Growth, Survival and Production of Pacific White Shrimp Litopenaeus vannamei at different stocking densities under semi intensive culture systems in Andhra Pradesh

The objective of this study was to evaluate the growth, survival and production of Litopenaeus vannamei during 120 days of culture period with 5 stocking densities. To maintain sustainability in production pattern, pond water quality and stocking density play the key role and are directly related to growth, survival and yield. Experiment was carried out in commercial brackish water ponds at Karlapalem, Guntur district, Andhra Pradesh. In the present study Litopenaeus vannamei in different ponds at stocking densities 40/m2, 50/m2, 60/m2, 70/m2 and 80/m2 larvae with an average size goes to 0.80g. After the completion of the experimental period of 120 days the production was 3541.2, 4205.4, 5192.6, 5962.2 and 5046.6kg and the survival was 80.4, 79.6, 78.4, 78.2 and 73.4 percent with respect to the above stocking densities. The mean average weight of the shrimp at harvest was 31.8, 30.7, 30.8, 30.4 and 29.4 gm respectively. This shows that the relationship between stocking density and average body weight is highly significant. Average body weight increases with less stocking density and vice versa. In the present observations it was concluded that L.vannamei is successful in brackish water environment and the survival and growth directly related to stocking density.