Mahmoud, Usama T., Mootaz Ahmed Abdel-Rahman, and Madeha Hosney A. Darwish. 2013. “The Effect of Chinese Propolis Supplementation on Ross Broiler Performance and Carcass Characteristics”. Journal of Advanced Veterinary Research 3 (4):154-60. https://advetresearch.com/index.php/AVR/article/view/136.