Ovwigho, Bishop O., F.U.C. Mmereole, I. Udeh, and P.O. Akporhuarho. “Comparison of Constraints to Poultry Producers in Delta State Nigeria”. International Journal of Poultry Science 8, no. 5 (April 15, 2009): 480–484. Accessed September 21, 2025. https://ijpsjournal.org/index.php/ijps/article/view/1194.