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Browsing Thesis by Author "ABDUL REHMAN"

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    Comparative Study of Growth Performance in Pangasius pangasius at Different Locations of Varanasi (Uttar Pradesh) at Commercial Recirculatory System
    (MPUAT, Udaipur, 2023) ABDUL REHMAN; B. K. Sharma
    The purpose of this study is to compare the pangas growth performance at different stocking densities 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 and economics of Pangasius pangasius as well as the stocking density for optimum Pangasius pangasius growth in RAS. There were 3 separate research locations, each with 8 tanks totaling 7.65 × 7.65 x 1.5 metres in size (water volume capacity-100000L). Average body weight of 5-6 gm fish were distributed @ 86,97 and 115 per m3 at sites 1, 2 and 3 respectively. Fed with commercial feed being given at the rates of 6.5%-8 body weight. The result showed significant (p<0.05) 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) > 72.91 ±0.54g (site 2) > 57.93±0.58g (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). Throughout the experiment, the physical characteristics of the water including its temperature, electrical conductivity and total dissolved solids were measured every two weeks and ranged from 25.7 to 27.5°C, 0.63 to 0.65 mS/cm, and 229.72 to 313.67 mg/L, respectively. The crucial chemical characteristics of water, including pH, oxygen dissolution, and alkalinity, which ranged from 7.3 to 7.8, 6.22 to 7.15 mg/L, and 136.03 to 142.92 mg/L, respectively, were also examined. The obtained results indicated that the best growth performance of Pangas was found in Site 1 as compared to other Sites, which realized positively significant at level of 5%. The cost benefit ratio of total fish production was computed as 1.04:1.45. The results of the economic evaluation suggested that there could be a chance for significant production cost reductions.