包被活性干酵母对仔猪生长性能及胃肠道菌群结构的影响研究  

Effects of coated active dry yeast on growth performance and gastrointestinal flora distribution of piglets

作　　者：徐杰 陈中平[1] 周小辉 王鸿泽 康坤[1] 廖灿青 李彪[1] XU Jie;CHEN Zhongping;ZHOU Xiaohui;WANG Hongze;KANG Kun;LIAO Canqing;LI Biao(Angel Yeast Co.,Ltd.,Yichang,Hubei Province 443003,China;Angel Bio-Agricultural Technology Co.,Ltd.,Yichang,Hubei Province 443200,China)

机构地区：[1]安琪酵母股份有限公司,湖北宜昌443003 [2]安琪生物农业科技有限公司,湖北宜昌443200

出　　处：《中国饲料》2022年第13期147-150,共4页China Feed

摘　　要：为探究包被活性干酵母在仔猪上的应用效果,本试验选取28日龄仔猪36头(杜×长×大),随机分成2个处理组,每组4个重复,每重复1栏猪,每栏4头猪。对照组饲喂基础日粮,试验组饲喂基础日粮+500 g/t的包被活性干酵母,试验期17 d。试验开始和第14天检测仔猪生长性能指标,试验结束测定胃肠道中的酵母活菌数及其他微生物的数量。结果显示:日粮中添加500 g/t的包被活性干酵母,平均日增重提高了6.8%(P>0.05),料重比降低了9.5%(P>0.05),第一周腹泻率降低57.1%(P<0.05),第二周腹泻率降低了75.1%(P<0.05);饲喂包被活性干酵母后,仔猪胃肠道各部位中酵母活菌数在10^(6)~10^(8)cfu/g,其中回肠酵母活菌数最高(>10^(8)cfu/g);仔猪回肠中大肠杆菌数量显著降低(P<0.05),盲肠中大肠杆菌有降低趋势(P<0.1)。以上结果表明,包被活性干酵母能耐受饲料制粒高温和胃肠道环境,维持较高活性,日粮中添加500 g/t包被活性干酵母能够改善仔猪生长性能,预防仔猪腹泻,且能降低肠道中的大肠杆菌数量。In order to explore the application effect of coated active dry yeast on piglets,3628-day-old piglets(Du×Chang×Da)were selected in this experiment and randomly divided into 2 treatment groups,with 4replicates in each group,1 column of pig in each replicate,and 4 pigs in each column.The control group was fed the basal diet,the experimental group was fed the basal diet+500 g/t of coated active dry yeast.The experimental period was 17 days.The number of viable yeast and other microorganisms were determined at the end of the test.The results showed that adding 500 g/t of coated active dry yeast to the diet increased the average daily weight gain by 6.8%(P>0.05),decreased the feed-to-meat ratio by 9.5%(P>0.05),and the diarrhea rate in the first week decreased by 57.1%(P<0.05),and the diarrhea rate in the second week decreased by 75.1%(P<0.05);After feeding the coated active dry yeast,the number of viable yeast in each part of the gastrointestinal tract of the piglets was 10^(6)~10^(8) cfu/g,the number of viable yeast in the ileum was the highest(>10^(8) cfu/g);The number o Escherichia coli in the ileum of piglets decreased significantly(P<0.05),and the number of Escherichia coli in the cecum showed a decreasing trend(P<0.1).The above results indicated that the coated active dry yeast could withstand the high temperature of feed pelleting and the gastrointestinal tract environment and maintain a high activity.Adding 500 g/t coated active dry yeast to the diet could improve the growth performance of piglets,preven piglets from diarrhea,and reduce the number of Escherichia coli in the gut.

关 键 词：包被 活性干酵母 仔猪 生长性能 大肠杆菌 

分 类 号：S816.7[农业科学—饲料科学]