The experiment on African catfish Clarias gariepinus fingerlings 3.55±0.01g average weight and 4.09±0.05cm average length, was to know the effect of feeding frequencies on the nutritive value on the carcass, the were fed with commercial feed (Coppens) of 58% crude protein level at 5% body weight, once (at 11:00 am), twice (9:00am and 4:00pm), thrice (9:00am, 1:00pm and 4:00pm), and four times (9:00am, 11:00am, 1:00pm and 4:00pm), daily to satiation for 14 weeks. The Mean Feed Consumption show that Treatment D had the highest total feed consumption of 54.10g, while the lowest feed consumption value of 43.20g was noted Treatment A which was the fish fed once per day. The mean proximate composition of the fish carcass show that crude protein was highest in Treatment D with 62.78±0.22, while Treatment A had the least with 54.72±0.02. Moisture content show that Treatment C had the highest with 11.86±0.14, while Treatment A had the least with 7.80±0.01. Ash content show that Treatment A had the highest with 6.90±0.22, while Treatment D had 1.08±0.63, which was the least. Crude lipid show that Treatment B had the highest with 11.78±0.17, while Treatment C had the least, with 9.24±0.33. The study suggests that body the composition of African catfish fingerlings is affected by the frequency of feeding.The results on feed utilization suggests that C. gariepinus fingerlings should be fed at four times per day for maximum growth and better survival
Evaluation of house fly (Musca domestica) maggot meal and termite (Macroterme...Premier Publishers
A 56-day feeding trial was conducted to investigate the effects of the combination of maggot and termite meal with Coppens commercial feed on the growth performance, food utilization and survival of the African catfish (C. gariepinus). A total of 150 fingerlings were stocked in fifteen glass aquaria, 10 each in triplicate. Fish in aquarium A1, A2 and A3 were fed maggot meal (100 %-MM), B1, B2 and B3 with termite meal (100 % - TM), C1, C2 and C3 with equal combination of maggot meal and Coppens feed (50:50), D1, D2, and D3 with equal combination of termite meal and Coppens feed (50:50) and E1, E2 and E3 with Coppens feed (100 %). Growth performance including length gain, weight gain, growth rate, specific growth rate and mean growth rate and food utilization indices including food consumed (g), food conversion ratio and food conversion ratio showed significant variation (P<0.05) in fish fed Coppens feed compared to other treatments. Physico-chemical parameters and ammonia (mg/l) were within the acceptable range for optimal growth of freshwater fishes. Although Coppens was the best result for growth and food utilization, the combination of maggot/termite meal with Coppens as supplementary feed will reduce the cost of fish production exposing farmers to a higher profit margin. In conclusion, feeding fish with only termite meal or maggot meal can lead to poor growth because these insect meals do not provide all the nutrients required for optimal growth in fish. However, maggot meal and termite meal should be used as only as a supplementary food in fish culture or as a replacement for highly priced fishmeal in fish feed formulation because they are rich in protein.
The Latin names of some aquatic species can have fascinatingly obscure meanings that provide anyone in need of a hobby with hours of joyful investigation and speculation. The channel catfish is, alas, not one of them: Ictalurus punctatus simply means ‘spotty catfish’, and the briefest glance at one will tell you why.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Practical Understanding of Aquafeed FormulationWorldFish
Presentation by panelists WorldFish’s Lead Fish Feeds and Nutrition Scientist, Dr. Rodrigue Yossa on 'Practical Understanding of Aquafeed Formulation' at a virtual webinar hosted by Aquaculture Africa Magazine on Thursday, 3 June 2021.
Evaluation of house fly (Musca domestica) maggot meal and termite (Macroterme...Premier Publishers
A 56-day feeding trial was conducted to investigate the effects of the combination of maggot and termite meal with Coppens commercial feed on the growth performance, food utilization and survival of the African catfish (C. gariepinus). A total of 150 fingerlings were stocked in fifteen glass aquaria, 10 each in triplicate. Fish in aquarium A1, A2 and A3 were fed maggot meal (100 %-MM), B1, B2 and B3 with termite meal (100 % - TM), C1, C2 and C3 with equal combination of maggot meal and Coppens feed (50:50), D1, D2, and D3 with equal combination of termite meal and Coppens feed (50:50) and E1, E2 and E3 with Coppens feed (100 %). Growth performance including length gain, weight gain, growth rate, specific growth rate and mean growth rate and food utilization indices including food consumed (g), food conversion ratio and food conversion ratio showed significant variation (P<0.05) in fish fed Coppens feed compared to other treatments. Physico-chemical parameters and ammonia (mg/l) were within the acceptable range for optimal growth of freshwater fishes. Although Coppens was the best result for growth and food utilization, the combination of maggot/termite meal with Coppens as supplementary feed will reduce the cost of fish production exposing farmers to a higher profit margin. In conclusion, feeding fish with only termite meal or maggot meal can lead to poor growth because these insect meals do not provide all the nutrients required for optimal growth in fish. However, maggot meal and termite meal should be used as only as a supplementary food in fish culture or as a replacement for highly priced fishmeal in fish feed formulation because they are rich in protein.
The Latin names of some aquatic species can have fascinatingly obscure meanings that provide anyone in need of a hobby with hours of joyful investigation and speculation. The channel catfish is, alas, not one of them: Ictalurus punctatus simply means ‘spotty catfish’, and the briefest glance at one will tell you why.
Research Inventy : International Journal of Engineering and Scienceresearchinventy
Research Inventy : International Journal of Engineering and Science is published by the group of young academic and industrial researchers with 12 Issues per year. It is an online as well as print version open access journal that provides rapid publication (monthly) of articles in all areas of the subject such as: civil, mechanical, chemical, electronic and computer engineering as well as production and information technology. The Journal welcomes the submission of manuscripts that meet the general criteria of significance and scientific excellence. Papers will be published by rapid process within 20 days after acceptance and peer review process takes only 7 days. All articles published in Research Inventy will be peer-reviewed.
Practical Understanding of Aquafeed FormulationWorldFish
Presentation by panelists WorldFish’s Lead Fish Feeds and Nutrition Scientist, Dr. Rodrigue Yossa on 'Practical Understanding of Aquafeed Formulation' at a virtual webinar hosted by Aquaculture Africa Magazine on Thursday, 3 June 2021.
Replacement of Fish Meal with Fish Head Meal in the Diet on the Growth and Fe...theijes
The availability of fish head meal (FHM) as a substitute for fish meal (FM) was evaluated in lobster (initial weight: ±0.02) diets containing three levels of FHM (from 0, 25% and 50%). After 90 days, weight gain averages were g for fish fed diet in which FM was partially substituted with 100, 75, and 50 % FHM, and feed conversion ratios were 3.20, 3.05, 4.01, 3.65 and 4.46, respectively. No differences were obtained in weight gain, FCR, FE and SR for all treatments. The lobster fed diet C (50% FM : 50% FHM) was highest in FE and followed by the shrimp fed diet B (75% FM),diet A (100% FM), respectively. SR was highest in the lobster fed diet C and the lowest was found in the lobster fed diet A. This study concluded that FHM could replace FM up to 50% in the diet without compromising growth and survival rate of rock lobster juvenile.
Growth Response of Heterotis Niloticus (Cuvier 1829) Fingerlings to Artificia...AI Publications
The study amied at determining the growth response and survival rate of Heterotis niloticus on artificial diet and chicken manure reared in earthen pond system. The experiment was designed as 2 treatment x 12 weeks factorial replicated twice. The fingerlings of H. niloticus were collected from the wild, acclimatised and stocked in an earthen ponds of (200m2) at 50 fish/m2/pond and fed with compounded diet of 30% crude protein and chicken manure for twelve weeks. The body weights were determined bi-weekly using electronic weighing balance. Final mean weight of 32.89±9.10g fish fed with chicken manure and 22.19±2.8g were obtained. Fish fed with chicken manure had a better growth rate. The water quality variables were similar except Dissolved oxygen and Turbididty that shows a sharp difference in culture ponds. The results of the present experiment showed that Heterotis niloticus fingerlings have a different growth performance, under earthen pond system with fish fed with chicken manure having better performance. Therefore, the culture of H. niloticus with chicken manure is recommended for better growth.
Detritivorous marine polychaete worms are farmed commercially as live bait for sport angling and most recently as an ingredient in formulated aquaculture feeds.
Effect of Intensifying Stocking Densities and Proper Feed Management Techniqu...IJERA Editor
Clarias gariepinus was cultured in earthen ponds at three very high stocking densities- 27, 45, and 90 fingerlings/m2 in replicates and fed with both commercial (CF) and formulated feed (FF). After eight weeks, fish fed CF had the highest mean daily weight gain of 0.591±0.004g/day; 0.491±0.004g/day; 0.576±0.001g/day respectively for 27, 45 and 90 fingerlings/m2 with a corresponding MDWG of 0.576±0.001; 0.608±0.005 and 0.607±0.012g/day with FF. The weight and Condition Factor (g)(C.F.) for CF fed were 32.71g (0.93); 31.66g (0.68) and 32.0g (0.85) respectively for 27, 45 and 90 fingerlings/m2 , while FF correspondingly yielded 34.43g (0.80); 35.33g (0.47) and 35.33g (0.90). The survival rate was highest with CF at 27 fingerlings/m2 and lowest with FF at 90 fingerlings/m2 . Consequently, a stocking density of 45 fingerlings/m2 is recommended for earthen pond culture with either CF or FF. Feeding specificity, timeliness in feeding cum high quality feed enhanced fish growth and development.
ADDITION OF ORGANIC WASTE ON NILE TILAPIA (OREOCHROMIS NILOTICUS) COMMERCIAL ...IAEME Publication
Nile tilapia (Oreochromis niloticus) is an important commodity in the aquaculture
of freshwater fish in Indonesia, apart from its distinctive taste but also a good protein
content for fulfilling community nutrition. However, the high demand for nile tilapia is
not enough just to rely on fishermen, so it takes effort to increase the growth rate of it.
This study aimed to determine the effect of shrimp waste and coconut pulp addition to
enhance protein retention, energy retention and growth rate of nile tilapia
(Oreochromis niloticus). This was an experimental study by means of completely
randomized design method. There were five treatments and four replications in each
treatment. The treatment used was the addition of shrimp waste and coconut pulp on
commercial feed. Two hundred nile tilapia were used in this study. The study was
conducted for 30 days by feeding three times a day. The research data were analyzed
using ANOVA and Duncan. Based on the results of the study, it can be seen that the
addition of 30% shrimp waste and coconut pulp flour to nile tilapia commercial feed
(Oreochromis niloticus) significantly affected the energy retention value of 12,050%,
protein retention of 21 245% and growth rate of 1.471%. Adding organic waste to
commercial fish feed can boost the growth rate of nile tilapia.
The presentation is based on 30 years of experience on small-scale fisheries and will give an outline on how Professor Kolding’s visions for aligning and combining three major objectives of the Sustainable Development Goals (SDGs): Better human nutrition and health, more food, and least ecological impacts from sustainably harvesting our aquatic ecosystems. Professor Kolding will also briefly outline a new multidisciplinary project in Africa, which will pursue these three objectives by focusing on small fish.
Powdered seaweed or seaweed flour is already used as an ingredient in terrestrial and aquatic feeds. The seaweed is usually a single species and publications over the years have demonstrated a range of benefits, for instance improved resistance to viral and bacterial pathogens.
The study was carried out to determine the effect of fungi contaminated feed on the growth and survival of catfish, Clarias gariepinus juveniles. This research was carried out for a period of twelve weeks. Forty catfish juveniles were stocked at a rate of twenty juveniles per plastic tank. Catfish juveniles in one tank were fed with moldy feed and the control was served with non -moldy feed and was observed for twelve weeks to determine and compare their growth and survival. Catfish juveniles fed with moldy feed had the highest mortality as well as slower growth as compared to the control fed with non-moldy feed. The survival rate of juveniles stocked was 55% and mortality rate was 45% and majority of mortality was from juveniles fed with moldy feed and majority of the survival rate was from juveniles fed with non-moldy feed. Some water quality parameters such as temperature, dissolved oxygen and pH were also taken and no significant difference was observed. Moldy feed or feedstuff should not be used as this can cause great mortality and therefore loss to fish farmers.
Comparison of growth feed conversion and body composition of juvenile hybrid...ABDUL MALIK
The objective of this study was to compare growth, feed consumption and body composition of
hybrid red tilapia (Oreochromis niloticus × O. mossambicus) and Nile tilapia (O. niloticus) reared in
concrete tanks for 60 days. The juvenile of Nile tilapia, T1 (mean weight 2.08±0.2 g) and hybrid red
tilapia, T2 (mean weight 2.07±0.16 g) were stocked in concrete tanks (15 × 6 × 3 ft). They were fed
with four isoenergetic (20.3 kJ g
) diets containing 35% protein at a daily ration of 5% body weight
with two replications. The highest weight gain was found in T2 (44.2±0.1g), while the lowest one
was recorded in T1 (34.3±0.2 g). Specific growth rate (SGR) and feed conversion ratio (FCR) were
-1
not significantly different among treatments (P<0.01).><0.01).><0.05).><0.05), though little variations were noted in the values of individual
fatty acids. Based on the biological and chemical data, it is suggested that hybrid red tilapia, T2 (O.
niloticus × O. mossambicus) has potential for aquaculture in Pakistan.
Cavine Onyango Oguta. “The Mass Culture of the Freshwater Rotifers Brachionus Rubens Ehrenberg 1838 Using Different Algal Species Diets” United International Journal for Research & Technology (UIJRT) 1.4 (2019): 10-24.
Fish as a source of animal protein has played an important role in the nutritional budgeting of many nations. Fish production is becoming a very important source of valuable protein food. Fishmeal is the major protein source in aquaculture feeds.
Replacement of Fish Meal with Fish Head Meal in the Diet on the Growth and Fe...theijes
The availability of fish head meal (FHM) as a substitute for fish meal (FM) was evaluated in lobster (initial weight: ±0.02) diets containing three levels of FHM (from 0, 25% and 50%). After 90 days, weight gain averages were g for fish fed diet in which FM was partially substituted with 100, 75, and 50 % FHM, and feed conversion ratios were 3.20, 3.05, 4.01, 3.65 and 4.46, respectively. No differences were obtained in weight gain, FCR, FE and SR for all treatments. The lobster fed diet C (50% FM : 50% FHM) was highest in FE and followed by the shrimp fed diet B (75% FM),diet A (100% FM), respectively. SR was highest in the lobster fed diet C and the lowest was found in the lobster fed diet A. This study concluded that FHM could replace FM up to 50% in the diet without compromising growth and survival rate of rock lobster juvenile.
Growth Response of Heterotis Niloticus (Cuvier 1829) Fingerlings to Artificia...AI Publications
The study amied at determining the growth response and survival rate of Heterotis niloticus on artificial diet and chicken manure reared in earthen pond system. The experiment was designed as 2 treatment x 12 weeks factorial replicated twice. The fingerlings of H. niloticus were collected from the wild, acclimatised and stocked in an earthen ponds of (200m2) at 50 fish/m2/pond and fed with compounded diet of 30% crude protein and chicken manure for twelve weeks. The body weights were determined bi-weekly using electronic weighing balance. Final mean weight of 32.89±9.10g fish fed with chicken manure and 22.19±2.8g were obtained. Fish fed with chicken manure had a better growth rate. The water quality variables were similar except Dissolved oxygen and Turbididty that shows a sharp difference in culture ponds. The results of the present experiment showed that Heterotis niloticus fingerlings have a different growth performance, under earthen pond system with fish fed with chicken manure having better performance. Therefore, the culture of H. niloticus with chicken manure is recommended for better growth.
Detritivorous marine polychaete worms are farmed commercially as live bait for sport angling and most recently as an ingredient in formulated aquaculture feeds.
Effect of Intensifying Stocking Densities and Proper Feed Management Techniqu...IJERA Editor
Clarias gariepinus was cultured in earthen ponds at three very high stocking densities- 27, 45, and 90 fingerlings/m2 in replicates and fed with both commercial (CF) and formulated feed (FF). After eight weeks, fish fed CF had the highest mean daily weight gain of 0.591±0.004g/day; 0.491±0.004g/day; 0.576±0.001g/day respectively for 27, 45 and 90 fingerlings/m2 with a corresponding MDWG of 0.576±0.001; 0.608±0.005 and 0.607±0.012g/day with FF. The weight and Condition Factor (g)(C.F.) for CF fed were 32.71g (0.93); 31.66g (0.68) and 32.0g (0.85) respectively for 27, 45 and 90 fingerlings/m2 , while FF correspondingly yielded 34.43g (0.80); 35.33g (0.47) and 35.33g (0.90). The survival rate was highest with CF at 27 fingerlings/m2 and lowest with FF at 90 fingerlings/m2 . Consequently, a stocking density of 45 fingerlings/m2 is recommended for earthen pond culture with either CF or FF. Feeding specificity, timeliness in feeding cum high quality feed enhanced fish growth and development.
ADDITION OF ORGANIC WASTE ON NILE TILAPIA (OREOCHROMIS NILOTICUS) COMMERCIAL ...IAEME Publication
Nile tilapia (Oreochromis niloticus) is an important commodity in the aquaculture
of freshwater fish in Indonesia, apart from its distinctive taste but also a good protein
content for fulfilling community nutrition. However, the high demand for nile tilapia is
not enough just to rely on fishermen, so it takes effort to increase the growth rate of it.
This study aimed to determine the effect of shrimp waste and coconut pulp addition to
enhance protein retention, energy retention and growth rate of nile tilapia
(Oreochromis niloticus). This was an experimental study by means of completely
randomized design method. There were five treatments and four replications in each
treatment. The treatment used was the addition of shrimp waste and coconut pulp on
commercial feed. Two hundred nile tilapia were used in this study. The study was
conducted for 30 days by feeding three times a day. The research data were analyzed
using ANOVA and Duncan. Based on the results of the study, it can be seen that the
addition of 30% shrimp waste and coconut pulp flour to nile tilapia commercial feed
(Oreochromis niloticus) significantly affected the energy retention value of 12,050%,
protein retention of 21 245% and growth rate of 1.471%. Adding organic waste to
commercial fish feed can boost the growth rate of nile tilapia.
The presentation is based on 30 years of experience on small-scale fisheries and will give an outline on how Professor Kolding’s visions for aligning and combining three major objectives of the Sustainable Development Goals (SDGs): Better human nutrition and health, more food, and least ecological impacts from sustainably harvesting our aquatic ecosystems. Professor Kolding will also briefly outline a new multidisciplinary project in Africa, which will pursue these three objectives by focusing on small fish.
Powdered seaweed or seaweed flour is already used as an ingredient in terrestrial and aquatic feeds. The seaweed is usually a single species and publications over the years have demonstrated a range of benefits, for instance improved resistance to viral and bacterial pathogens.
The study was carried out to determine the effect of fungi contaminated feed on the growth and survival of catfish, Clarias gariepinus juveniles. This research was carried out for a period of twelve weeks. Forty catfish juveniles were stocked at a rate of twenty juveniles per plastic tank. Catfish juveniles in one tank were fed with moldy feed and the control was served with non -moldy feed and was observed for twelve weeks to determine and compare their growth and survival. Catfish juveniles fed with moldy feed had the highest mortality as well as slower growth as compared to the control fed with non-moldy feed. The survival rate of juveniles stocked was 55% and mortality rate was 45% and majority of mortality was from juveniles fed with moldy feed and majority of the survival rate was from juveniles fed with non-moldy feed. Some water quality parameters such as temperature, dissolved oxygen and pH were also taken and no significant difference was observed. Moldy feed or feedstuff should not be used as this can cause great mortality and therefore loss to fish farmers.
Comparison of growth feed conversion and body composition of juvenile hybrid...ABDUL MALIK
The objective of this study was to compare growth, feed consumption and body composition of
hybrid red tilapia (Oreochromis niloticus × O. mossambicus) and Nile tilapia (O. niloticus) reared in
concrete tanks for 60 days. The juvenile of Nile tilapia, T1 (mean weight 2.08±0.2 g) and hybrid red
tilapia, T2 (mean weight 2.07±0.16 g) were stocked in concrete tanks (15 × 6 × 3 ft). They were fed
with four isoenergetic (20.3 kJ g
) diets containing 35% protein at a daily ration of 5% body weight
with two replications. The highest weight gain was found in T2 (44.2±0.1g), while the lowest one
was recorded in T1 (34.3±0.2 g). Specific growth rate (SGR) and feed conversion ratio (FCR) were
-1
not significantly different among treatments (P<0.01).><0.01).><0.05).><0.05), though little variations were noted in the values of individual
fatty acids. Based on the biological and chemical data, it is suggested that hybrid red tilapia, T2 (O.
niloticus × O. mossambicus) has potential for aquaculture in Pakistan.
Cavine Onyango Oguta. “The Mass Culture of the Freshwater Rotifers Brachionus Rubens Ehrenberg 1838 Using Different Algal Species Diets” United International Journal for Research & Technology (UIJRT) 1.4 (2019): 10-24.
Fish as a source of animal protein has played an important role in the nutritional budgeting of many nations. Fish production is becoming a very important source of valuable protein food. Fishmeal is the major protein source in aquaculture feeds.
Fish culture is classified based on the number of fish species as monoculture and polyculture. This is the culture of single species of fish in a pond or tank. The culture of trout, tilapia, catfish , carps are typical examples of monoculture.
COMPARATIVE STUDIES ON NUTRITIONAL VALUE OF NORMAL AND TUMOR TISSUE, SARDINE...IJSIT Editor
Fish are at present in high demand in food markets, they are widely consumed in many parts of the
world because they posses high protein content, saturated fat and also contain omega fatty acids known to
support good health. The present study deals with biochemical composition of common fish,Sardinella
longiceps. The proximate composition of protein, carbohydrate, lipid, amino acids and fatty acids were
studied. The results of proximate composition in S. longiceps showed the percentage of protein was high in
the normal and tumor infected fish tissue (29.15 &18.93%), followed by the carbohydrate (5.81 & 2.42 %)
and lipid (15.61 & 9.28 %). The percentage compositions of essential and non-essential amino acids are
presented in normal tissue and tumor infected tissue were found to be as 46.09 % & 41.47 % and 37.23% &
40.63%. In the analysis, the fatty acid profile by gas chromatography revealed the presence of higher amount
of PUFA (Linolenic acid 32.74 %) in normal tissue. The details of the vitamins detected in S. longicepstissue.
Among them, vitamin A was found in higher levels (91.16 mg/gm) at normal tissue. In the present study,
totally 5 macro minerals and 2 trace minerals were reported. The S. longiceps normal and infected tissue
contributed maximum sodium (289.6 mg/gm) and Potassium (166.5 mg/gm) of minerals. The result shows
that marine fish (S. longiceps) tissue is a valuable food recipe for human consumption, due to its high quality
protein and well-balanced amino acids fatty acids and vitamins and minerals.
We investigated the effects of fish protein hydrolysate (FPH) on zootechnical performance and immune response of the Asian Seabass Lates calcarifer Bloch. Experimental fish were fed with 3 diets: a local commercial diet (control), coated or not, with 2 and 3% FPH (w/w). Twelve thousand Asian Seabass juveniles (5.88±0.56 g) were divided into three groups and two replicates reared in nursery tanks (2000 L). The remaining fish were then used for grow-out experiment in floating net cages (1m x 1 m x 3 m). Zootechnical performances were assessed at both stages with following indicators: total weight gain (TWG), % relative weight gain (% RWG), % specific growth rate (% SGR), final weight (g) and final length (cm). At the end of each trial period, fish immune status was assessed through blood sampling and the measurement of Neutrophile (%), Monocyte (%), Lymphocyte (%), Macrophage (105 cell/mL), Leukocyte (103 cell/mL) and Phagocytes activity (%). At the end of the nursery trial, an immersion bacterial challenge with Vibrio parahaemolyticus (105 cells mL-1) was implemented. The results showed that dietary FPH supplementation significantly influenced the growth and immune status of Asian Seabass when compared to the control group. Fish fed FPH supplemented diet yielded higher growth rates and survival rates than non supplemented group. Fish phagocytic activity and resistance to a bacterial challenge were also improved by dietary FPH supplementation. These results may be related to the significant changes observed in fish leukocyte profiles, when fed FPH supplemented diets. Altogether, these results show the positive contribution of FPH to the sustainability of Asian seabass farming.
The development of aquafeed production is followed by the growing interest in raw materials which are to be interesting, attractive and valuable, not only in terms of their properties. There is no doubt that algae are one of them. Feeds with the addition of algae are perceived as premium products. This can result from the fact that algae evoke certain associations with healthy food for humans. Animal food with algae must then trigger the same positive associations. Moreover, specially processed algae or feeds with the addition of algae offered by the producers allowed for keeping popular algae-eating freshwater and marine fish.
ABSTRACT- Order siluriformes, Bagridae family of four number of catfish species provides information on the diets of
Mystus bleekeri, Mystus cavasius, Mystus tengara, Mystus vittatus in Lower Manair reservoir. The total of 1021 fish
species examined and their stomach content was analyzed. The frequency of occurrence and numerical methods were
employed in this study. In the numerical analysis, crustaceans and insect parts (85.91%) constituted the most important
diet of Mystus bleekeri followed by fish remains (78.40%), plant materials (69.01%), algae/ protozoan (64.79%), molluscs
(63.38%), detritus (56.81%) and sand grains (33.80%). The number of food items were enumerated for the crustaceans
and insect parts in Mystus bleekeri have been contained the maximum percentage (34.84%) of the content under
frequency of occurrence method followed by algae and protozoan with 20.76%, Molluscs with 18.37%, plant materials
with 15.60% and sand grains with 10.44%. The result of the analysis showed that Mystus cavasius, Mystus tengara,
Mystus vittatus fed on similar food items. These were mainly crustaceans, molluscans, fish remains and macrophytes.
Other food items include algae, detritus, sand grains. These four species are omnivorous and occupy the same ecological
niche.
Key-words- Cat fish, Food and feeding, Frequency, Numerical method
Soy protein concentrate: a value- added soy product for aquafeedsCJBio3
Aquaculture is the world's fastest-growing industry in the food production sector. It is projected that aquaculture will play a major role in the global food supply by doubling and intensifying its production by 2050. Fish meal is considered as “the gold standard” ingredients for aqua feed, but its unstable price and availability might decelerate the sector expansion and hurt famer’s profits. Although plant-based ingredients can be fish meal alternatives, their high content of antinutritional factors might cause some negative effects on fish growth. However, soy protein concentrate, which provides a great source of protein with less antinutrients thanks to the aqueous alcohol extraction in its refining process, are employing widely for better cost management with stable feed quality.
The article today will provide some updates about SPC using in feed production and the benefits which it brings on fish growth performance.
Evaluation of the Biochemical Composition of Four Marine Algae and Its Nutrit...IOSR Journals
Microalgae are utilized in aquaculture as a live feed for the crustaceans, ablone, zooplanktons, etc. The present study was aimed to examine the nutritional status of Artemia sp. nauplii enriched with four different algal sources namely Chaetoceros calcitrans, Skeletonema coastaum, Duniella salina & D. bardawil and also the amount of beta-carotene assimilated when enriched with the two green algae. Artemia sp. nauplii enriched with D. salina showed high amounts of protein and carbohydrate, whereas Artemia sp. fed with Chaetoceros calcitrans showed high amounts of lipid. The protein profile of Artemia sp. enriched with different algal sources did not show prominent differences in the polypeptide bands. However, high amount of beta-carotene was assimilated in Artemia sp. nauplii when enriched with D. salina. Hence this study showed that the microalgae D. salina can be used as a potential feed to improve the nutritional status of Artemia sp. nauplii.
Evaluation of the Nutritional composition (Proximate, Mineral and Amino acids...Premier Publishers
Nutrient constituents of Tilapia zillii and Sarotherodon galilaeus vis-à-vis proximate, mineral and amino acid contents were evaluated. A total of One hundred fish samples, comprising of 50 T. zillii and 50 S. galilaeus, with weights ranging from 500-800g procured from Agbalata market, Badagry, Lagos. The fish species were subjected to proximate, mineral and amino acid analysis using the Association of Official Analytical Chemists (AOAC), Atomic Absorption Spectrophotometer (AAS), and Gas chromatography (GC) methods. Fat contents of 5.40±0.02 (T. zillii) and 3.39±0.03 (S. galilaeus) were detected in both species. Highest crude protein (CP) values of 49.14±0.06 and 47.74±0.19 and ash with the lowest values of 4.20±0.02 and 5.75±0.04 in T. zillii and S. galilaeus were observed. Mean body mineral constituents differed significantly (P<0.05) between the two species except for ash. Bioaccumulation of Cd, Pb and Ni were found to be very low in both species. Among the 18 amino acids detected; glycine (3.83±0.14 and 4.45±0.06), alanine (5.58±0.35 and 5.76±0.10), threonine (3.52±0.29 and 4.18±0.20), histidine (4.93±0.65 and 2.79±0.20) and tryptophan (1.49±0.01 and 1.63±0.04) in T. zillii and S. galilaeus were discovered to be significantly different at p<0.05. Tryptophan and cysteine were the lowest at (1.49±0.01 and 1.63±0.04) and (1.40±0.05 and 1.30±0.05), for T. zillii and S. galilaeus respectively. Both fish species contains all the essential amino acids in appreciable concentrations. Due to the abundant nutrients found in the two species examined, they are recommended for human consumption.
Achieving factual sustainability in fish farming needs the addition of most of the fish meal exploited as feed stuffs. The current experiment described two feeding trials, that resulted in the complete replacement of fish meal in the fingerling of Tilapia mossambicus. The initial trial was accompanied with three stages of fish meal replacement (50, 75 and 100% of dietary protein) viz., one level of soy protein and two levels of Lactat ® Probiotic (0 (or) 0.3% of the diet). Since probiotic has been reported to promote gut health, it was incorporated inorder to examine the growth enhancement and whether it would ease high levels of fish meal replacement in T. mossambicus. Lipids were provided by Cod liver oil. The better weight gain was observed in the treatments 50/50+ of fish meal replacement and 0/100+ of fish meal replacement. The optimum Specific Growth Rate, Food Conversion Ratio and Survival were also observed in 50/50+ fish meal replacement and 0/100+ fish meal replacement. The higher serum Acetyl Choline, Leucocytes, and Erythrocyte were observed in 50/50+ and 0/100 + than the other diets. The Lysozyme activity was higher in 0/100+ and 50/50+ than the other diets.
In the Second feeding trial, fish meal was replaced by various carbohydrate sources on the growth performance and hepatic carbohydrate metabolic enzyme activities of the fingerlings of T. mossambicus. Five experimental diets were formulated to contain glucose, sucrose, maltose, dextrin, corn starch and control were maintained separately. The results indicated that the better weight gain, SGR, FCR and survival were also better in starch, dextrin and sucrose diet fed fish. There were significant differences in the total plasma, glucose and triglyceride concentration in fish fed with different carbohydrate sources. Plasma total protein, red blood cell, leucocytes and hemoglobin were significantly affected by various carbohydrate sources. The activities of glucose 6-Phosphate dehydrogenase, (G6PD), 6- Phospho fructokinase (PFK) and fructose 1, 6 – bisphosphatase (FBase) were significantly affected by these carbohydrate sources. While this two feeding trail indicated that the 50/50+ and 0/100+ of soy flour replacement with fish meal showed the optimum growth performance and in carbohydrate sources the corn starch, dextrose, and sucrose showed the better growth for tilapia fingerlings.
Influence of feeding administration of brood-stock on breeding performance of...AbdullaAlAsif1
The aim of the experiment was to determine the effects of three types of formulated feed containing varying levels of protein, lipid on breeding performance of common carp (Cyprinus carpio). C. carpio was reared for 120 days under three dietary treatments (T1 to T3) with varying crude protein levels and crude lipid levels. Experimental diets T1, T2 and T3 were formulated from locally available feed ingredients having crude protein percentage of 23.56 ± 0.23, 28.60 ± 0.10 and 18.04 ± 0.32; crude lipid percentage of 9.50 ± 0.22, 11.06 ± 0.38 and 8.34 ± 0.19 respectively. Effect of the three diets was studied in terms of gonadosomatic index (GSI), fecundity, fertilization rate, hatching rate and deformity of fry. Fishes reared under Treatment 2 showed the highest gonadosomatic index (32.08 ± 7.24%), fecundity (355963.33 ± 77142), fertilization rate (84.00 ± 6.89%), hatching rate (87.33 ± 12.45) and lowest rate of larval deformity (11.56 ± 3.56%). Brood stock management of Treatment 2 showed significantly better results (P<0.05) in respect of gonadosomatic index, fecundity, fertilization rate, hatching rate and larval deformity among three selected hatcheries. Hence, it can be concluded that 28.60 ± 0.10% protein and 11.06 ± 0.38% lipid is adequate for better breeding performance of common carp (Cyprinus carpio).
Effect of Different Weed Control Practices On Proximate Composition, Nutrient...IOSRJAVS
A field experiment was conducted during 2004 and 2005 cropping seasons to determine effect of different weed control practices on proximate composition, nutrient concentration and nutrient uptake of maize (Zea maysL.) at the Teaching and Research Farm of Ambrose Alli University, Ekpoma, Nigeria. Seven treatments were used for the experiment, viz no weeding (control), Primextra (3.0kg a.i./ha), mulching (wood shavings), one- hoe weeding at 3 weeks after planting (WAP), two hoe- weedings at 3 and 7 WAP, cover cropping with melon minus hoe-weeding, cover-cropping with melon plus one hoe-weeding at 3WAP. The seven treatments were laid out in randomized complete block design with four replicates. Results showed that mulched plot with wood shavings had the lowest weed density and highest proximate composition, grain nutrient concentration, ear leaf concentration and nutrient uptake followed by Primextra treated plot .The study recommends that small holder farmers to adopt mulching technique with wood shaving to improve the nutritional quality of maize grain since it does not involve any technical rigor besides signifying a non-chemical weed control.
Physiological Quality of Bean Seeds Related To Azotobacter spp. InoculationIOSRJAVS
Research aimed at improving the quality of crops. The results obtained with seed coating were very influential with regard to fertilization and disease resistance. Nitrogen fertilization increases costs in agricultural production and the loss of fertile lands, altering the natural conditions and has negative consequences for the microorganisms (MO), which regulate the balance between quality of crops and soils. The biological nitrogen fixation (BNF) consists on MO work which provide nitrogen in soil and secrete substances that promote plant growth, these can be made by inoculation of seeds. The germination rate, emergency and vigor are an indicator that determines the productivity and physiological quality of a plant variety. The germination rate, number of emerged seeds per pot in favorable field conditions and vigor by accelerated aging test were evaluated. The seed treatments were: the seed inoculation with Azotobacter spp., Immersion in nutrient broth without bacteria, sterilization and zero handling. The experiment has shown that inoculation of common bean seeds with Azotobacter spp. does not adversely affect germination, emergency or vigor and stimulate the development of abnormal seedlings.
Prevalence and Antibiotic sensitivity pattern of Salmonella isolates from mil...IOSRJAVS
The study was conducted to determine the presence of Salmonella in retail milk products and water reservoirs in Maiduguri, Nigeria. A total of 150 samples were collected using convenient sampling technique. One hundred samples; fifty each of full cream milk or Kindirmo (n=50) and Skimmed milk or Nono (n=50) were collected from Bulumkutu and Monday market retail sellers. Furthermore, of the fifty samples obtained from the two different locations, twenty five samples each of kindirmo and nono were collected. The samples were aseptically kept in sterile plastic bags. Additionally, fifty water samples were collected from reservoirs within the University campus. They were processed according to standard bacteriological protocols followed by Gram’s staining and biochemical test; Triple sugar iron test, citrate and urease. The Salmonella isolates were further subjected to ten different antibiotics to determine their sensitivity. The overall prevalence of Salmonella in milk samples was found to be 10.00%, while the total prevalence of Salmonella from water sample was 40.00%. Of the fifteen isolates tested, resistance to Amoxicillin, Ceftriaxone and Erythromycin was 100.00%, Gentamicin had 80.00% and Cotrimoxazole was 53.33%, whereas Gentamycin, Ceftriaxone and Amoxicillin displayed 100.00% sensitivity. Moderate sensitivity of 53.33% to Streptomycin and Pefloxacin, 46.67% to Ciprofloxacin and 86.67% sensitivity to Ofloxacin was found in this study. Antibiotic resistance is associated with frequent usage both in livestock and humans as they are commonly available. Adequate sanitary measures should be ensured in milk processing and use of water reservoirs. Antibiotics should be used based on their antibiogram pattern. Prudent use of antibiotics is essential and its continuous use as growth promoters should be discouraged, as this may result to failure in the treatment of Salmonella-associated diseases due to resistance. Disease surveillance programmes should be established as a means for curtailing salmonellosis.
Molecular Detection and Therapeutic Management of Feline MycoplasmosisIOSRJAVS
Mycoplasma haemofelis and Candidatus Mycoplasma haemominutum (formerly known as Haemobartonellafelis) are the causes of hemotropic mycoplasmosis in cats. The parasites attach to the surface of the red blood cell, and have the potential to cause severe alterations of the cell’s shape, resulting in anaemia. A three-year-old tom cat was presented in University Veterinary Hospital with symptoms of lethargy, reduced appetite and fever for past 3 days. Clinical examination revealed increased temperature(103º – 105º F), blanched mucous membranes and lymphadenopathy. Upon peripheral blood smear examination small coccoid organisms could be noticed in the periphery of the RBCs. Hematobiochemical examination revealed anaemia, thrombocytopaenia and decreased haematocrit values. The blood samples were subjected to DNA extraction and followed by Polymerase Chain Reaction which confirmed mycoplasmosis due to Mycoplasma haemofelis. The animal was treated with intravenous administration of oxytetracycline@ 10mg/kg BW for five days along with prednisolone and vitamin supplements. Uneventful clinical recovery was noticed 7 days post therapy.
Inspection of the imported food products and internally produced food product...IOSRJAVS
This research had done on Export and Internal products which use by Afghan people. Tests on eggs showed that the internal eggs have better condition because of good weight, shell size, Albumin and yolk, and also there is no report of Salmonella. Tests on milk showed that the internal milk is good at high percentage of fat, Protein, Carbohydrates but there is always adulteration in these milks like adding water and starch. The research on water showed that there are hardness, No3, No2, P, some kinds of Bacteria but no Arsenic in tap, well and mineral water.In meat test we had found that, both import frozen meat and daily slaughter had the same condition of total bacteria and Coliforms but the percentage was normal, with no Salmonella. Results showed that import apple had high Bricks in refract meter than Herati apple.Tests of sausage and tuna products of our country and the external samples had no coliforms but high percentage of total bacteria.
Agro-Economic Benefits of Weed Biomass and Crop Residue in Maize Production S...IOSRJAVS
The climatic conditions of coastal Kenya favour rapid weed growth, leading to the accumulation of large biomass of weeds between cropping seasons. Smallholder farmers in the region usually slash and remove the weed biomass and crop residue from their farms during land preparation in order to facilitate easy planting. The impact of such practice on the production of maize has not been assessed. The aim of this study was to determine the effect of the farmers’ practice on the performance of maize and fertilizer requirement. Three methods of managing weed biomass and crop residue (removal from field, incorporation into soil, or use as surface mulch) and five fertilizer rates (60 kg N ha-1 , 20 kg P ha-1 , 30 kg N ha-1 , 10 kg P ha-1 , and no fertilizer application) were evaluated. Removal of weed biomass and crop residue from the field led to 20-26% loss in grain yield and reduced the returns to labour by 41-51%.There was no response to applied P where weed biomass and crop residue had been incorporated into soil. Efforts should therefore be made to educate farmers on the advantages of retaining weed biomass and crop residue on their farms as they prepare land for subsequent crops.
Mutagenic Action of Sodium Azide on Germination and Emergence in Landraces of...IOSRJAVS
Phaseolus vulgaris (Common beans) landraces are one of the most cultivated legumes for human consumption on the montaneclimate of the Jos Plateau and is renowned for the production of reasonable quantities of the beans in Africa.Common beans is rich in fiber, micronutrients, minerals and has strong medicinal value. Despite its potential for improving nutrition and poverty reduction, it is highly under-utilized and research efforts to improve the genotypes of the plant found in this area for better productivity are few. A study was thus carried out to access the germination and emergence responses of three landraces of Phaseolus vulgaris (pinto, red kidney and navy) after treatment with sodium azide. Four doses of sodium azide were applied in concentrations of 0.1M, 0.04M, 0.03M and 0.02M for each landrace for both germination and emergence experiments. The results showed that at doses 0.02M and 0.03M, the pinto indicated significantly (p<0.05) higher mean germination which surpassed the control. All sodium azide doses in the red kidney and pinto had reduced mean germination. Sodium azide reduced the mean emergence of pinto, red kidney and navy at all the doses of sodium azide. The lethality of sodium azide was highest in navy and lowest in pinto. The decrease in germination and emergence was not dose related especially in red kidney and navy. The best response to the mutagen was observed in pinto with higher germination and the least percentage lethality. Sodium azide effectiveness and efficiency were strongest at the 0.1M dose of the mutagen.
The Use of in vitro Gas Production Technique as an Index of the Nutritive Val...IOSRJAVS
: The in vitro gas production technique was used to predict rumen fermentable organic matter, gas production kinetics, organic matter digestibility as well as metabolizable energy were evaluated in green shoot, leaves, fruits flesh and seed cakes of Ziziphus spina-christi tree. A gas production was measured by incubating samples in buffered rumen fluid from cannulated steer for 72 h. Total gas production was recorded at 0,3, 6, 9, 12, 24, 48, and 72 h of incubation periods and kinetics of gas production was described. The chemical analysis of these Ziziphus spina-christi parts, showed that, Leaves contained high protein (14.77±0.23g/kg) and green shoot less protein (8.03±0.15g/kg),however, high ash content was observed in green shoot (10.03±0.07g/kg) compare to other parts. seed cakes has the highest crude fibre content in comparison to other parts (32.46±0.01),while fruits flesh contained the highest ether extract(72.39±0.03).The maximum gas volume was highest for fruits flesh followed by seed cakes, green shoot and leaves after 24hr of incubation. In this study flesh had a significantly higher (P<0.05) gas production from rapid soluble fraction (a) than the other parts, while Ziziphus spina-christi leaves showed the highest gas production from slowly degradable fraction (b) .Organic matter digestibility range was (51.90– 43.79%) and Metabolisable energy was found to be (9.16– 6.74MJ/kgDM) in the flesh and green shoot, respectively. It was concluded that, green shoots, leaves, fruit flesh and seed cake of Ziziphus spina-christi have the potential to be used as protein, energy and mineral supplements for ruminants especially during the dry season
Epithelial reticular Cells of Egyptian Water buffalo (Bosbubalis)IOSRJAVS
Thymus obtained from10 clinically healthy Egyptian water male buffalo (Bosbubalis). Their ages ranged between 2to 3 years old. The thymus of Egyptian water buffalo was divided by septa into many lobules; each lobule had outer, cortex and inner medulla. The epithelial reticular cells were classified according to their staining affinity, morphology and position into 4 types, three were found within the cortex and one in the medulla. In cortex epithelia reticular cells type I (ER 1) had elongated nucleus of irregular or triangular shape with marginal heterochromatin clumps along the nuclear membrane. Epithelial reticular cells type II(ER II) were irregular in shape with pale stained cytoplasm and the nuclei were large and spherical having euchromatin. Epithial reticular cells type III(ERIII) were characterized by large nucleus of irregular shape having marginal heterochromatin .In medulla epithelial reticular (ER) cells of type IV, they were the largest epithelial cells forming the unique elements of the thymic medulla (Hassall's corpuscles)). Cytoplasm was occupied by many small vacuoles ,very large vacuole appeared in the cytoplasm pushed the nucleus into one side.
The Development Strategy for Community Empowerment in the Framework of Fire P...IOSRJAVS
Land and forest fire disasters occur every year. Such conditions lead to disaster smog that many negative impact on society. Limited access to information community, especially around the area of Coconut Plantation potentially cause many problems, such as reduced household income caused by smog, the highaffected community respiratory tract infections as well as conflict disharmony social relationships that exist in society. Mistakes in communicating an information, could lead to uncertainty which aggravated the situation. In this situation, communication and community empowerment approach is urgently needed, taking into account the circumstances and social change. This study aims to examine how socioeconomic conditions of communities around oil palm plantations and the extent of the role of community institutions in the activities of prevention and suppression of fires and haze, and determine the communication strategy of community empowerment in the prevention and suppression of fires and smoke haze oil palm plantations in South Kalimantan, Indonesia. the results showed that the alternative chosen strategy is as follows: (a) Improving socialization, campaigns and the effectiveness of inter-institutional communication for the prevention of forest fires; optimization of the institutional role of Fire Response Group at the grassroots level and improve the knowledge and skills of the community in the management of land resources in order to prevent fires.
Use of Information Communication Technologies Among Female Block Extension Ag...IOSRJAVS
Block Extension Agents are the extension workers who are specifically females and who carry out Gender sensitive issues for female farmers in Nigeria. They have the objective of seeing to the extension needs of the female farmers. The study assessed the use of Information Communication Technologies (ICTs) among Block Extension Agents (BEAs) in South-East Agro-Ecological Zone of Nigeria. Multi-stage sampling technique was used in the selection of the sample for the study. Data were collected with the aid of a structured questionnaire. The data was analysed using descriptive statistics. The mean age of the respondents was 40 years. All the BEAs sampled had formal education where more than half of them (51.04%) had first degree (B.Sc/B.Agric). The mean working experience of the respondents was 10 years. The mean income level of the respondents was N 33,875 per month. The extension agents claimed that twenty-five ICT facilities were available to them in varying degree. The attitude of the respondents towards the use of ICT facilities was positive (mean score=3.11). The extent of use of ICTs by the BEAs was low (mean score=1.45) which can be attributed to the low degree of availability of the ICTs than to their attitude towards the use of the ICT facilities. The BEAs identified thirteen (13) pressing problems that hindered their use of ICTs in varying degree and their major constraint (89.58%) as very limited access to the internet. It is recommended that the ADPs should provide such desirable working conditions that will encourage the BEAs to put in more years of their productive service to the ADPs; Workshops, conferences and seminars should be organized to train the BEAs in the use of ICTs which will improve efficiency in their work. ICT facilities should be made available to BEAs to enhance their productivity.
Study of Genotypic and Phenotypic Correlation among 20 Accessions of Nigerian...IOSRJAVS
Morphological techniques were used to evaluate the diversity in 20 cowpea accessions collected from some parts of Nigeria for two years (2007 and 2008) at Ibadan, South Western Nigeria. Correlation analysis was employed to show the relationships among the traits. Similarly, genotypic and phenotypic variances, genotypic coefficients of variation, heritability and expected genetic advance were estimated for the twelve traits in cowpea for each season. This study shows that for cowpea yield improvement, number of main branches, pod numbers, pods per plant, pods per peduncle and seeds per pod should be part of the selection criteria.
Analysis of Resource Use Efficiency in Small-Scale Maize Production in Tafawa...IOSRJAVS
This paper analyzed the resource-use efficiency of small-scale Maize production in Tafawa-Balewa local government area of Bauchi State. Data were collected from a sample of 120 Maize farmers selected through multi-stage sampling procedure using questionnaire and analyzed using simple descriptive statistics, double-log function and marginal value productivity analysis. The result showed that 90.17% had formal education; 51.67% were males; 90.17% were between the ages of 21-50. Majority 72.50% were married. In terms of farming experience, majority (86.67%) of the respondent had farming experience between 5-20 years. 75.00% had no contact with extension. The double-log function gave the best fit with Adjusted R2 of 81.16%. Production inputs such as seed, fertilizer, labour affected output significantly. Maize production in the study area has an increasing return to scale from the sum of elasticity of production (1.747). Seed and fertilizer were underutilized in Maize production, whereas labour was over used. The major problem confronting the farmers include high cost of inputs (77.50%); Untimely disbursement of credit/inputs (62.50; inadequate extension services (59.17); unstable price (41.67%); draught (33.33%), inadequate credit facilities (31.67%) etc. Profit could be enhanced by increasing the quantity used of seed and fertilizer inputs, its timely supply. Labour should be reduced to optimum level for increase output and total revenue respectively. It is also recommended that extension education and financial support to farmers be improved to allow them increase output and total revenue. There is need for adjustment in resource use in order to improve farm profit at this level of technology used by Maize farmers in the study area.
Role of Trace Minerals in Bolstering Reproductive Health in HeifersIOSRJAVS
Trace minerals play a significant role in improving reproductive health. A study was carried out to evaluate the role of trace minerals in alleviating reproductive health in heifers. A total of 20 heifers were allotted into three groups T0, T1 and T2. T0 (n=4) was kept as control. T1 (n=10) was supplemented with Uniselit (M/S Ayurvet) along with standard basal diet. T2 (n=6) was supplemented with CofeCu along with standard basal diet. Results revealed that there was significant improvement in the physical and chemical parameters of estrus exhibition in the Uniselit supplemented group T1 as compared to control. The conception rate was also higher in group T1 in comparison to control. Thus, it can be inferred that trace minerals have significant influence in improving reproductive health in heifers
Effect of Growth Retardants on Shoot and Root Development of Stevia(Steviareb...IOSRJAVS
Stevia rebaudianaBertoni is a natural sweetener herb, which is promising in food and pharmaceutical production. In Egypt, the gap between sugar production and consumption represents a serious problem, in order to close this gap; Stevia could be cultivated in the Egyptian environmental conditions. The objective of this study was to evaluate the effect of paclobutrazol(PBZ) and ethephon (ET) on shooting and rooting of stevia plant in vitroto improve the survival and growth of Stevia plantlets during acclimatization.The highest shoot number (48.0 shoots/explant) and the highest number of leaves (7.34) were recorded on MS medium containing 0.1mg/l PBZ. Whereas, the highest shoot length (7.36 cm) was obtained on MS medium without supplementation withPBZ or ET. The highest fresh and dry weights of shoots was recorded on MS medium containing 0.5 mg/l PBZ, which gave2.83 and 0.39 g, respectively. The highest number of roots (8.44 roots/shoot) was obtained with 0.1mg/l PBZ. Also, this study indicates that PBZ or ET increased chlorophyll a, chlorophyll b, carotenoids and carbohydrates content in the plant. PBZ and ET had significant effect on thesurvival of plants ex vitro, which recorded 85 and75%, respectively.
Effect of Different Levels of Fat on the Chemical Composition and Sensory Cha...IOSRJAVS
The effect of different levels of fat on the chemical composition and sensory characteristics has been made from the following levels of milk fat: 3%, 2.5% and 2%. The produced cheese was packed into sterile polyethylene bags (300 gram capacity) and stored at 4°C for three months. The chemical analysis was done at 0, 30, 60, 90 and 120 days. The results revealed that significant differences (P< 0.05) were found in protein, ash, total solid, pH, volatile fatty acids and fat contents of the different cheese samples. Sensory characteristics and storage periodof the cheese samples showed significant variations (P< 0.05). The protein, total solids and ash increased throughout the storage period, the lowest values were 21.82±3.49%, 59.29±4.03% and 5.60±0.89% respectively obtained at day zero of the storage. The highest pH occurred at day zero of storage. It was also found that the volatile fatty acids(VFA) increased with the decrease levels of fat, the highest VFA (2.62±0.50%01N ml NaOH/100 gm) was observed in the cheese with 2.5% fat. The statistical analysis showed sensory characteristics of the cheese samples significant (P< 0.05) affected by the fat levels. The present study concluded that production of low-fat cheeses with valuable chemical composition and good quality for the health benefits of the consumers.
Physicochemical and Sensory Characteristics of Sudanese LowFat Cheese during ...IOSRJAVS
This study was carried out in the milk processing units at College of Animal Production Science and Technology, Sudan University of Sciences during September 2014-January 2015. The chemical and sensory characteristics of Sudanese low-fat cheese were investigated as affected by different levels of gum Arabic and storage period. Three hundred and fifty liters (350) of standardized milk with (3%, 2.5% and 2%) of fat were prepared after purchase full cream milk from a private farm at Al Haj Yousif, Khartoum North. Seven treatments were carried out as follows: First treatment is the control in which cheese milk had no additive (3%) of fat. In the second and third with 3% of fat, fourth and fifth with 2.5% of fat and sixth and seventh with 2% of fat, 0.5 and 0.75% of gum Arabic were added respectively to cheese milk before pasteurization then low-fat cheese was made and stored at refrigerator (4°C) for 120 days. Physicochemical and sensory evaluation was done for the cheese samples at day zero, 30, 60, 90 and 120 days intervals. The cheese statistical analysis obtained that gum Arabic significantly (P< 0.05) affected the chemical composition of the cheese. The results also showed that crude protein fat, total solids, pH, volatile fatty acid and ash were significantly (P< 0.05) affected by both levels of gum Arabic and storage period. The results obtained there were significantly differences (P<0.05) between control cheese and the other with 0.5 and 0.75 gum Arabic respectively in all parameters
Assessmens of the Disease Index and the Behavior of Some Peach and Nectarine ...IOSRJAVS
Leaf curl of nectarine and peach, caused by Taphrina deformans (Berk.) Tul, is a difficult disease to control throughout Albania. Heavily infected fruit trees are poorly nourished, develop fewer flower buds, and are more easily damaged from freezing in winter. In this research, susceptibility of 2 peach and 2 nectarine varieties to leaf curl disease was investigated in ecological conditions of Tirane, Albania province in 2014 and 2016. Disease severity was calculated by the 0-5 scale when typical symptoms of leaf curl were evaluated on peach and nectarine leaves in naturally infected orchards. The conditions of natural infection allowed grouping the biological material in 4 classes (plant growth stages) and 6 groups of resistance for leaf curl disease severity. From the data we see that the of disease index (Imc-ja in%) during the three years of study varies from 4.22% in cultivar tire and reaches 22.8% in the Red Star cultivar we also comparisons this level too Control high infection which ranges from 40.66% in Roajal Black cultivar and up to 43.66% in Gomea cultivar.
Characterization and Geographical Classification of Greek Fir Honeys Based on...IOSRJAVS
The objective of the present study was to characterize commercial fir honey produced in different regions in Greece and investigate the possibility of geographical classification using data sets of physicochemical parameters, colour attributes, and volatile compounds using multivariate analysis techniques. For this purpose, 43 fir honey samples were collected during harvesting periods 2010-2013 from five different regions in Greece. Physicochemical parameters (electrical conductivity, ash, pH, moisture, free acidity, lactonic acidity, total acidity, lactonic to free acidity ratio) were determined using official methods of analysis, while colour attributes (L*, a*, b*) and browning index were determined using CIE recommendations and methodology published in the literature, respectively. Finally, volatile profiles were determined using headspace solid phase microextraction coupled to gas chromatography/mass spectrometry. Results showed that honey samples analyzed met the criteria set by regulatory standards for fir honey, and exhibited variations in physicochemical parameter values, colour attributes, and volatile profiles, according to geographical origin. On the basis of the results obtained, it is possible to classify (correct prediction 69.8%) commercial fir honeys produced in specific regions, using a data set of 21 parameters and chemometrics
Impact of Maize Silks Extract, its Application Methods and Their Interaction ...IOSRJAVS
The current study was conducted during the growing season (2014 – 2015), at a private orchard at Safwan area in Basra province-Iraq; to study the effect of several concentrations of maize silks, their application methods and their interaction on some indicators of growth and yield of tomato plants cv. Wijdan. The experiment was factorial and included (24) factorial treatments (4*2*3) resulted from: four levels of maize silks and two application methods, each in three replicates. The results showed a superiority of (60 ml. L.-1) of maize silks extract on most studied characteristics, which was non-significantly differed from the concentration (40 ml. L.-1). For the methods of application, the applying to soil method was superior with most characteristics. Concerning the interaction, the treatment (60 ml. L.-1 maize extract level + applying to soil method) was superior in its effect on most characteristics of tomato plant cv. Wijdan.
KuberTENes Birthday Bash Guadalajara - K8sGPT first impressionsVictor Morales
K8sGPT is a tool that analyzes and diagnoses Kubernetes clusters. This presentation was used to share the requirements and dependencies to deploy K8sGPT in a local environment.
HEAP SORT ILLUSTRATED WITH HEAPIFY, BUILD HEAP FOR DYNAMIC ARRAYS.
Heap sort is a comparison-based sorting technique based on Binary Heap data structure. It is similar to the selection sort where we first find the minimum element and place the minimum element at the beginning. Repeat the same process for the remaining elements.
Literature Review Basics and Understanding Reference Management.pptxDr Ramhari Poudyal
Three-day training on academic research focuses on analytical tools at United Technical College, supported by the University Grant Commission, Nepal. 24-26 May 2024
Online aptitude test management system project report.pdfKamal Acharya
The purpose of on-line aptitude test system is to take online test in an efficient manner and no time wasting for checking the paper. The main objective of on-line aptitude test system is to efficiently evaluate the candidate thoroughly through a fully automated system that not only saves lot of time but also gives fast results. For students they give papers according to their convenience and time and there is no need of using extra thing like paper, pen etc. This can be used in educational institutions as well as in corporate world. Can be used anywhere any time as it is a web based application (user Location doesn’t matter). No restriction that examiner has to be present when the candidate takes the test.
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PROJECT FORMAT FOR EVS AMITY UNIVERSITY GWALIOR.ppt
Nutritive Value of the Carcass of African Catfish (Clarias gariepinus Burchell, 1822) Fingerlings fed at Different Frequencies
1. IOSR Journal of Agriculture and Veterinary Science (IOSR-JAVS)
e-ISSN: 2319-2380, p-ISSN: 2319-2372. Volume 10, Issue 1 Ver. I (January. 2017), PP 83-87
www.iosrjournals.org
DOI: 10.9790/2380-1001018387 www.iosrjournals.org 83 | Page
Nutritive Value of the Carcass of African Catfish (Clarias
gariepinus Burchell, 1822) Fingerlings fed at
Different Frequencies
Laurat, T., Maimunatu, A. and Vandi, P.
Department of Zoology, Modibbo Adama University of Technology, Yola, Nigeria
Abstract: The experiment on African catfish Clarias gariepinus fingerlings 3.55±0.01g average weight and
4.09±0.05cm average length, was to know the effect of feeding frequencies on the nutritive value on the carcass,
the were fed with commercial feed (Coppens) of 58% crude protein level at 5% body weight, once (at 11:00
am), twice (9:00am and 4:00pm), thrice (9:00am, 1:00pm and 4:00pm), and four times (9:00am, 11:00am,
1:00pm and 4:00pm), daily to satiation for 14 weeks. The Mean Feed Consumption show that Treatment D had
the highest total feed consumption of 54.10g, while the lowest feed consumption value of 43.20g was noted
Treatment A which was the fish fed once per day. The mean proximate composition of the fish carcass show that
crude protein was highest in Treatment D with 62.78±0.22, while Treatment A had the least with 54.72±0.02.
Moisture content show that Treatment C had the highest with 11.86±0.14, while Treatment A had the least with
7.80±0.01. Ash content show that Treatment A had the highest with 6.90±0.22, while Treatment D had
1.08±0.63, which was the least. Crude lipid show that Treatment B had the highest with 11.78±0.17, while
Treatment C had the least, with 9.24±0.33. The study suggests that body the composition of African catfish
fingerlings is affected by the frequency of feeding.The results on feed utilization suggests that C. gariepinus
fingerlings should be fed at four times per day for maximum growth and better survival.
Keywords: Feeding Frequency, Nutritive Value, Feed Utilization, African Catfish.
I. Introduction
Fish is a relatively cheap source of animal protein and other essential nutrient required in human diet
[1] it may be the sole accessible and/or affordable source of animal protein for poor households in urban areas.
The nutritive value of fish feed depends largely on the quality of protein of the ingredients used in the
formulation of feed [2]. The nutritional value of fish flesh comprises of moisture, dry matter, protein, lipids,
vitamins, minerals and caloric value of the fish [3] and this is the major reason why fish is a favourite food for
the entire society [4]. [5] reported that fish is acceptable because of its high palatability, low cholesterol and
tender flesh. Fish flesh contains significantly low lipids and higher water than beef or chicken and is favoured
over other white or red meat. Marine fish are source of high quality protein, vitamins and essentials minerals
and a rich source ofomega-3 long chain poly unsaturated fatty acid [6]. These fats are important for maintaining
the integrity of members of all living cells, for making prostaglandins which regulate many body processes such
as inflammation and body clotting [7].
Fish meat is generally a good source of vitamin B and, in the case of fatty species of A and D vitamins.
As for minerals, fish is a particularly valuable source of calcium and phosphorus as well as iron, copper and
selenium. In fish processing, the knowledge of proximate composition i.e. the analysis of moisture, ash, protein
and fat content of fish is very important as the information on lipid, proteins, ash, moisture content is needed for
effective utilization. Proximate composition of food is of growing interest to consumers because of the effect of
the various levels of protein, lipids, water and ash have on the storage and texture of fish, [8]. Several authors
have reported that most fish species are highly sensitive to dietary inadequacy of vitamin C. deficiencies in fish
can cause reduced growth rate, deformation of skeletal and cartilaginous tissues, slow wound repairs, increased
mortality rate, abnormal pigmentation [9]. Besides being used as food, fish is also in increasing demand for use
as livestock feed. However, information on the chemical composition of fishes is valuable to nutritionists that
are concerned with the available sources of low fat, high protein foods such as marine fishes [8]
It is of biological importance to study the distribution of mineral element present in living organism
since many of these elements take part in some metabolic processes and are to be indispensable to all living
things [10]. [11] reported that a reduction in lipid content of fish could be seen as beneficial from a processor’s
point of view because of the associated reduction in the development of rancid flavours Fish nutrition is critical
in fish farming because feed represents 40-50% of production cost [12]. Fish feed account for at least 60% of
the total cost of production [13]. Fish also contains significant amount of essential amino acids, particularly
lysine in high concentration which is low in cereal. Fish protein can therefore be used to complement the amino
acid pattern and the overall protein quality of a mixed diet [14].
2. Nutritive Value of the Carcass of African Catfish (Clarias gariepinus Burchell, 1822) Fingerlings Fed
DOI: 10.9790/2380-1001018387 www.iosrjournals.org 84 | Page
In fish processing, the knowledge of proximate composition i.e. the analysis of moisture, ash, protein
and fat content of fish is very important as the information on lipid, proteins, ash, moisture content is needed for
effective utilization. Proximate composition of food is of growing interest to consumers because of the effect of
the various levels of protein, lipids, water and ash have on the storage and texture of fish. Besides being used as
food, fish is also in increasing demand for use as livestock feed. [15]. It has been found that some animals are
able to synthesize certain vitamins in their bodies in quantities sufficient to meet their metabolic needs; these
vitamins do not have to be provided in their diets [16]. However, some fish species cannot synthesis vitamin C
in their bodies due to lack of gulonolactone oxidase and this enzyme is required for biosynthesis of ascorbic acid
from glucose or other simple precursors [17][18], therefore, it must be provided in their diets. Over the years,
the ascorbic acid requirements of some commercial important fish species have been reported [19]. The
proximate composition of intensively farmed fish is an integral part of evaluating their nutritional status.
However, the diet composition, metabolic adaptation and variation in fish activity are the main factors
responsible for the change in nutritional composition of fish [20]. Thus, analysis of nutrients is an important
factors that could be considered in fish feed assessment. This study then evaluates proximate composition of
African catfish (Clarias gariepinus) fed at different frequencies.
II. Materials and Methods
Study Area: The study was conducted in the Laboratory of the Department of Zoology, Modibbo
Adama University of Technology, Yola, Adamawa State, Nigeria. A total of 180 Clarias gariepinus fingerlings
3.55±0.01g average weight and 4.09±0.05cm average length were obtained from a fish farm in Yola, Nigeria.
Fish were kept in plastic tanks for acclimatization at experimental conditions for seven days before
commencement of feeding trials and were fed a maintenance diet of 1.5mm size commercial feed (Coppens)
containing 58% crude protein. The fingerlings were divided equally into twelve (12) 20L plastic tanks: 12 fish
held in each tank. The tanks were fitted to a semi flow through system. Trial conditions included four feeding
frequencies, with each feeding frequency being experimentally tested in triplicate. The experiment was laid out
in a completely randomized block design with 12 fishes stocked in each plastic tank of 20L capacity. The
experiment was conducted over a period of 14 weeks. The treatment was designated A, B, C and D to represent
once, twice, thrice and four times feeding frequencies respectively.
Feeding
Fish were fed commercial feed (Coppens) of 58% crude protein level at 5% body weight. Feeding trial included
once (at 11:00 am), twice (9:00am and 4:00pm), thrice (9:00am, 1:00pm and 4:00pm), and four times (9:00am,
11:00am, 1:00pm and 4:00pm), daily to satiation for 14 weeks.
Fish Length-Weight Measurement
The initial body weight of each set of fish was measured using sensitive weighing balance before stocking and
subsequently bulk weighing of the fish in each tank was done at two weeks interval. The length measurement
was carried out to the nearest centimeters using a measuring board graduated in centimeters. Total length was
measured from the anterior most extremity of the fish to the end of the caudal fin. The total weight was
measured in grams using Ohaus electric weighing balance of 500 capacity.
Survival and Mortality
The survival and mortality of fish in each treatment were monitored by counting the mortalities on a daily basis
Analysis of Fish Growth and Nutrient Utilization
Mean Weight Gain (MWG)
The fish mean weight gain (MWG) was calculated as the difference between the final mean weight of the fish
and initial mean weight in grams [21].
Specific Growth Rate (SGR)
This is the mean percentage increase in body weight per day over a given time interval [22]. In this
study the time interval was 14 weeks.
SGR = Ln weight at the time of observation – Ln initial weight X 100
Duration of experiment in days
Where Ln = natural log
Relative Growth Rate (RGR)
This is the percentage ratio of the weight gained to the initial body weight which will be determined according
to [23] as follows:
RGR (%) = (Wf – Wi ) x 100
Wi
Feed Conversion Ratio (FCR)
3. Nutritive Value of the Carcass of African Catfish (Clarias gariepinus Burchell, 1822) Fingerlings Fed
DOI: 10.9790/2380-1001018387 www.iosrjournals.org 85 | Page
The efficiency of a feed is normally measured by the amount necessary to produce a unit weight of fish. This is
called the feed conversion ratio [24].
FCR = Total dry feed consumed (g)
Total Wet weight gain (g)
Protein Intake (PI)
This is the numerical value of the quantity of protein present in the feed fed to the fish during the experimental
periods and was determined following [25]method as follows:
PI (g of protein in 100 g diet/fish) = Total feed intake x % crude protein in the diet.
Protein Efficiency Ratio (PER)
This is the efficiency with which the fish utilizes dietary protein and is defined by the equation: [26].
PER = wet weight gain by fish (g)
Weight of crude protein fed
Net Protein Utilization (NPU)
NPU denotes the protein retention in the body of the fish. This was calculated as follows:
NPU = CPf - CPi
PI
Where: CPi = Crude Protein in fish at the beginning of the experiment
CPf = Protein in fish at the end of the experiment
PI = Protein intake (g of protein in 100g of diet/fish)
III. Result
The Mean Feed Consumption for the study period show that Treatment D had the highest total feed
consumption of 54.10g, followed by Treatment C with 48.95g, Treatment B had 45.54g while the lowest feed
consumption value of 43.20g was noted Treatment A which was the fish fed once per day. (Table 1) The mean
proximate composition of the fish carcass show that crude protein was highest in Treatment D with 62.78±0.22,
followed by Treatment C with 58.24±0.11, Treatment B had 55.12±0.05, while Treatment A had the least with
54.72±0.02. Moisture content show that Treatment C had the highest with 11.86±0.14, followed by Treatment B
with 8.36±0.19, Treatment D had 8.21±0.00, while Treatment A had the least with 7.80±0.01. As for crude
fibre; Treatment A had the highest with 1.89±0.04, followed by Treatment B with 1.17±0.04, Treatment C had
1.10±0.15, while Treatment D had 1.08±0.63, which was the least. Ash content show that Treatment A had the
highest with 6.90±0.22, followed by Treatment B with 6.96±0.55, Treatment C had 5.62±0.50n while the least
was 5.25±0.24 in Treatment D. crude lipid show that Treatment B had the highest with 11.78±0.17, followed by
Treatment A with 10.34±0.11, Treatment D recorded 9.31±0.25, while Treatment C had the least, with
9.24±0.33. the Nitrogen Free Extract (NFE) show that Treatment A had the highest with 18.35±0.22, followed
by Treatment B with 16.61±0.18, and Treatment C with 13.94±0.58, while Treatment D had the least with
13.37±0.69 (Table 2). The Feed Conversion Ratio (FCR) show that Treatment B had the highest with 0.54,
followed by Treatment C with 0.52, Treatment D had 0.51The least was Treatment A with 0.44. A summary of
the growth and feed utilization of different feeding frequency is shown in (Table 3).
Table 3.Table 1: Mean Total Feed Consumption Per Fish at Each Feeding Frequency During The Study Period
Table 2: Mean Proximate Composition of Fish Carcass at Different Feeding Frequency (%)
Treatment Crude Protein Moisture Crude Fibre Ash Crude Lipid Nitrogen Free
Extract (NFE)
A. Once 54.72±0.02 7.80±0.01 1.89±0.04 6.90±0.22 10.34±0.11 18.35±0.22
B. Twice 55.12±0.05 8.36±0.19 1.17±0.04 6.96±0.55 11.78±0.17 16.61±0.18
C. Thrice 58.24±0.11 11.86±0.14 1.10±0.15 5.62±0.50 9.24±0.33 13.94±0.58
D.Four times 62.78±0.22 8.21±0.00 1.08±0.63 5.25±0.24 9.31±0.25 13.37±0.69
Initial Fish 54.15±0.05 9.00±0.13 1.90±0.20 5.98±0.00 10.11±0.11 18.86±0.02
± shows the standard error of mean (SEM) of the proximate composition
4. Nutritive Value of the Carcass of African Catfish (Clarias gariepinus Burchell, 1822) Fingerlings Fed
DOI: 10.9790/2380-1001018387 www.iosrjournals.org 86 | Page
Table 3: Summary Table Showing Growth and Feed Utilization of Different Feeding Frequency of Coppens
Diet by Clarias gariepinus
Parameters A
Once
B
Twice
C
Thrice
D
Four times
SEM
Initial mean weight (g) 3.55 3.57 4.00 3.58 ±0.07
Final mean weight (g) 22.66 28.01 29.36 30.98 ±0.20
Mean weight gain (g) 19.11a
24.44b
25.36c
27.40d
±0.8
Initial mean length (mm) 4.09 4.11 4.20 4.15 ±0.05
Final mean length (mm) 10.44 12.81 13.32 13.39 ±0.04
Mean length gain (mm) 6.35 8.70 9.12 9.24 ±0.03
Relative growth rate (RGR) (%) 538.31 a
684.59 b
634.00 c
765.36d
±0.02
SGR (%) 0.82 0.91 0.88 0.96 ±0.03
Mean feed intake (g) 3.09a
3.25 a
3.50 b
3.86 c
±0.12
Feed conversion ratio (FCR) 0.44 0.54 0.52 0.51 ±0.12
Condition factor (K) 7.46 3.71 3.34 0.20 ±0.99
Protein intake 0.95a
1.14 b
1.37 c
1.77 d
±0.04
Protein efficiency ratio (PER) 34.75 44.34 44.53 44.64 ±0.01
Net Protein Utilization (NPU) 60.00 85.09 298.54 487.57 ±0.30
Survival (%) 40 80 60 81.5 ±0.01
Mean with different superscript are significantly different from each other while the same superscript indicate
that they are not significantly different from each other at p<0.05.
IV. Discussion
The Food Conversion Ratio (FCR), show that those fed once and four times daily had low FCR, while
the group fed twice daily had the highest FCR, this is different from the report of [27], who reported that low
FCR values were recorded in African catfish fed with twice every other day followed by once a day and
twice/day respectively whereas significantly no difference in FCR values observed in fingerlings fed with all the
feedings regimes except once every other day fed groups. This indicates that the efficiency of feed utilization
and feed conversion was not influenced by the feed frequency. This might indicate that African catfish fed more
frequently might utilize diet less efficiently than fish fed less frequently. Also, [28], reported too in channel
catfish fed once/day or twice/day had similar FCR values. [29], found that there was no difference in FCR
among hybrid sunfish fed one, two, three, or four times /day. While, [30] stated that feeding frequency had little
effect on FCR. This may indicate that food consumption is the growth limiting factor. As found for other fish
species [31] [32], the greater the feed intake, the greater the growth response. This was the expected result since
a higher amount of nutrients become available to the fish when they are fed more often.
High lipid content was recorded in those fed twice daily than those fed once, thrice and four times
daily, protein content show that those fed four times daily had the highest than those fed once, twice and thrice
daily, this is different from the report of [27] who recorded that African catfish fed once a day and once every
other day had less lipid content than fish fed twice/day and twice every other day. [33] reported increased lipid
levels in channel catfish fed twice daily compared to fish fed once daily. [28] reported, no significant differences
in percentage moisture, protein, and lipid in fillet of channel catfish fed either once or twice daily. It has been
demonstrated that, low body lipid content of fish resulted from declined feeding frequency [34]. [35] reported
that body composition was not influenced when Atlantic salmon were fed once a day.
V. Conclusion
This study suggests that the nutritive value of African catfish fingerlings is affected by the frequency of feeding.
The results of this study based on the feed conversion and feed utilization suggests that C. gariepinus fingerlings
(3.55±0.01g average weight and 4.09±0.05cm average length) should be fed at four times per day for maximum
growth and better survival.
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