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20191
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Subject: Aquaculture × Author: CHINNARI, M × End date: 2019 × Start date: 2000 ×
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    ThesisItemOpen Access
    EFFECT OF DIETARY TRYPTOPHAN SUPPLEMENTATION ON CANNIBALISM, SURVIVAL AND GROWTH OF JUVENILE STRIPED MURREL, CHANNA STRIATA
    (SRI VENKATESWARA VETERINARY UNIVERSITY TIRUPATI - 517 502. (A.P.) INDIA, 2019-11) CHINNARI, M; CHANDRASEKHARARAO, A (MAJOR); RAVINDRAKUMARREDDY, D; MADHAVI, K
    The present study “Effect of dietary tryptophan supplementation on cannibalism, survival and growth of juvenile striped murrel, Channa striata” was conducted in the Wet Laboratory of the Department of Aquaculture, College of Fishery Science, Sri Venkateswara Veterinary University, Muthukur, Nellore Dist. A 63 day feeding trail was conducted to evaluate the effect of different dietary tryptophan supplementation on growth, SGR, FCR, survival and cannibalism in C. striata juveniles. Two hundred and twenty five juveniles were distributed into 5 treatment groups (200 lit tank, 15fish per tank and 0.90 gm in body weight and 3.00 cm in total length). Each treatment group in triplicate setup was fed with a diet containing either 0% (T1), 0.25% (T2), 0.75% (T3), 1% (T4) L- Tryptophan supplementation in the diet. Results obtained in the weekly sampling were subjected to statistical analysis. The water quality parameters recorded were with the optimal range for fish culture. Tryptophan supplemented diets were effective in the reducing the aggressive behavior in juveniles resulted in reduction of cannibalism in treatment diets than in Control. Lowest cannibalism was recorded in the T3 (2.3±0.451) and T4 (2.3± 0.351). The highest survival rate (77.7%) was noticed in the T3 treatment and the lowest was in Control. Growth enhancement was also obtained in the tryptophan supplementations diet treatments. At the end of experiment period, the highest average body weight of 8.15gm (T3 – 0.75% TRP) and the lowest average body weight of 6.49 gm (C – 0.0% TRP) was observed among all varied tryptophan percentage supplementation treatments. The highest weight gain of 7.23 gm was observed in T3 animals and lowest 5.56 gm in Control. The lowest FCR values of 1.59 better suited for culture of juvenile C. striata was found in T3 diet among all experimental diets. In all the tryptophan supplementation treatments the highest SGR (3.45%) was observed in T3 and the lowest recorded for Control (3.07%).