早期补饲代乳料对仔猪回肠菌群及其代谢产物的影响

发布时间：2018-06-29 09:08

本文选题：早期补饲 + 仔猪　；参考：《畜牧与兽医》2017年03期

【摘要】：旨在研究早期补饲代乳料是否会对哺乳仔猪回肠菌群组成及其代谢产物造成影响。选取10窝杜×长×大仔猪,分为2组,每组5窝,分别为:母乳组(对照组)和饲喂母乳的同时添加代乳料组(试验组)。试验组仔猪吃母乳的同时从第4天开始添加代乳料,28日龄断奶后,饲喂相同日粮7 d。在仔猪28和35日龄时,每窝各选取一头仔猪进行屠宰取样。结果表明,与对照组相比,28日龄,试验组仔猪回肠食糜内丙酸、异丁酸浓度及丙酸占总短链脂肪酸的比例显著升高(P0.05),而乙酸占总短链脂肪酸的比例显著下降(P0.05);与对照组相比,35日龄试验组仔猪回肠食糜的p H值显著降低,回肠内乳酸浓度显著升高,厚壁菌门细菌的基因拷贝数显著增加(P0.05)。结果提示,早期补饲代乳料在没有影响仔猪回肠形态结构的前提下,会一定程度上改变回肠内的菌群结构及代谢产物,从而使回肠内环境维持在一个相对健康的状态。
[Abstract]:The aim of this study was to investigate whether early supplementation of milk substitute could affect the composition and metabolites of ileal flora in suckling piglets. Ten litters of Duroc 脳 long 脳 large piglets were divided into two groups: breast milk group (control group) and milk substitute group (experimental group). The piglets in the experimental group were fed the same diet for 7 days after weaning at 28 days of age from the 4th day after breast-feeding. At 28 and 35 days of age, one piglet per litter was slaughtered and sampled. The results showed that compared with the control group, propionic acid in the ileum chyme of the experimental group was 28 days old. The concentration of isobutyric acid and the ratio of propionic acid to total short chain fatty acids increased significantly (P0.05), while the proportion of acetic acid to total short chain fatty acids decreased significantly (P0.05). The concentration of lactic acid in ileum increased significantly, and the gene copy number of Bacillus thuringiensis increased significantly (P0.05). The results suggested that the early supplementation of milk substitute could change the flora structure and metabolites of ileum to some extent without affecting the shape and structure of ileum in piglets, so that the environment of ileum could be maintained in a relatively healthy state.
【作者单位】：南京农业大学动物科技学院;
【基金】：中央高校自主创新项目(KYRC 201402)
【分类号】：S828.5

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