This research work involves a 42 days study on total 240 day-old Ross broiler chicks distributed randomly to four dietary treatments to compare the effect of using different levels of radish seed on productive performance (live body weight and feed conversion ratio), some blood traits (PCV, Hb concentration, H/L ratio and WBC count) and some biochemical blood traits (AST and ALT). Two types of diets were prepared: starter diet was used from one to 21 days and then replaced by grower diet used till the end of the experiment. Besides control group, radish seeds were incorporated into the diet of broilers at the rate of 0.25% (T1), 0.50% (T2) and 0.75% (T3). The results revealed that the performance of the supplemented birds was significantly (P<0.05) improved and the best treatment was T2. Also blood traits (PCV and Hb concentration) of birds of all supplemented groups (T1, T2 and T3) were different (P<0.05) compared to control group. No significant differences (P>0.05) were observed among all experimental groups concerning WBC count. Significant differences (P<0.05) were seen among all supplemented groups concerning blood serum traits (AST and ALT). In conclusion, supplementation broiler ration with radish seed significantly improved productive performance and haematological traits of the birds.