Olanrewaju , H.; Miller, W.; Maslin, W.; Collier, S.; Purswell, J.; Branton, S. Influence of Photoperiod, Light Intensity and Their Interaction on Health Indices of Modern Broilers Grown to Heavy Weights. Int. J. Poult. Sci. 2015, 14 (4), 183–190. https://doi.org/10.3923/ijps.2015.183.190.