Abstract:The purpose of this study is to compare the pangas growth performance at different stocking density in commercial recirculating aquaculture systems (RAS) at different locations of Varanasi district of Uttar Pradesh, India. The goal of the study was to evaluate the yield or economics of pangasius
as well as the stocking density for optimum
growth in RAS. There were 3 separate research locations, each with 8 tanks totaling 7.65 × 7.65 x 1.0 m
3 in size. Average body weight of 5-6 gm fish were distributed at the rate of 86, 97 and 115 per m
3, with commercial feed being given at the rates of 6.5-8% body weight.
The result showed significant response in the growth performance of fish. The growth performance results were in following order:
Net Weight gain: 111.16±0.59 g (Site 1) > 71.91±0.54 g (site 2) > 57.93±0.58 g (Site 3).
Percent weight gain: 95.25 (Site 1) >90.73 (Site 2) > 82.73 (Site 3).
SGR: 4.2 (Site 1) > 4.1 (Site 2) > 3.7(site 3).
FCR: 1.35 (Site 2) > 1.55 (Site 1) > 1.74 (Site 3).
The obtained results indicated that the best growth performance of Pangas was found in Site 1 and 2 as compared to Site 3, which realized positively significant at level of 5%. The cost benefit ratio of total fish production was computed as 1.10:1.56. The results of the economic research suggested that there could be a chance for significant production cost reductions.