Gharib, H., Desoky, A., El-Menawey, M., Abbas, A. O., Hendricks, G., & Mashaly, M. (2008). The Role of Photoperiod and Melatonin on Alleviation of the Negative Impact of Heat Stress on Broilers. International Journal of Poultry Science, 7(8), 749–756. https://doi.org/10.3923/ijps.2008.749.756