Author(s): Hansh Raj Choudhary, BK Sharma, B Uppadhyay and SK Sharma

Abstract: The present study deals with the “Effect of different protein levels on growth and survival of Nile tilapia (Oreochromis niloticus) fry”. The experiment was conducted with three replications for each test diet. During experiment of 42 days, the fry of Nile tilapia (Oreochromis niloticus) were fed on four different protein (Casein) levels mixed with basal diets containing rice bran, groundnut cake and mineral mixture. The three different feed ingredients have been mixed with conventional Nile tilapia diet at 26%, 28%, 30% and 32% protein levels. The control containing rice bran, groundnut cake and mineral mixture was also run separately. These experimental feeds were given to fishes @ 8% of body weight per day. The growth performance of test fishes was observed at every weekly interval and accordingly the diet of fishes was readjusted. During the experimental period, the water quality parameters were found congenial for fish growth.

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