Comparison of nutrients and fatty acid of wild and hatchery fingerlings of Clarias gariepinus fed five formulated feeds and cultured in recirculating aquaculture system

Abstract

Wild and hatchery fingerlings of Clarias gariepinus were cultured in recirculated aquaculture system. They were fed five diets composed of fish meal: poultry by-product meal at a ratio of 100:0%, 75:25%, 50:50%, 25:75% and 0:100%, respectively. The gross chemical composition showed no significant differences in the flesh of wild and hatchery fingerlings in composition, except that the fat content of 25:75% diet was significantly higher (p