OBIOHA , F. C., and I. ONYILOGWU. “OPTIMUM PROTEIN AND ENERGY LEVELS FOR LAYER CHICKENS IN THE HUMID TROPICS”. Nigerian Journal of Animal Production 9, no. 2 (January 16, 2021): 112–120. Accessed September 24, 2026. https://njap.org.ng/index.php/njap/article/view/1999.