THE GRADUAL INCREASE OF LIGHTING INTENSITY AND ITS IMPACT ON THE PRODUCTIVE PERFORMANCE OF BROILERS

This study is conducted to find out the effect of gradual increase lighting intensity and its on productive performance broilers. In this study, 224 one-day-old Ross 308 broiler chicks were randomly distributed into 4 treatments with Replicates for each treatment i.e. The Of Experiment: T1 program according guide ROSS company (Control Treatment), T2 a every 20 minutes, T3 40 T4 Lighting 60 minutes. features Were Studied Weekly at 1-21 ,21-35,1-35 Days. results show significant superiority all experimental in average body weight gain compared control third week as well period from days. It also noted that fourth has rates consuming feed treatment. Besides, second significantly greater relative growth rate days well. Even though it does not differ end experiment. concluded there no difference among both; food conversion factor percentage Mortality. Finally, observed are differences characteristics cumulative 1-35 So, regarded an important indicator leading outcome effects