activities were not affected by the treatments, whereas a greater (Po0.05) liver catalase activity (CAT) was recorded in broiler chickens fed 0.25 or 0.75% POP. Erythrocyte GSH-Px activity was also greater (Po0.05) when 0.50 and 1.00% of POP was added to the diet. Serum total antioxidant capacity (TAC) and serum and liver malondialdehyde (MDA) concentrations were not affected by POP supplementation. Carcass characteristics, serum cholesterol, glucose, albumin, total protein, high density lipoproteins, and low density lipoproteins as well as haematocrit and haemoglobin values were not affected by POP treatments, whereas serum triglycerides increased (Po0.05) in broiler chickens fed POP supplemented diets. Supplementation of diet with POP increased Lactobacillus population and decreased Escherichia coli population in the ileum (Po0.05). In conclusion, POP improved feed efficiency and antioxidant status and can be considered as a feed additive in broiler chickens