Obudulu, C., N. P. Udeh, J. J. Okeke, O. A. Okeke, K. P. Okafor, C. C. Egwuagu, and M. Ogbozor. “Comparison of the Growth Performance of Three Commercial Hybrid Chicken Varieties Using Grain Based Feeds”. Journal of Agriculture and Ecology Research International, Vol. 22, no. 5, Sept. 2021, pp. 19-27, doi:10.9734/jaeri/2021/v22i530199.