Olanrewaju , H.A., J.L. Purswell, S.D. Collier, and S.L. Branton. 2017. “Effects of Light Ingress through Ventilation Fan Apertures on Selected Blood Variables of Male Broilers”. International Journal of Poultry Science 16 (8): 288–295. https://doi.org/10.3923/ijps.2017.288.295.