Effects of Clostridium butyricum on growth performance,slaughter performance and immune function of Zhuanghe Dagu chickens
To explore the effects of Clostridium butyricum on growth performance,slaughter performance and immune function of Zhuanghe Dagu chickens.A total of 450 one-day-old Zhuanghe Dagu chickens,half male and half female,were randomly divided into 3 groups with 6 replicates per group and 25 chickens per replicate.The control group was fed a basal diet,the experimental group Ⅰ was fed a basal diet+1.5x107 CFU/kg(500 mg/kg)Clostridium butyricum,and the experimental group Ⅱ was fed a basal diet+3x107 CFU/kg(1000 mg/kg).The experiment lasted for 21 days.The results showed as follows:compared with the control group,the average daily feed intake and the ratio of feed to gain of experimental groups were decreased(P＞0.05),and the average daily gain of group Ⅱ and body weight of age 21 were highly significantly increased by 11.5％and 18.5％,respectively(P＜0.01);Pectoral rates in the test group were significantly increased by 7.7％and 9.5％,respectively,compared with the control group(P＜0.05);Compared with the control group,the thymus index and IgG content of Zhuanghe Dagu chickens in test group Ⅱ were significantly higher 17.2％and 78.1％(P＜0.01),and the spleen index and bursa index were significantly increased by 11.4％and 50.0％,respectively(P＜0.05).Therefore,dietary addition of Clostridium butyricum could improve growth performance,slaughter performance and immune function of Zhuanghe Dagu chickens.
Zhuanghe Dagu chickensClostridium butyricumgrowth performanceslaughter performanceimmune organ index
万方数据
维普
