This study was carried out to determine the effects of different amounts of copper and iron addition to diets on body weight gain, feed consumption, feed efficiency and some blood parameters in Japanese quail. In the study, 210 Ja-panase quails, 10 days old were divided into five groups. The control group was fed with basal diet, energy and protein of which was balanced. Experimental group diets were prepared with supplementation of 100 ppm iron (Group I), 100 ppm iron and 100 ppm copper (Group II), 100 ppm copper (Group III), 200 ppm copper (Group IV) to control diet. The experiment was lasted at 5 weeks. As a result; supplementation of 100 ppm copper significantly increased body weight gain, feed consumption and feed efficiency until second week (p<0.05). 100 ppm iron and 100 ppm iron + 100 ppm copper significantly increased erytrocyte number, haemoglobin concentration and haematoci value.