Effect of replacing antibiotics using multi-enzyme preparations on production performance and antioxidant activity in piglets

摘要

The study was conducted to investigate the effects of replacing antibiotics using multi-enzyme preparations on growth performance,coefficient of total tract apparent digestibility,digestive enzyme activity,and antioxidant property in piglets.A total of 160 piglets((21.35±0.22)kg)were randomly assigned to five dietary treatments:1)basal diet supplemented with antibiotics(AC),2)antibiotic diet supplemented with 0.5 g kg^(–1) multi-enzyme preparations(AC+0.5EP),3)antibiotic diet supplemented with 1.5 g kg^(–1) multi-enzyme preparations(AC+1.5EP),4)basal diet supplemented with a half dosage of antibiotics and 1.5 g kg^(–1) multi-enzyme preparations(AH+1.5EP),and 5)basal diet supplemented with 1.5 g kg^(–1) multienzyme preparations(BC+1.5EP).The results showed that AC+1.5EP significantly improved the feed efficiency,apparent digestibility of ether extract(EE)and crude ash(CA),lipase activity in pancreas and duodenum content,maltase and lactase activity in jejunum and ileum mucosa,glutathione peroxidase(GSH-Px)concentration in serum and liver,and decreased malondialdehyde(MDA)concentration in serum and liver compared with piglets receiving AC(P0.05)but had lower MDA concentration than piglets receiving AC(P<0.05).The apparent digestibility of EE and crude fiber(CF),duodenal lipase activity,jejunum mucosa maltase,and ileum mucosa lactase activity of piglets receiving AH+1.5EP or BC+1.5EP were significantly improved compared with piglets receiving AC(P<0.05).These results indicated an additive growth promotion effect between antibiotics and multi-enzyme preparations on piglets,and the multi-enzyme preparations may be used as substitutes for antibiotics for improving piglet production performance and health status.