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Abstract
Green and yellow plantain (Musa paradisiaca) peels were used to replace yellow maize (Zea mays) in the diets of African catfish, Clarias gariepinus (5.52 ± 0.54 g) initial weight. Five treatments used were: T1 (control diet containing 100% maize), T2 (80% maize + 20% green peels), T3 (70% maize + 30% green peels), T4 (80% maize + 20% yellow peels), and T5 (70% maize + 30% yellow peels). After 70 days of feeding, growth performance was statistically the same in all treatments. There was significantly higher carcass protein in fish fed T2, T3, and T4 than fish fed T1 and T5 (P > 0.05). Supplementation of the plantain peels in the diets significantly increased mineral (Ca, Mg, Fe) and reduced fat and cholesterol contents of the fish. There were no differences in the white blood cells of fish in all the treatments. Economic estimation revealed that it would be most cost effective to produce the fish by using T2 (80% maize + 20% green peels). In summary, plantain peels can replace up to 30% of maize in African catfish diets.