Akande, K., and O. Oyebanji. “The Utilization of African Black Pepper (Piper Guineense) As Feed Additive on the Growth Performance of Broiler Chickens”. Nigerian Journal of Animal Science, vol. 25, no. 1, Oct. 2023, pp. 134-8, https://www.njas.org.ng/index.php/php/article/view/1157.