Effect of artificial feed on survival and growth of rainbow trout, Oncorhynchus mykiss (Walbaum) during exogenous feeding in the raceways of Kathmandu, Nepal

Abstract

Low cost, alternative, and unconventional animal protein in replacement to costly shrimp meals were formulated in the artificial feed and their effect on survival and growth of rainbow trout, Oncorhynchus mykiss (Walbaum) during exogenous feeding in farmer’s raceways were compared. Three feed formulations, two with animal protein of silkworm pupae (Treatment-1) and silkworm moths (Treatment-2) and one with synthetic amino acids of lysine and methionine (Treatment-3) were evaluated through survival and growth along with feed efficiency indicators against shrimp meals acting as control (Treatment-4). All the four diets (three formulated and one control) were fed to the free swimming fries, fries, and fingerlings for 150 days (5 months). There was a significant difference on survival (P