Abd, W. M. ., and B. H. . Ali. “Effects of Zinc-Methionine on Body Performance for Broiler Infected With Newcastle Disease”. Diyala Journal for Veterinary Sciences, vol. 2, no. 3, Sept. 2024, pp. 12-17, https://djvs.uodiyala.edu.iq/index.php/djvs/article/view/209.