Khammas, Emad J., and Haider A.H. AL-saigh. “Study the Effect of Protexin® As a Probiotic and Levamisole on The Immunity of Broilers”. Kufa Journal for Veterinary Medical Sciences 5, no. 2 (December 31, 2014): 55–63. Accessed September 22, 2026. https://journal.uokufa.edu.iq/index.php/kjvs/article/view/4205.