Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.

Fresh water prawn culture

11,189 views

Published on

Fresh water prawn culture

Published in: Science
  • Dating for everyone is here: ❤❤❤ http://bit.ly/36cXjBY ❤❤❤
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • Follow the link, new dating source: ❶❶❶ http://bit.ly/36cXjBY ❶❶❶
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here
  • DOWNLOAD THAT BOOKS INTO AVAILABLE FORMAT (2019 Update) ......................................................................................................................... ......................................................................................................................... Download Full PDF EBOOK here { http://bit.ly/2m6jJ5M } ......................................................................................................................... Download Full EPUB Ebook here { http://bit.ly/2m6jJ5M } ......................................................................................................................... Download Full doc Ebook here { http://bit.ly/2m6jJ5M } ......................................................................................................................... Download PDF EBOOK here { http://bit.ly/2m6jJ5M } ......................................................................................................................... Download EPUB Ebook here { http://bit.ly/2m6jJ5M } ......................................................................................................................... Download doc Ebook here { http://bit.ly/2m6jJ5M } ......................................................................................................................... ......................................................................................................................... ................................................................................................................................... eBook is an electronic version of a traditional print book that can be read by using a personal computer or by using an eBook reader. (An eBook reader can be a software application for use on a computer such as Microsoft's free Reader application, or a book-sized computer that is used solely as a reading device such as Nuvomedia's Rocket eBook.) Users can purchase an eBook on diskette or CD, but the most popular method of getting an eBook is to purchase a downloadable file of the eBook (or other reading material) from a Web site (such as Barnes and Noble) to be read from the user's computer or reading device. Generally, an eBook can be downloaded in five minutes or less ......................................................................................................................... .............. Browse by Genre Available eBooks .............................................................................................................................. Art, Biography, Business, Chick Lit, Children's, Christian, Classics, Comics, Contemporary, Cookbooks, Manga, Memoir, Music, Mystery, Non Fiction, Paranormal, Philosophy, Poetry, Psychology, Religion, Romance, Science, Science Fiction, Self Help, Suspense, Spirituality, Sports, Thriller, Travel, Young Adult, Crime, Ebooks, Fantasy, Fiction, Graphic Novels, Historical Fiction, History, Horror, Humor And Comedy, ......................................................................................................................... ......................................................................................................................... .....BEST SELLER FOR EBOOK RECOMMEND............................................................. ......................................................................................................................... Blowout: Corrupted Democracy, Rogue State Russia, and the Richest, Most Destructive Industry on Earth,-- The Ride of a Lifetime: Lessons Learned from 15 Years as CEO of the Walt Disney Company,-- Call Sign Chaos: Learning to Lead,-- StrengthsFinder 2.0,-- Stillness Is the Key,-- She Said: Breaking the Sexual Harassment Story That Helped Ignite a Movement,-- Atomic Habits: An Easy & Proven Way to Build Good Habits & Break Bad Ones,-- Everything Is Figureoutable,-- What It Takes: Lessons in the Pursuit of Excellence,-- Rich Dad Poor Dad: What the Rich Teach Their Kids About Money That the Poor and Middle Class Do Not!,-- The Total Money Makeover: Classic Edition: A Proven Plan for Financial Fitness,-- Shut Up and Listen!: Hard Business Truths that Will Help You Succeed, ......................................................................................................................... .........................................................................................................................
       Reply 
    Are you sure you want to  Yes  No
    Your message goes here

Fresh water prawn culture

  1. 1. WELCOME Balwant Singh balwantsingh1642@gmail.com Dheeraj Shukla FRESH WATER PRAWN CULTURE
  2. 2. Introduction • Freshwater prawn farming has emerged since early 1960 in world, in India 1990. • Marine shrimp are grown in earthen ponds located in coastal areas of countries with tropical and subtropical climates. • The fresh water prawn attains a good size in relative less time. • Fresh water prawn commonly inhabits the Indian lakes, reservoirs, ponds and low salinity areas. • Prawn farming quickly expanding area.
  3. 3. Fresh Water Species Fresh water prawns of the genus Macrobrachium are very suitable for intensive culture. The main species of Macrobrachium are as-: • Macrobrachium rosenbergii • Macrobrachium malcomsonii (Rivers) • Macrobrachium birmanicum • Macrobrachium rude • Macrobrachium idae (Ponds)
  4. 4. Classification of fresh water prawn Macrobrachium rosenbergii • Kingdom : Animalia • Phylum : Arthropoda • Subphylum : Crustacea • Class : Malacostraca • Order : Decapoda • Sub-order : Pleocyemata • Infraorder : Caridea (Natantia) • Superfamily : Palaemonoidea • Family : Palaemonidae • Subfamily : Palaemoninae • Genus : Macrobrachium • Species : rosenbergii (giant river prawn)
  5. 5. Identity and morphology  The adult Macrobrachium rosenbergii can easily be identified from other species in the genus by the following characteristics: • Adult male has a pair of very long legs (chelipeds) • The rostrum is long and bent in the middle with 11–13 dorsal teeth and 8–10 ventral teeth • The movable finger of the leg of the adult male is covered by a dense mat of spongy fur • Distinct black bands on the dorsal side at the junctions of the abdominal segments
  6. 6. Life cycle • In the prawn life cycle four distinct phases comes under: 1) Egg 2) larva (zoea) 3) Post larva (PL) 4) Adult • The female starts to lay eggs about 5–6 hours after mating. • As the eggs extrude, they are fertilized by the sperm attached to the exterior of the female body.
  7. 7. Life Cycle Adults spawn at river, the eggs and larvae drift to inshore estuaries where the juveniles grow.
  8. 8. Embryonic development • The egg development begins with the successful mating between ripe females and mature males. • Incubation of the fertilized eggs takes 18–21 days, depending on the temperature (28°– 30°C). • The number of eggs carried by a female depends on her size, and varies from 3000 to 80,000.
  9. 9. Larval development • The newly hatched larvae require brackish water within 1–2 days, or they will die. • As the larvae moult, they not only increase in size but also increase in complexity, with new body features appearing at each stage. • There are 11 distinct larval stages and it takes about 22–35 days for a larva to complete these 11 stages, to become a post larva (PL). • The change from the larva form to the PL form is called metamorphosis.
  10. 10. Key for identification of larval stages of Macrobrachium rosenbergii Larval stage Age (days) Recognized characters I 1 Sessile eyes II 2 Stalked eyes III 3-4 Uropods present IV 4-6 2 dorsal teeth V 5-8 Telson narrows and elongated VI 7-10 Pleopod buds present VII 11-17 Pleopods biramous VIII 13-20 Pleopods with setae IX 15-22 Endopods of pleopods with appendices internae X 17-23 3-4 dorsal teeth on rostrum XI 23-35 Teeth on half of upper dorsal margin PL 23-35 Adult behaviour
  11. 11. Post larva to adult • Post larvae (PL) – PL1: one day PL • 0.0008 g/PL1 – PL 20: 20 day PL • 0.02 g/PL20 • Swimming seta present on pleopods • Reared in tanks or raceways • Stocked in ponds beginning around PL15-PL20.
  12. 12. Larval Stages of Prawn
  13. 13. Food and feeding habit • The larvae are carnivorous and in culture they are fed on live, newly hatched brine shrimp. • Isochrysis – Brown algae – (3-5 mm) • Chaetoceros – Diatom – (4-6 mm) • Tetraselmis • Green algae • (10-15 mm)
  14. 14. Food and feeding habit • Juvenile and adult prawns are omnivorous. • They feed on a wide variety of food items such as aquatic worms, insects and their larvae, small mollusks and crustaceans, flesh and offal of fish and other animals, grains, nuts, seeds, fruits, algae, tender leaves and stems of aquatic plants. • In the culture medium artificial feed also use for food of prawn.
  15. 15. FEED OF PRAWN
  16. 16. Prawn hatchery • The hatchery building is usually associated with the nursery tanks and grow-out ponds in terms of water supply and other requirements. • A freshwater prawn hatchery produces PL for growing out in ponds and for sale to other prawn grow-out enterprises.
  17. 17. Fresh Water Prawn Farming Concepts • Fresh Water Prawn Culture are grown in earthen ponds located in coastal areas of countries with tropical and subtropical climates. • Ponds are filled with freshwater, Prawn is reproduced and raised in captivity are stocked into the ponds and are ready for harvest in 90 to 120 days.
  18. 18. Farming of Fresh Water Prawn • Fresh Water Culture are depend upon following things: 1) Location of farm 2) Farm Permits 3) Farming Strategies 4) Pond Construction 5) Crop Species & Feeding 6) Stocking 7) Management 8) Harvesting
  19. 19. Farm Location 1) A study of the potential market for the product and careful selection of suitable sites for prawn culture, whether it be for the larval (hatchery) or grow-out phases, is an essential prerequisite for successful farming. 2) Farm constructed near of fresh water body. 3) Road access, power supply, communication facilities and emergency generator are all essential components to run the equipment and operating systems in the hatchery.
  20. 20. Farm Permits • Construction permits from Corps of Engineers • Aquaculture Permits from state • Local permits
  21. 21. Farming Strategies • Extensive – Large ponds – Low stocking densities – Little management or investment • Semi-Intensive – Falls in between the two extreme of intensive and extensive • Intensive – Smaller ponds – Aeration – High stocking densities – Feeding
  22. 22. Water quality • Freshwater from a river, stream or lake, rainwater, or groundwater can be used. • Hardness (as CaCO3) should be in the range 50– 100 ppm. • Seawater is needed to mix with the freshwater to produce brackish water for the larvae. • The seawater is disinfected with 10 ppm of calcium hypochlorite and stored for at least a week before use.
  23. 23. Water Quality for Grow out Ponds • Temperature: > 68F • Salinity: 0.5 - 35 ppt • Dissolved Oxygen: > 5 ppm • pH: 7.0 – 8.3 • Unionized Ammonia: < 0.01 ppm • Nitrite: < 1.0 ppm • Nitrate: < 60 ppm
  24. 24. Pond Construction • Ponds range in size from 1-10 acres • 4-7 feet deep • Gentle bottom slope • Well maintained level
  25. 25. Levels of Pond Culture
  26. 26. Hatchery components • Some of the basic hatchery components and equipment are: 1) Building to house the larval rearing space 2) Hatch tanks 1000 L 3) Larval rearing tanks (LRTs) 4) Holding tanks 1000 L for PL, also used for broodstock holding 5) Nursery tank 5000 L for PL (optional) ………
  27. 27. Hatchery components 6) Freshwater storage tank 7) Saltwater storage tank 8) Mixed water storage tank 9) Water pump management 10) Plastic buckets, basins, containers 11) Equipment for packing and transport of PL 12) Feed and chemicals 13) Ponds (200–400 m2) for rearing and maintaining adult prawns for breeding
  28. 28. Management • Fertilize ponds prior to stocking • Feed good quality prawn feed –35% protein –3-5% bwt per day • Provide aeration when necessary
  29. 29. Harvesting• Harvest in October month • Drain and seine pond net • Direct market or sell to processor • Store after dry
  30. 30. Prawn Harvesting in River & Pond Push nets
  31. 31. Brood stock • The adult male and female prawns chosen for breeding are called brood stock. • On average, 500–1000 prawns (male and female) need to be kept as brood stock. • Berried females 10–12 cm long usually carry about 10,000–30,000 eggs each and 40 g females, 35 g males. • Brood stock are usually reared in ponds, starting with an initial stocking density of 4–5 PL/m2. of pond area and reducing to 2/m2 at adult size.
  32. 32. Fresh Water Prawn Brooder
  33. 33. Growth to maturity • The PL grow to maturity within 4–7 months in freshwater ponds. • The PL grow to maturity is depending on temperature, food and environmental conditions. • The maturity stages of females and male can be determined by external examination of the ovary, and testis.
  34. 34. Feeding brood stock • An example of a pellet feed formulated for brood stock feeding should roughly consist of: 1)Protein - 40% 2)Fat - 10% 3)Carbohydrate - 33% 4)Ash - 09% 5)Fiber - 08% 6)Gross energy - 04.3 kcal/g (18 kJ/g)
  35. 35. Hatch tank management • Berried females ready for spawning should not be disturbed and should be kept secluded in the hatch tanks. • Start with 500 L freshwater in a 1000 L hatch tank, and stock a maximum of 3–4 berried females. • Keep the temperature at 25°–30°C and pH 7.0–7.3 until the eggs hatch. • Tank water should be kept clean and free of dirt and debris through regular water changes and bottom-siphoning
  36. 36. FACTORS ENCOURAGING PRAWN FARMING EXPANSION • Compatible with agriculture • Small farmers can practice in their own land • No interference with mangrove or environment • Can be normally grown in salinity up to 8 ppt • Large suitable areas all over the country
  37. 37. PRAWN FARMING REDUCING POVERTY More than 80% of the farms less an acre and handled by small farmers. Large numbers of mono-crop low-yielding paddies now converted into farms producing high priced prawn and fish in rotation with paddy . Pond embankments grow vegetables and fruits fetching extra income and providing better nutrition.
  38. 38. SOME CURRENT PROBLEMS • Culture mostly dependent on rain water; no assured perennial water supply or drainage network. • Available commercial feeds are either of inadequate quality or are too expensive. • Poor nursery practices. • Declining wild brood-stock population due to over-fishing.
  39. 39. Yields are: 1. Extensive – 500 kg/ha/crop 2. Semi-intensive – 1,000 to 1,500 kg/ha/crop 3. Intensive – 10,000 to 20,000 kg/ha/crop
  40. 40. PRAWN FARMING QUICKLY EXPANDING 0 5000 10000 15000 20000 25000 30000 35000 Areainhectare 1991 1997 2003 Year
  41. 41. Prawn Culture Prawn Culture in Agricultural Land Aqua Culture
  42. 42. Thank You

×