Two hundreds and forty, one day old chicks were allocated randomly into 4 copper treatments (60 chicks each )in three replicates (20 chicks\replicate. They were housed in 12 pens. each pen was considered as experimental replicate . Copper levels, used as copper sulfate (Cu₂SO₄) were 0, 100, 200 and 300 mg/ kg diets. The criteria of response were body weight, weight gain, feed conversion, tibia measurements and mineralization and carcass traits.The experimental period was 35 days . The results indicated that copper supplemented groups were recorded significantly higher values during the 4^th and 5^th week for body weight and during the grower and overall periods for body weight gain compared with the control group which recorded the lowest value for the same parameters and periods mentioned above. However, there were no significant differences in body weight and body weight gain during the 2^nd week of the experiment among the different groups. On the other hand, there were no significant differences among tested groups for feed intake and feed conversion ratio for all experimental periods except the grower period where  birds in the highest two level groups of copper supplementation consumed more feed compared with the other groups. Broiler groups fed diets supplemented with 100 and 300 ppm Cu gave the best values of feed conversion ratio compared with either 0 or 200 ppm Cu groups. No significant effects were detected in relative weights of carcass, liver, gizzard, heart, spleen, edible parts, inedible parts, fat and tibia due to feeding diets containing different levels of Cu supplementation. Also, there were no significant differences between groups fed different levels of Cu supplementation in all tibia measurements and mineralization except for group fed 300ppm Cu which recorded a significant decrease in Ca and P concentrations compared with the other groups. It could be concluded from results obtained that copper sulfate supplementation up to 200 ppm  to broiler diets had beneficial effect on growth performance under this study and without any adverse effects on carcass traits