The Role of Photoperiod and Melatonin on Alleviation of the Negative Impact of Heat Stress on Broilers

H.B.A. Gharib, A.A. Desoky, M.A. El-Menawey, Ahmed. O. Abbas, G.L. Hendricks and M.M. Mashaly

International Journal of Poultry Science 7 ( 8 ): 749 - 756 , 2008