包膜丁酸钠对断奶仔猪肠道菌群及生长性能的影响

发布时间：2019-06-06 08:14

【摘要】：为了探索包膜丁酸钠对断奶仔猪肠道菌群及生长性能的影响。试验将60头体重相近的28日龄阉割断奶仔猪随机分为2组:A组为对照组,仅饲喂基础日粮;B组为包膜丁酸钠组,在基础日粮的基础上添加0.03%包膜丁酸钠。试验期为28d,期间检测断奶仔猪不同肠段中肠道菌群种类及数量的变化,并记录各试验组仔猪的日采食量、日增重及仔猪的腹泻情况。结果显示:与对照组相比,基础日粮中添加包膜丁酸钠后,仔猪平均日增重提高7.22%,料肉比降低2.76%,且腹泻率与腹泻指数分别降低30.71%、33.85%;检测各肠段细菌含量,显示包膜丁酸钠可显著降低回肠中大肠杆菌的数量(P0.05),增加盲肠和结肠中乳杆菌和双歧杆菌数量(P0.05);观察试验后各组小肠组织形态发现,仔猪基础日粮中添加包膜丁酸钠后,小肠绒毛结构更为完整,绒毛更长更粗壮,且绒毛呈圆指状。结果表明,基础日粮中添加0.03%包膜丁酸钠可有效提高仔猪肠道有益菌的含量,促进小肠绒毛的发育,促进仔猪饲料的转化率,并能够降低仔猪腹泻率。
[Abstract]:In order to explore the effect of coated sodium butyrate on intestinal flora and growth performance of weanling piglets. Sixty 28-day-old castrated weanling piglets with similar body weight were randomly divided into two groups: group A (control group) and group B (coated sodium butyrate group), which were supplemented with 0.03% coated sodium butyrate on the basis of basic diet. The experimental period was 28 days, during which the species and quantity of intestinal flora in different intestinal segments of weanling piglets were detected, and the daily feed intake, daily gain and diarrhea of piglets in each test group were recorded. The results showed that compared with the control group, the average daily gain of piglets increased by 7.22%, the ratio of feed to meat decreased by 2.76%, and the diarrhea rate and diarrhea index decreased by 30.71% and 33.85%, respectively. The detection of bacterial content in each intestinal segment showed that sodium butyrate could significantly reduce the number of Escherichia coli in ileum (P 0.05) and increase the number of Lactobacillus and bifidobacillus in cecum and colon (P 0.05). After observing the morphology of small intestine in each group, it was found that when sodium butyrate was added to the basal diet of piglets, the villi of small intestine were more complete, the villi were longer and stronger, and the villi were round fingers. The results showed that the addition of 0.03% coated sodium butyrate to the basic diet could effectively increase the content of beneficial bacteria in the intestine, promote the development of small intestinal villi, promote the feed conversion rate of piglets, and reduce the diarrhea rate of piglets.
【作者单位】：吉林农业大学;预防兽医学吉林省重点实验室;吉林农业科技学院;
【基金】：吉林省教育厅科学技术研究项目(2015380) 吉林省科技发展计划项目(20150623004TC)
【分类号】：S828.5

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