%0 Journal Article %T The effect of replacing Fish meal with 10% of Groundnut cake in the diets of H. longifilis on its Growth, Food conversion and Survival %A SO Ovie %A SI Ovie %J Journal of Applied Sciences and Environmental Management %D 2007 %I University of Port Harcourt %X Growth, food conversion efficiency and survival of H. longifilis fed diets with varying levels of protein in which 10% of fish meal was replaced with groundnut cake were studied for 84 days. Fish fed the diet containing 44.17% crude protein showed the best weight gain, specific growth rate, food conversion ratio and efficiency. There was no significant difference (P>0.05) in all the growth parameters and the survival rate of the fish. Addition of fishmeal to fish diets increases feed efficiency and growth although it is a very expensive ingredient. In northern Nigeria 1kg of fishmeal costs about five hundred Naira while its equivalent of groundnut cake is about one hundred Naira. Cost ¨C effectiveness of diets could be improved by replacing fishmeal with more economical protein sources such as groundnut cake. %U http://www.ajol.info/index.php/jasem/article/view/55134