复合益生菌对三黄鸡生长与屠宰性能的影响OA

To explore the effects of adding compound probiotics to the diet on the rearing of Sanhuang chickens,200 one-day-old Sanhuang chickens were randomly divided into 4 groups(5 replicates per group,10 chickens per replicate).Each group was fed a basal diet supplemented with 0(control),0.5,1.0,and 1.5 g/kg of compound probiotics(Composed of Bacillus licheniformis and Bacillus subtilis),respectively.The average daily weight gain,average daily feed intake and other growth performance indicators,as well as antioxidant capacity indicators such as catalase and malondialdehyde,and slaughter performance indicators such as slaughter weight,slaughter rate,and half-carcass weight were measured for each group of chickens.The results showed that,(1)compared with the control group,the final body weight,average daily weight gain and average daily feed intake of the compound probiotics added groups were significantly increased(P<0.05),and the feed conversion ratio was significantly decreased(P<0.05).(2)compared with the control group,the levels of superoxide dismutase and total antioxidant capacity in the serum of the compound probiotics added groups were significantly increased(P<0.05),and the content of malondialdehyde was significantly decreased(P<0.05);the activity of catalase and glutathione peroxidase in the serum of the 1.0 and 1.5 g/kg compound probiotics added groups were significantly increased(P<0.05).(3)compared with the control group,the live weight,slaughter weight,half-carcass weight,half-carcass rate,breast muscle weight and leg muscle weight of the compound probiotics added groups were significantly increased(P<0.05);the full-carcass weight,breast muscle rate and leg muscle rate of the 1.0 and 1.5 g/kg compound probiotics added groups were significantly increased(P<0.05).In conclusion,compound probiotics are helpful to improve the growth performance and slaughter performance of Sanhuang chickens and enhance their antioxidant capacity.