饲用凝结芽孢杆菌对肉鸡养分表观代谢率及血清生化指标的影响

Effects of Bacillus coagulans on Apparent Nutrients Digestibility and Serum Biochemical Indexes in Broiler Chickens

试验旨在研究饲用凝结芽孢杆菌对肉鸡养分表观代谢率及血清生化指标的影响。选取1日龄AA肉鸡240只,随机分成对照组、抗生素组、凝结芽孢杆菌组3个处理组。对照组饲喂基础日粮,抗生素组和凝结芽孢杆菌组分别在基础饲粮中添加土霉素(300 g·t^(-1))和凝结芽孢杆菌(1×10^(7)cfu·g^(-1)),试验期21 d,检测养分表观代谢率及血清生化指标。结果显示:与对照组比,凝结芽孢杆菌组肉鸡平均日增重、饲料转化效率、养分干物质和粗蛋白的表观代谢率显著提高(P<0.05),且与抗生素组比差异不显著(P>0.05);三个处理组的平均日采食量差异不显著(P>0.05);凝结芽孢杆菌组肉鸡血清球蛋白含量显著大于对照组和抗生素组(P<0.05),且凝结芽孢杆菌组与抗生素组其他血液生化指标差异均不显著(P>0.05)。以上结果表明,饲用凝结芽孢杆菌通过促进营养物质消化,改善了幼龄肉鸡生长性能。

The objective of this test was to study the effects of a probiotics Bacillus coagulans on the apparent nutrients digestibility and the serum biochemical index in broiler chickens. A total of 240, 1 d AA broiler chickens were divided into three treatment groups. The control group was fed with basal diet, and the antibiotic group and Bacillus coagulans group were fed with basal diet plus oxytetracycline(300 g·t^(-1)) or Bacillus coagulan(1×10^(7)cfu·g^(-1)) separately. The apparent nutrients digestibility and serum biochemical indexes were determined during the experimental period of 21 days. The results showed that the Bacillus coagulans group had the increased(P<0.05),ADG, G/F ratio, the apparent digestibilities of dry matter and crude protein compared to the control group, and was similar(P>0.05) with the antibiotic group(P<0.05). The ADFI was no significant difference(P>0.05) among the three groups. The Bacillus coagulans group had the greater serum globulin content(P<0.05) than the other two groups. Moreover, other serum biochemical indexes between the Bacillus coagulans group and the control group were no significant differences(P>0.05). In conclusion, the probiotics Bacillus coagulans improved the broiler chickens growth performance by upgrading nutrients digestibility.