Madian, K., and W. A. A. El-Ghany,  "Study on the effects of prebiotic, synbiotic and probiotic as alternatives to antibiotic growth promoter, on the performance, intestinal colonization, humoral immune response and clinical serum chemistry in the broiler chickens.",  The 3rd International Conference of the Veterinary Research Division, (National Research Center) December, 5th -6th, pp. pp. 145-172, 2006.