饲粮纤维对猪肠道屏障功能的影响

Effect of Dietary Fiber on Intestinal Barrier Function in Pigs

肠道屏障主要包括肠道内正常菌群、黏液层、肠上皮细胞以及免疫屏障,肠道屏障功能与饲粮有着密不可分的关系。饲粮纤维是指在哺乳动物肠道内不能被其内源消化酶消化吸收的碳水化合物,通常被称为非淀粉多糖(NSP),主要包括纤维素、半纤维素、木质素和β-葡聚糖等,具有增强肠道黏膜屏障、改善微生物群落结构以及改善益生菌和致病菌的比例等作用。本文综述了饲粮纤维对猪肠道屏障功能的影响及作用机理,以期促进纤维在猪生产中被合理、有效地利用。

The intestinal barrier mainly includes normal gut bacteria,mucus layer,intestinal epithelial cells and immune barrier,whose function is closely related to dietary.Dietary fiber refers to carbohydrates that cannot be digested and absorbed by their endogenous digestive enzymes in the intestinal tract of mammals,commonly known as non-starch polysaccharides(NSP),which mainly includes cellulose,hemicellulose,lignin andβ-glucan,etc.Dietary fiber can enhance intestinal mucosal barrier,improve the structure of microbial community and improve the ratio of probiotics to pathogenic bacteria,etc.The present review summarizes the effect and mechanism of dietary fiber on intestinal barrier function of pigs for promoting the rational and effective utilization of dietary fiber in swine industry.