枯草芽孢杆菌对哺乳期犊牛生长发育、腹泻率和血液代谢指标的影响  

Effects of Bacillus Subtilis on Diarrhea Rate,Growth Performance and Blood Metabolic Parameters of Lactating Calves

作　　者：何俊杰 魏海珠 伍振越 刘金洋 郭勇庆 邓铭[1] HE Jun-jie;WEI Hai-zhu;WU Zhen-yue;LIU Jin-yang;GUO Yong-qing;DENG Ming(College of Animal Science,South China Agricultural University,Guangzhou 510642)

机构地区：[1]华南农业大学动物科学学院,广州510642

出　　处：《中国奶牛》2024年第9期52-56,共5页China Dairy Cattle

基　　金：基于精准遗传评估的雷琼牛育种核心群构建及育种技术集成与创新(2022-XPY-00-010);陆丰牛选育种及配套技术服务;肉牛繁育与标准化饲养配套技术服务。

摘　　要：本试验旨在评估日粮中添加不同剂量枯草芽孢杆菌对哺乳期犊牛腹泻率、生长性能和血液代谢参数的影响,为枯草芽孢杆菌在犊牛生产中的科学利用提供参考。选取体重相近(39.44±1.58kg)、健康状态良好的4日龄荷斯坦母犊牛48头,随机分为3组,每组16头,分别在奶中添加枯草芽孢杆菌(≥5×10^(9)CFU/g)0g/(头·d)(对照组)、6g/(头·d)和12g/(头·d),试验期40d。结果表明,试验处理未影响犊牛的平均日增重(P>0.05);与对照组相比,牛奶中添加6g和12g枯草芽孢杆菌的犊牛腹泻率显著降低(P<0.01);6g组犊牛血清总蛋白含量显著高于对照组和12g组(P<0.05),12g组犊牛血清尿素氮的含量显著低于对照组(P<0.05);与对照组相比,6g组犊牛血清谷胱甘肽过氧化物酶活性显著提高,6g组和12g组超氧化物歧化酶活性显著提高(P<0.05)。综上可知,哺乳犊牛饲喂枯草芽孢杆菌可降低犊牛腹泻率、提高机体抗氧化能力,以12g/(头·d)的添加剂量效果较好。The purpose of this experiment was to evaluate the effects of different doses of Bacillus subtilis on diarrhea rate,growth performance and blood metabolic parameters of lactating calves,and to provide reference for the scientific utilization of Bacillus subtilis in calf production.Forty-eight 4-day-old Holstein female calves with similar body weight(39.44±1.58kg)and good health were selected and randomly divided into 3 groups with 16 calves in each group.Bacillus subtilis(≥5×10^(9)CFU/g)0g/d/head(control group),6g/d/head and 12g/d/head were added to the milk for 40 days.The results showed that the experimental treatment did not affect the average daily gain of calves(P>0.05);compared with the control group,the diarrhea rate of calves supplemented with 6g and 12g Bacillus subtilis in milk was significantly reduced(P<0.01);The serum total protein content of calves in 6g group was significantly higher than that in control group and 12g group(P<0.05),and the serum urea nitrogen content of calves in 12g group was significantly lower than that in control group(P<0.05).Compared with the control group,the activity of glutathione peroxidase in serum of calves in 6g group was significantly increased,and the activity of superoxide dismutase in 6g group and 12g group was significantly increased(P<0.05).To sum up,feeding lactating calves with Bacillus subtilis can reduce the diarrhea rate of calves and improve the antioxidant capacity of the body.The effect of adding 12g/d/head is better.

关 键 词：枯草芽孢杆菌 犊牛 腹泻 生化指标 抗氧化能力 

分 类 号：S858.23[农业科学—临床兽医学]