Ezike, J., J. Ezea, M. Chima, and E. Ewa. “Growth Performance and Blood Profile of Broiler Chickens Administered West African Black Pepper (Piper Guineense)”. Nigeria Agricultural Journal, vol. 56, no. 3, Dec. 2025, pp. 442-59, https://www.ajol.info/index.php/naj/article/view/324795.