枯草芽胞杆菌TL对断奶仔猪生长发育、肠道环境及健康状况的影响  

Effects of Bacillus subtilis TL strain on growth development,intestinal environment and health status of weaned piglets

作　　者：刘志昌 王喜亮 毕丁仁[1] 肖运才[1] 周祖涛[1] 李筱雯 LIU Zhichang;WANG Xiliang;BI Dingren;XIAO Yuncai;ZHOU Zutao;LI Xiaowen(Huazhong Agricultural University/Key Laboratory of Preventive Veterinary Medicine in Hubei Province,Wuhan 430070,China;Hubei Huada Ruier Technology Co.,Ltd.,Jingzhou 434000,China)

机构地区：[1]农业微生物学国家重点实验室/华中农业大学动物医学院/湖北省预防兽医学重点实验室,武汉430070 [2]湖北华大瑞尔科技有限公司,荆州434000

出　　处：《华中农业大学学报》2018年第3期75-81,共7页Journal of Huazhong Agricultural University

基　　金：国家重点研发计划项目(2017YFD0501000);湖北省科技支撑计划项目(2015BBA175);湖北省重大科技创新计划项目(2015ABA041)

摘　　要：选取120头杜×长×白三元杂交断奶仔猪,随机分成负对照组(基础日粮)、正对照组(基础日粮+2.5g/kg抗生素)、M1组(正对照组+150g/t抗生素)、M2组(正对照组+300g/t抗生素),试验期30d,研究枯草芽胞杆菌TL对断奶仔猪生长发育、肠道环境及健康状况的影响。结果发现:生长性能方面,与正对照组相比,M1组在体质量(断奶后30d)、平均日增重、平均日采食量方面分别提高7.81%(P<0.05)、17.14%(P<0.01)和33.10%(P<0.01),且M1组和M2组可以极显著降低断奶仔猪的腹泻率。血液指标方面,与正对照组相比,M1组血清GSH-Px、T-SOD分别提高9.0%(P<0.05)和32.78%(P<0.01),MDA降低43.71%(P<0.05),猪瘟抗体水平提高14.06(P<0.05)。肠道屏障方面,与正对照组相比,M1组可显著提高小肠绒毛高度,降低隐窝深度;与正、负对照组相比,M1组、M2组可显著提高盲肠乳酸杆菌数量,降低大肠杆菌数量。由此得出,枯草芽胞杆菌可显著提高断奶仔猪的生长性能,改善仔猪肠道环境及健康状况。An experiment was conducted for 30 d to investigate the effect of Bacillus subtilis TL on the growth development,intestinal environment and health status of weaned piglets.A total of 120 Duroc×Landrace×Yorkshire pigs were randomly divided into 4 groups,the negative control group(basal diet),positive control group(basal diet+2.5 g/kg antibiotic),M1 group(positive control group+150 g/t antibiotics)and M2 group(positive control group+300 g/t antibiotics).The results showed that the weight,average daily gain and the average daily feed intake in the M1 group increased by 7.81%(P<0.05),17.14%(P<0.01),and 33.10%(P<0.01),respectively,compared with the positive control in terms of growth performance.In addition,the diarrhea rate of weaned piglets in the M1 and M2 groups were significantly reduced.The serum GSH-Px,T-SOD and the swine fever antibody were increased by 9.0%(P<0.05),32.78%(P<0.05)and 14.06%(P<0.01),respectively,while the MDA was decreased by 43.71%(P<0.05),compared with the positive control in terms of blood index.Moreover,the small intestinal villus was significantly increased and the depth of crypt was significantly decreased compared with the positive control in terms of intestinal barrier.At the same time,the number of cecum Lactobacillus in the M1 group was significantly increased and the number of cecum E.coli were significantly reduced,compared with the positive and negative control.It was concluded that B.subtilis TL could significantly improve the growth performance,the intestinal environment and health status of weaned piglets.

关 键 词：断奶仔猪 断奶应激 枯草芽胞杆菌 生产性能 肠道屏障 

分 类 号：S828.91[农业科学—畜牧学]