Esonu, B.; Izukanne, R.; Inyang, O. Evaluation of Cellulolytic Enzyme Supplementation on Production Indices and Nutrient Utilization of Laying Hens Fed Soybean Hull Based Diets. Int. J. Poult. Sci. 2005, 4 (4), 213–216. https://doi.org/10.3923/ijps.2005.213.216.