Comparing the effect of cassava root and corn-based diets as sources of energy in diets for Nile tilapia (Oreochromis niloticus) : master of science (M.Sc.) thesis

body condition carbohydrates cassava cooking diet energy value feed meals feed roots fish feeding fish meal ingredients maize milling mixing norway oreochromis niloticus peeling proteins soybean meal tilapia (genus) water quality weight gain