E. Rowghani, M. Arab, and A. Akbarian, “Effects of a Probiotic and Other Feed Additives on Performance and Immune Response of Broiler Chicks”, Int. J. Poult. Sci., vol. 6, no. 4, pp. 261–265, Mar. 2007, doi: 10.3923/ijps.2007.261.265.