Nwanna, L.C. “Nutritional Value and Digestibility of Fermented Shrimp Head Waste Meal by African Catfish Clarias Gariepinus”. Pakistan Journal of Nutrition 2, no. 6 (October 15, 2003): 339–345. Accessed July 1, 2025. https://pjnonline.org/pjn/article/view/133.