Yusuf, H. B., Yahaya, M. S., Yakubu, B., and Duwa, H. 2020. “Effect of Energy-Protein Ratio on the Performance of Laying Chickens in the Northern Guinea Savanna Zone of Nigeria”. Nigerian Journal of Animal Science and Technology (NJAST) 3 (1), 32 - 41. http://www.njast.com.ng/index.php/home/article/view/58.