Yeast single cell protein in the diet of Oreochromis niloticus (L) fingerlings: An economic evaluation

Six isonitrogenous diets (30% protein) were prepared, D 0 , D IO , D 20 , D 30 , D 40 and D 50 . Diet Do the control diet) consist of fishmeal as the protein source. Diets D 10 to D 50 had fish meal replaced systematically with yeast single cell protein (SCP) in the order 10, 20, 30, 40 and 50%, respectively. Trial feeding was carried out with these feeds on Oreochromis niloticus . The cost benefit evaluation of these diets was carried out. Result showed that the 50% yeast SCP substituted diet had the lowest profit index, the, least expenditure as well as the best sales, net profit and cost-benefit ratio.