The research was conducted to examine the effects of supplementation of Malvasilvestris and great burdock on performance and serum composition of male broiler chickens. A total of 240male broilerchickens were divided into 4 groups and 3 repetitions with 20 chickens each.The results showed that the highest amount of daily feed intakeandbody weight gain were observed in the group3but the best result for FCR was in G4. The highest percent of liver was observed in experimental group 2, the highest percent of breast and lowest percent of abdominal fat were in experimental groups 3 and4.Also the serum total cholesterol, Triglycerides and LDL concentration were significantly reduced in groups of 4 compared to the control group (P<0.05). But the level of HDL and glucose did not significantly change between groups.
