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
维普
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