ashayerizadeh, O., B Dastar, F. Samadi, M. Khomeiri, A. Yamchi, and S. Zerehdaran. 2014. “Comparison the Effect of Two Multi-Strain Probiotics and Antibiotic on Growth Performance, Carcass Characteristics, Gastrointestinal Microbial Population and Hematological Indices of Broiler Chickens”. Scientific Journal of Animal Science 3 (4):110-19. http://sjournals.com/index.php/sjas/article/view/835.