This study investigated the growth and survival of Clarias gariepinus larvae fed three different diets over 42 days: Diet 1 (Artemia salina), Diet 2 (inert diet of egg white and fish meal), and Diet 3 (combination of Diets 1 and 2). The highest specific growth rate, final weight, and survival rate were observed in larvae fed Diet 3. Diet 3 also resulted in the highest performance index. While growth did not significantly differ between diets, survival and final mean weight did differ significantly and were highest for Diet 3. The results indicate that feeding C. gariepinus larvae a combination of live feed (Artemia salina) and inert diet optimized growth performance and survival
The early mortality syndrome (EMS) in shrimp has been ravaging production systems, spreading vertically in Asia and horizontally to countries as far away as Mexico since first reported in 2009.
Effects of WSSV and bio-security on shrimp farming in BangladeshWorldFish
Effects of WSSV and bio-security on shrimp farming in Bangladesh. Presentation by Partho Pratim Debnath, Ben Belton, Manjurul Karim, Hendrik Jan Keus, Chadag Vishnumurthy Mohan.
The early mortality syndrome (EMS) in shrimp has been ravaging production systems, spreading vertically in Asia and horizontally to countries as far away as Mexico since first reported in 2009.
Effects of WSSV and bio-security on shrimp farming in BangladeshWorldFish
Effects of WSSV and bio-security on shrimp farming in Bangladesh. Presentation by Partho Pratim Debnath, Ben Belton, Manjurul Karim, Hendrik Jan Keus, Chadag Vishnumurthy Mohan.
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.
A SEMINAR ON INDUCING AGENTS OF HYPOPHYSATIONKartik Mondal
The precise combination of environmental factors required for maturation, ovulation and spawning.
However, quite often, under farm conditions, the requisite environmental factors are either not available or do not persist for sufficient length of time for spontaneous maturation to occur.
The pioneering discovery of B.A. Houssay (1931) and Von Ihering (1935, 1937, Argentina) that fishes can be induced to spawn by injecting pituitary homogenates has somewhat mitigated the problem.
The principal advantage of this technique, referred to in aquaculture parlance as “Hypophysation.”
When farming animals and fish, there is often a danger that we may assume that their dietary requirements match our own. However, those of the common carp, Cyprinus carpio, certainly do not.
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.
A SEMINAR ON INDUCING AGENTS OF HYPOPHYSATIONKartik Mondal
The precise combination of environmental factors required for maturation, ovulation and spawning.
However, quite often, under farm conditions, the requisite environmental factors are either not available or do not persist for sufficient length of time for spontaneous maturation to occur.
The pioneering discovery of B.A. Houssay (1931) and Von Ihering (1935, 1937, Argentina) that fishes can be induced to spawn by injecting pituitary homogenates has somewhat mitigated the problem.
The principal advantage of this technique, referred to in aquaculture parlance as “Hypophysation.”
When farming animals and fish, there is often a danger that we may assume that their dietary requirements match our own. However, those of the common carp, Cyprinus carpio, certainly do not.
Nutritive Value of the Carcass of African Catfish (Clarias gariepinus Burchel...IOSRJAVS
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
Toxic characteristics of Clarias gariepinus juveniles (Tuegels 1982) exposed ...iosrjce
IOSR Journal of Environmental Science, Toxicology and Food Technology (IOSR-JESTFT) multidisciplinary peer-reviewed Journal with reputable academics and experts as board member. IOSR-JESTFT is designed for the prompt publication of peer-reviewed articles in all areas of subject. The journal articles will be accessed freely online.
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.
Detritivorous marine polychaete worms are farmed commercially as live bait for sport angling and most recently as an ingredient in formulated aquaculture feeds.
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.
22-24 November 2017. Addis Ababa, Ethiopia. AU Conference Centre. Regional Meeting on Agricultural Biotechnologies in Sustainable Food Systems and Nutrition in Sub-Saharan Africa.
Presentation by Emmanuel Kaunda, Lilongwe University of Agriculture and Natural Resources, Lilongwe, Malawi A review of the use of biotechnology in aquaculture and fisheries (PAEPARD supported consortium)
The purpose of this manual is to help trainers provide training-cum-demonstration support on fish pond management techniques. It can be used to teach farmers the concepts, skills and practices of good pond management that are vital for producing economically feasible yields and solving pond management problems.
In addition, this manual is useful as a quick-reference and self-help guide for fishery facilitators, fish farmers and extension workers. It is designed to arouse the interest of fish farmers and the general public, thereby stimulating greater investment in fish farming. This simple training and demonstration manual has the potential to greatly improve the practices of fish farmers and help promote rapid rural aquaculture development.
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.
Fish Hatchery Management for Maintaining the Genetic Quality
Artificial propagation of fish species in hatcheries has been conducted on a large scale for several decades
In recent years, conservation hatcheries aims not only to produce fish for supplementing wild populations but also to preserve the genetic diversity and integrity of threatened or endangered species
Important considerations are maximizing genetic diversity and effective
population size while minimizing inbreeding and adaptation to captivity
Objective
To maintain the genetic diversity, effective population size and to minimize inbreeding
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.
Freshwater and coastal aquaculture development can benefit from internal and external experience for preventing environmental damage and for avoiding harmful effects of degradation on aquaculture resources. Strategies to compensate for the loss of aquatic fauna (e.g. due to physical obstructions) are directly linked to important environmental issues, such as the transfer of exotic species, the spread of diseases and loss of genetic diversity, eutrophication, impairment of aesthetic qualities and the disruption of indigenous fish stocks.
There presently, conceptual frameworks for aquatic environment management backed by legal and administrative tools to create or enforce ration systems for water management, land use or fisheries and aquaculture development strengthened by adaptive institutionalization.
Dr. Jeff Silverstein - Current Status of U.S. Aquaculture ResearchJohn Blue
Current Status of U.S. Aquaculture Research - Dr. Jeff Silverstein, National Program Leader, Aquaculture, USDA-Agricultural Research Service, from the 2013 NIAA Merging Values and Technology conference, April 15-17, 2013, Louisville, KY, USA.
More presentations at http://www.trufflemedia.com/agmedia/conference/2013-niaa-merging-values-and-technology
Explore the innovative world of trenchless pipe repair with our comprehensive guide, "The Benefits and Techniques of Trenchless Pipe Repair." This document delves into the modern methods of repairing underground pipes without the need for extensive excavation, highlighting the numerous advantages and the latest techniques used in the industry.
Learn about the cost savings, reduced environmental impact, and minimal disruption associated with trenchless technology. Discover detailed explanations of popular techniques such as pipe bursting, cured-in-place pipe (CIPP) lining, and directional drilling. Understand how these methods can be applied to various types of infrastructure, from residential plumbing to large-scale municipal systems.
Ideal for homeowners, contractors, engineers, and anyone interested in modern plumbing solutions, this guide provides valuable insights into why trenchless pipe repair is becoming the preferred choice for pipe rehabilitation. Stay informed about the latest advancements and best practices in the field.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Hierarchical Digital Twin of a Naval Power SystemKerry Sado
A hierarchical digital twin of a Naval DC power system has been developed and experimentally verified. Similar to other state-of-the-art digital twins, this technology creates a digital replica of the physical system executed in real-time or faster, which can modify hardware controls. However, its advantage stems from distributing computational efforts by utilizing a hierarchical structure composed of lower-level digital twin blocks and a higher-level system digital twin. Each digital twin block is associated with a physical subsystem of the hardware and communicates with a singular system digital twin, which creates a system-level response. By extracting information from each level of the hierarchy, power system controls of the hardware were reconfigured autonomously. This hierarchical digital twin development offers several advantages over other digital twins, particularly in the field of naval power systems. The hierarchical structure allows for greater computational efficiency and scalability while the ability to autonomously reconfigure hardware controls offers increased flexibility and responsiveness. The hierarchical decomposition and models utilized were well aligned with the physical twin, as indicated by the maximum deviations between the developed digital twin hierarchy and the hardware.
Water scarcity is the lack of fresh water resources to meet the standard water demand. There are two type of water scarcity. One is physical. The other is economic water scarcity.
Immunizing Image Classifiers Against Localized Adversary Attacksgerogepatton
This paper addresses the vulnerability of deep learning models, particularly convolutional neural networks
(CNN)s, to adversarial attacks and presents a proactive training technique designed to counter them. We
introduce a novel volumization algorithm, which transforms 2D images into 3D volumetric representations.
When combined with 3D convolution and deep curriculum learning optimization (CLO), itsignificantly improves
the immunity of models against localized universal attacks by up to 40%. We evaluate our proposed approach
using contemporary CNN architectures and the modified Canadian Institute for Advanced Research (CIFAR-10
and CIFAR-100) and ImageNet Large Scale Visual Recognition Challenge (ILSVRC12) datasets, showcasing
accuracy improvements over previous techniques. The results indicate that the combination of the volumetric
input and curriculum learning holds significant promise for mitigating adversarial attacks without necessitating
adversary training.