Effect of synbiotic on growth and antioxidant status of blood in broiler chicken

Abstract

In the present study, the impact of synbiotic, compared to control treatment (CON), on growth performance and antioxidative status of broilers blood was investigated. The experiment was carried out on a total of 500 one-day-old broiler chickens of both sexes. The broilers were divided into two treatments with five replicates, based on a completely randomized design. The control treatment was fed basal diet, while experimental treatment was supplemented with synbiotic in addition of 1 g/kg of feed (SYN) in finisher period that lasted from 15 to 42 days of age. Diet supplementations with synbiotic led to increased body weight of broilers, compared to the control treatment. During the last 28 days, feed conversion ratio was significantly (P<0.05) improved in the synbiotic treatment (2.12), compared to the control treatment (2.21). The serum glutathione peroxidase, peroxidase, glutathione reductase and catalase activities were significantly higher (P<0.05), except of superoxide dismutase, in the supplemented treatment compared to the control treatment. Furthemore, there were noticed significant decreases (P<0.05) in malondialdehyde and glutathione content in the supplementary treatment. Based on the previously mentioned, it can be concluded that synbiotic can be applied as a growth promoter and as a natural antioxidant feed additive in broilers diet.

Keywords

• broiler
• synbiotic
• growth promoter
• antioxidant status