Olanrewaju , H.A., W.W. Miller, W.R. Maslin, S.D. Collier, J.L. Purswell, and S.L. Branton. 2015. “Influence of Photoperiod, Light Intensity and Their Interaction on Health Indices of Modern Broilers Grown to Heavy Weights”. International Journal of Poultry Science 14 (4): 183–190. https://doi.org/10.3923/ijps.2015.183.190.