*Musita A. A.1, Owiti D. O1, Balirwa J. S.2, & Otieno A. C.3
Dr. OTIENO, A. CHARLES, Comparison of Economic Conversion Ratios of fishmeal and peanut-based meals fed to pond-cultured Nile tilapia, Oreochromis niloticus L.; a case for Busoga sub-region, Eastern Uganda(2016)SDRP Journal of Aquaculture, Fisheries & Fish Science 1(1)
Scarcity and rising cost of fishmeal-based aqua feeds has led to the need for low cost and locally available alternatives that are capable of sustaining rapid fish growth. A field experiment was conducted in order to compare Economic Conversion Ratios (ECR’s) of fishmeal and peanut-based diets as sources of dietary protein for pond-cultured Nile tilapia Oreochromis niloticus L. Earthen ponds were used as the rearing units at Busoga University farm and were stocked with six-week old mono-sex fingerlings. A sample survey targeted local fish markets located in Busoga sub-region of Eastern Uganda in order to determine the local Retail Prices(RP’s) for Nile tilapia fish. Dietary treatments included the fishmeal (FM)-based diet and two peanut (PN)-based diets; the peanut meal (PNM)-based diet and the mixed plant meal (MPM)-based diet. The locally available Nile tilapia commercial feed (CF) acted as the control diet. Results indicated no significant difference (p>0.05) in mean values for Economic Conversion Ratios (ECR’s) of the FM and MPM-based diets. However, a significant difference in ECR’s existed (p< 0.05) between the FM and PNM-based diets and MPM and PNM-based diets. Since FM and MPM-based diets exhibited similarity in ECR’s, MPM-based diet should be used for complete substitution of the FM-based diet in aqua feeds for pond-cultured Nile tilapia.