El-Masry, Khaled N., Naela M. Ragaa, Mohammed A. Tony, and R.A. El-Banna. “Effect of Dietary Inclusion of Guar Meal With or Without β-Mannanase Supplementation on Broiler Performance and Immunity”. Pakistan Journal of Nutrition 16, no. 5 (April 15, 2017): 341–350. Accessed August 30, 2025. https://pjnonline.org/pjn/article/view/2474.