Effect of coriander seed powder and α-tocopheryl acetate on Humoral Immune Response, antioxidant status and some blood parameters in broiler chickens

This study was conducted to investigate the effects of dietary inclusion of coriander seed and α-tocopheryl acetate on the immunological response, blood, and antioxidant parameters of broiler chickens. Two hundred forty-one-day old chicks (Cobb 500) were randomly assigned to four treatments arranged in a completely randomized design with three replicates and 20 chicks per each group and kept for 42 days. Dietary treatments included a basal diet without additive (negative control), basal diet containing 250 mg/kg alpha-tocopheryl acetate (positive control), and basal diets containing 0.3 and 0.6% coriander powder. In the days of 35 and 42 days old, two birds were selected from each treatment and evaluated for humoral Immune Response. The levels of malondialdehyde (MDA), plasma antioxidants, triglycerides, cholesterol, HDL, LDL, and VLDL were measured at 42 days of age. Serum levels of triglyceride and cholesterol were significantly lower in coriander and α-tocopheryl acetate treatments than the negative control. The use of coriander seed increased the activity of antioxidant enzymes, superoxide dismutase, and glutathione peroxidase, as well as reduced the serum concentration of malondialdehyde in broiler chickens. Both the total antibody and immunoglobulin M titers were higher in the primary immune response to SRBC injection in coriander seeds and α-tocopheryl acetate treatments compared to the negative control group. However, no significant difference in secondary immune response was observed among all study groups. The results of this study showed that the use of 0.3 and 0.6% coriander seeds in broiler chicken diet improves the immune system, reduces oxidation and balances of blood parameters.