ANS18-10-L21-SHRIMP-GROWOUT

ANS18-10-L21-SHRIMP-GROWOUT - ANS – 18; Shrimp Culture...

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Unformatted text preview: ANS – 18; Shrimp Culture ANS 1 50 45 40 Weight in grams 35 30 25 20 15 10 5 0 P. monodon (g) P. vannamei (g) 0 0 0 0 16 0 20 40 60 80 10 12 14 Culture period in days 18 0 ANS – 18; Shrimp Culture ANS 2 Cultured Shrimp Production Metric Tons 1,400,000 1,200,000 1,000,000 Metric Tons 800,000 600,000 400,000 200,000 - 1. Hatcheries 2. Reproduction 3. Feed 4. IQF 1951 1961 1971 Ye a r 1981 1991 2001 Capture production = ~ 2,000,000 mt ANS – 18; Shrimp Culture ANS 3 Shrimp growout ANS – 18; Shrimp Culture ANS 4 Growout - general Optimum culture conditions for pond-reared penaeid shrimp • • • • • Temperature Salinity pH Dissolved oxygen saturation Secchi disk values 25 - 30 oC 15 (3) - 30 ppt 7-9 3.5 ppm to 25 - 35 cm ANS – 18; Shrimp Culture ANS 5 Growout - extensive • Stocking density • • • • • ≤ 10,000/ha Tidal exchange Natural prey stimulated by fertilizers Production costs $ 1.00 - $ 3.00/kg of live shrimp harvested Harvests around 500 kg/ha/yr In that conversion of mangroves is now illegal in most countries no new extensive operations are being put into place ANS – 18; Shrimp Culture ANS 6 Growout – semi-intensive • Construction costs $ 10,000 - $ 35,000 per hectare • Stocking density 30,000 – 200,000 P.L.s/ha • PL40 survival to harvest > 50% • Diesel pumping of water, • • • up to 25%/day Production costs $ 2.00 – 6.00/kg of live shrimp harvested Both fertilization and formulated feeds used Harvests 500 – 5,000 kg/ha/yr ANS – 18; Shrimp Culture ANS 7 Practical shrimp feeds Ingredients 25% Protein % of diet 10.0 10.0 20.8 50.0 38% Protein % of diet 16.0 15.0 5.0 30.8 22.0 Fish meal Shrimp head meal Squid meal Soybean meal, CP >48% Cereals or byproducts ANS – 18; Shrimp Culture ANS 8 Practical shrimp feeds – cont. Ingredients 25% Protein % of diet 4.0 2.0 2.5 included 38% Protein % of diet 4.0 1.0 0.2 2.0 2.5 included Fish oil Soybean lecithin Cholesterol Pellet binder Dicalcium phosphate Vitamin and mineral mix ANS – 18; Shrimp Culture ANS 9 Shrimp growout - intensive • 0.1 – 1.5 ha tanks • • • • • or ponds Construction costs $ 25,000 - $ 250,000 per hectare if indoors Stocking density > 30,000 – 600,000 P.L.s/ha Diesel pumping of water, 30%/day or more Production costs $ 4.00 – 8.00 per kilogram of live shrimp harvested Harvests 5,000 – 20,000 kg/ha/yr 10 ANS – 18; Shrimp Culture ANS Levels of shrimp culture Extensive Yields (kg/ha/yr) Stock (PL/m2/crop) Feed Water Exchange Aeration Energy (HP/ha) ANS – 18; Shrimp Culture ANS Semi-inten. 500 – 5,000 3 - 20 Fertilize /Feed Pump Water Ex & Aerators 2-5 Intensive 5,000 10,000 20 - 60 Complete Feeds Pump Aerators + water ex. 15 - 20 11 <100 – 500 0.1 – 1.0 Natural Tidal Natural 0-2 ...
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