Stocking density, Survival rate and growth performance of Litopenaeus vannamei (Boone, 1931) in different cultured shrimp ponds from Vetapalem, Prakasam District, Andhra Pradesh, India
D Parvathi, P Padmavathi
The present study is the report on the culture of L. vannamei in the brackish water shrimp ponds in vetapalem, Chirala, Prakasam district, Andhra Pradesh, India. The study was conducted in four culture ponds at different stocking densities. Crab fencing and bird netting was done before pumping water to prevent the auto entrants. The average pH reading for the AM was 7.8 to 8.2, while a pH of 8.3 to 8.9 was recorded in the PM. After 110th days of pond culture, the mean average weights of the shrimp at harvest were 19.5, 19.8, 19, and 19.8; survivals were 71, 66, 74, and 73 %; FCR was 1.7, 1.6, 1.7, and 1.7. The average production was 7000, 8000, 7200, and 7300 kg/ha for P1, P2, P3, and P4, respectively. Two way ANOVA was attempted between stocking density and Average body weight (ABW). The calculated p value was 0.0015. Its highly significant. So ABW increases with less stocking density and vice versa. The present investigation, it was concluded that L. vannamei culture is successful in brackish water environment and the growth is directly related to stocking density.