maha sultan

INTRODUCTIONThe influence of light is a resultant of period, intensity, and colour and wattage power of the lamp. Classen and Riddell, 1989 [4] suggested that birds exposed to increasing photoperiod appeared to be more active. Several workers have examined the effect of light programme on physiological stress of broilers. Buckland et al. (1976)[2] found higher concentrations of plasma corticoids i ...