Role of dietary leaf extract on productive parameters, humoral immunity and lipid peroxidation in broiler chicks.

The plants originated from an agroforestry system have gained immense importance in livestock health and production. The trial was planned to examine the effects of leaf extract (MLE) supplementation on the performance, blood metabolites, immunity and lipid peroxidation in broiler chicks. A total of 350 day old broiler chicks were divided into negative control (MLE), positive control (antibiotic; AB-enro), supplementation at the concentration of 60 (MLE), 90 (MLE) and 120 mL/L (MLE) of drinking water. Performance parameters such as feed intake, body weight and feed conversion ratio, antibody titer against Newcastle disease and infectious bronchitis, heterophils and lymphocytes ratio, blood glucose, protein, and malanodialdehyde were determined. The results showed that carcass yield was significantly ( < 0.05) higher in MLE followed by MLE and AB-enro. MLE and MLE showed significant ( < 0.05) increase in antibody titer against New-castle (ND) and Infectious-bronchitis (IB) respectively. Significantly ( < 0.05) lower Heterophil to lymphocyte (H:L) ratio was observed in MLE and MLE compared to the negative control. Significantly ( < 0.05) lower blood glucose concentration and significantly ( < 0.05) higher mean serum protein value were found in MLE. The MLE showed significantly ( < 0.05) lower concentration of malanodialdehyde (MDA). It was concluded that leaf extract supplementation at the concentration of 120 mL/L of drinking water improved carcass yield, immunity, blood metabolites and reduced lipid peroxidation in broiler chicks.Highlights improved the carcass yield of broiler is an excellent immune potentiating agent in broiler enhanced the antioxidant potential of broiler.