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Journal of Fisheries and Aquatic Science
Year: 2012  |  Volume: 7  |  Issue: 1  |  Page No.: 65 - 71

Dietary Requirement of Vitamin A and Biochemical Composition of Common Carp Cyprinus carpio var. communis

N. Jeyaraj, M.R. Rajan and P. Santhanam    

Abstract: The Common carp (Cyprinus carpio var. communis) is a potential culture species in fresh water ponds in India. However, growth of an industry around this species is constrained by poor survival during weaning from artificial diets. Hence, the present study was conducted to determine the dietary vitamin A requirement of Common carp (Cyprinus carpio var. communis) by formulating five different diets containing 0 (Control) 100, 200, 300 and 400 vitamin A. Each experimental diet was fed to triplicate groups of 10 fingerlings each with initial average weights of (1.48±0.26 g) maintained at 28±2°C for 30 days. The results revealed that feed consumption, protein consumption, feed conversion efficiency, protein efficiency ratio, growth, percentage growth, relative growth rate, Assimilation and metabolism was higher in feed IV containing 400 mg of vitamin A. Whereas higher gross growth efficiency and net growth efficiency recorded in feed II and feed I, respectively. The biochemical composition (%) such as moisture, protein and lipid of the fish significantly increased when the concentrations of vitamin A increased in the feeds. Interestingly, carbohydrate and ash content decreased with increasing concentrations vitamin A. Based on these results, it is recommended that the diet for fingerling Cyprinus carpio var. communis should contain vitamin A at a level of 400 mg for optimum growth, efficient feed utilization and profitability to farmers.

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