Esonu, B.O., R.O. Izukanne, and O.A. Inyang. “Evaluation of Cellulolytic Enzyme Supplementation on Production Indices and Nutrient Utilization of Laying Hens Fed Soybean Hull Based Diets”. International Journal of Poultry Science 4, no. 4 (March 15, 2005): 213–216. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/317.