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Biofloc-based Vannamei Experiences in India What We Started, How Are We Doing & Where Are We Going? Anil Ghanekar www.ecosecuresystems.com.

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Presentation on theme: "Biofloc-based Vannamei Experiences in India What We Started, How Are We Doing & Where Are We Going? Anil Ghanekar www.ecosecuresystems.com."— Presentation transcript:

1 Biofloc-based Vannamei Experiences in India What We Started, How Are We Doing & Where Are We Going? Anil Ghanekar

2 THE BEGINNING Water Exchange- The Only Technology Water-exchange to control water quality Traditional tidal fed ponds Shrimp aquaculture’s happy beginning High tide Low Tide Pond

3 WATER EXCHANGE has PROBLEMS with Biosecurity, Environment & Profitability Entry of water borne infections – WSSV Environmental issues- CAA was formed Water treatment of both raw water and waste water is expensive

4 How to reduce water exchange? ALGAE = Sunlight + Nitrogen Reduced water exchange R.A.S. = Autotrophic Bacteria + Nitrogen Exchange through filters Biofloc = Heterotrophic Bacteria + N + Carbon Zero exchange

5 Comparative Setup Costs Between Autotrophic & Heterotrophic Systems Bio-filtration High Cost Biofloc Low Cost 2004 onwards2007 onwards

6 Comparative FCRs of RAS And Biofloc Nursery Systems Results with RAS nursery system ( ) Results with Biofloc Nursery systems (2007) SpeciesDensity/m3Animal wt in mg. FCR range P. monodon10,00015 to to 2.4 F. indicus18,00015 to to 1.8 TANKABC SpeciesF. indicus P. monodon density/m % Survival83%73%91% FCR Harvest weight (mg)/shrimp 0.225mg 0.125mg (Published in GAA May 2009)

7 Why Biofloc? Low Or Zero Exchange Better Biosecurity Lower FCR Better Immunity Higher Density

8 Biofloc Nursery 100 m3 circular tanks Farm starter feed No venturi or air lifts Only aerotube based aeration of 1 Hp/tank Max stocking density of 10,000/m3

9 Results With L. Vannamei Juveniles Reared In Low Salinity Biofloc Nurseries & Farms ( ) BatchABC Days in Nursery Juvenile weight 240 mg 320 mg350 mg Days in Farm Average weight at Harvest 22 g 18 g20 g Max 10,000 juveniles/m36 hours 95%+ survivalCompensatory growth

10 Biofloc Nursery Reared Juveniles Show Compensatory Growth In The Farm

11 Biofloc Growout Trials 1000 m 2 Lined Ponds Central Drain Aerotube Aeration Biomass Of 3kg /m 3 40 Count In 80 Days 0.3gm Stunted Juveniles Stocked

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13 Biofloc Nursery A Potent Link Longer Testing Window Better Immunity 3 Crops Instead Of 2 Crops A Year Larger Animals Higher Farm Survival Productivity 150% Hatchery 150% + PL requirement Biofloc Nursery 3-5 weeks Farm 150% production

14 Hitide Farms 3 Years 5 Crops Excellent For Zero Exchange Sludge removal is very critical

15 Biofloc at Research Institutions C.I.B.A. Dr. Krishnani from National Institute of Abiotic Stress Management, Baramati Dr. Kurup and students - Kerala University of Fisheries and Ocean Studies.

16 FUTURE Less Area Less Water Less Workers Less Power Totally Biosecure Predictable Production Weekly/Daily Supply

17 Future Solutions Less Area Less Water Less Workers Less Power Totally Biosecure Predictable Production Weekly/Daily Supply High Density Zero Exchange Automation Efficient Technology Zero Exchange High Survival More Ponds

18 Future Research & Development Pure Biofloc Nurseries And Farms Low Density Biofloc With Mixed Systems Genetics Specialized Feeds Molecular Biology Different Species Both Biofloc and Vannamei are here to stay

19 Thank You


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