Comparative efficacy of supplemented de-oiled groundnut, sunflower, maize and cottonseed cakes on growth and body composition of fry of common carp, Cyprinus carpio (comm.)

To evaluate the performance of four oilcakes, deoiled groundnut T1, sunflower T2, maize T3 and cottonseed T4 cake in the diets on growth, feed utilisation and body composition of fry of common carp, Cyprinus carpio, four isocaloric and isonitrogenous diets were formulated with 35% protein, and without fish meal. At the end of the feeding trial, based on the weight gain, specific growth rate (SGR), feed conversion efficiency, protein efficiency ratio and productive protein value (PPV%) diet on cottonseed cakes (CSC) gave the best results. The survival rate, viscerosomatic, hepatosomatic index, whole body moisture, protein, lipid and ash contents were not significantly different among all treatments. Therefore, the CSC is recommended as a good protein source in fish feed.