A study on growth performance and survivability of tor tor (Hamilton, 1822) fingerlings in earthen pond fed with different feed ingredients

Abstract

The present work embodies the nutritional requirement studies on Tor tor, collected from the river Narmada. During the experiment fingerling with average weight (3. 80g) and length (6. 75cm) respectively were subjected 3 experimental combination feed EF-1 (RB+MOC), EF-2(RB+FF) and EF-3 (RB+FM) was fed for 45 days. The experiment was performed in earthen pond with triplicate. The protein content of the ingredients rice bran (RB), Mustard Oil cake (MOC), floating feed (FF) and fish meal (FM) is recorded as 14%, 30%, 32%, and 45% respectively. During the experiment lowest Feed Conversion Rate (FCR) was recorded with the pond section feed EF3 values are (P1-0.99) (P2-1.03) and (P3-0.96) respectively. In terms of percentage increment of length and weight with EF-3 feed it revealed that the highest average increment in length is 36.1 % and weight 151.7 respectively. Similarly the highest value of Specific Growth Rate (SGR) 1.336 and Average Daily Growth (ADG) 0. 19g/day were recorded highest with EF-3 as compare to EF1 and EF2. Moreover, as compared to all feed combinations EF-3 was found to have the lowest FCR value (0.96) and survivability was highest with EF-3 (64-70%) followed by EF-2 (57-60%) and EF-1 (47-52%). Furthermore, during the experimental period the average concentration of chemical properties of water like pH, DO, Ammonia, Nitrate, phosphate, Total Alkalinity and total hardness was found to be 7.8,9.03 mg/l, 0.035 mg/l, 0.96 mg/l, 0.29mg/l, 224 mg/l and 147 mg/l in respective all experimental ponds. This work also concludes that locally available ingredient when combined in a specific proportion can be a better supplementary feed with fish meal as compare to alone and increase the fish production.