Oyeleke, O. M. “Effects of Feeding Varying Dietary Crude Protein and Digestible Energy Concentrations on Performance of Pigs Raised in a Humid Tropical Environment”. Nigerian Journal of Animal Production 41, no. 1 (January 19, 2021): 28–40. Accessed September 15, 2025. https://njap.org.ng/index.php/njap/article/view/2651.