Growth, survival, and immune potential of post larvae of Indian white shrimp, Penaeus indicus (H. Milne Edwards, 1937) in different salinities with biofloc system (BFT) during nursery phase

Biofloc culture system is an eco-friendly method, because it limits the water usage and effluent discharge to surrounding environment. The present study aimed investigate immune potential, growth, survival of Indian white shrimp Penaeus indicus, post larvae in biofloc technology (BFT) with C:N ratio 15:1 during nursery phase different salinities (5‰, 15‰, 25‰, 30‰, 35‰). Experiments were conducted triplicate 100-L-reinforced fiber plastic (FRP) tanks, P. indicus (post 10) stocked at density 120 numbers/tank (1.2post larvae/L). total suspended solid (TSS) level each group was maintained 200–300 mg/L. results showed that final biomass treatment significantly higher biofloc-reared shrimps when compared clear (p < 0.05). Among salinity BFT treatments, reared 15‰ condition better growth than other treatments achieved a body weight (1.67 g ± 0.067 g). Net production terms 50% tanks (average = 0.85 0.082 1.67 067 g) control (ABW 0.61 0.07 0.98 observed varying respective (CW) system. Total serum protein levels (120.32 3.68 mg/ml) other. (0.14 0.011OD/min) 5‰ more pro-phenol oxidase (0.11 0.009 OD/min) activity treatments. haemocyte count (THC) calculated highest value 6.33 0.33 × 106 BFT. In conclusion, lower rearing did not show optimum range case larvae.