Effect of dietary coriander seed powder supplementation on the serological and immunological parameters of broilers

An investigation on the effect of supplementing coriander seed powder (CSP) in broilers' diet on serum profile and immunological parameters was done. One hundred and twenty day-old commercial broiler chicks were divided into five treatment groups of 24 birds, and each group had three replicates of 8 birds. T₁ served as control and was offered basal diet as per BIS (2007) supplemented with antibiotics but no CSP. Treatment groups T₂, T₃, T₄ and T₅ were offered control diet plus 0.5, 1.0, 1.5 and 2.0% of CSP but no antibiotics as growth promotors. All the diets were isocaloric and iso-nitrogenous in nature. Plasma glucose and serum total cholesterol was decreased significantly (P<0.05) in the CSP supplemented groups in comparison to control group. Also, dietary supplementation of CSP resulted in increased (P<0.05) HDL and decreased (P<0.05) LDL-cholesterol. Serum triglyceride decreased significantly (P<0.05) upon CSP supplementation at 1.0% and above. Activity SGOT and SGPT decreased significantly (P<0.05) upon CSP supplementation in the diets of broiler. Relative mRNA expression of TLR2 and TLR7 of broilers was found to be enhanced (P<0.05) while that of TLR4 was down regulated in all the CSP supplemented groups in comparison to control group. Based on the findings of current study, it was inferred that coriander seed powder supplementation in the broilers diet has beneficial effects on various blood biochemical and immunological indices and can be preferred as feed additives over antibiotics.