Authors : Valsamma Joseph, M. Haseeb, S. Ranjit, A. Anas and I.S. Bright Singh
Abstract: The study evaluates field level performance of a zero water exchange shrimp farming protocol in terms of production of shrimp biomass and maintenance of water and sediment qualities in 10 earthen modified semi-intensive farms in different parts of Kerala, India which were managed through bioremediation and application of probiotics. Water and sediment qualities during the culture were maintained by the addition of DetrodigestTM, an indigenous bioaugmentor. The ponds were stocked with healthy Penaeus monodon seed (PL 20), tested nested PCR negative for White Spot Syndrome Virus (WSSV), at an average stocking density of 5 m-2. The gut probiotic EnterotrophoticTM and an antagonistic probiotic PS-1 were used through out the culture period. Eh and pH of the sediment did not vary significantly during different phases of the culture and water quality parameters, except salinity and total hardness, also followed the same trend, maintaining stable environment quality throughout the culture period compared to the control ponds. Routine animal health assessment showed no outbreak of diseases in any of the ponds under study whereas in the control pond there was mortality and culture failure. Cost benefit ratio indicated profitability and the average feed conversion ratio was close to the optimum.
Valsamma Joseph, M. Haseeb, S. Ranjit, A. Anas and I.S. Bright Singh, 2014. Shrimp Production under Zero Water Exchange Mode Coupled with Bioremediation and Application of Probiotics. Journal of Fisheries International, 9: 5-14.