Al-Mansour, S., A. Al-Khalf, I. Al-Homidan, and M.M. Fathi. 2011. “Feed Efficiency and Blood Hematology of Broiler Chicks Given a Diet Supplemented With Yeast Culture”. International Journal of Poultry Science 10 (8): 603–607. https://doi.org/10.3923/ijps.2011.603.607.