饲粮纤维影响猪肠道健康的研究进展

肠道健康包括有效的营养物质吸收、稳定的肠道微生物群落及健全的免疫功能等多个方面。肠道的健康状况决定了动物的健康状况。肠道健康取决于饲粮、肠道黏膜和肠道微生物群落3个主要方面。饲粮纤维是由纤维素、半纤维素、果胶和木质素等组成的成分和结构复杂的混合物,具有改善肠道营养物质吸收、降低肠道环境p H、改变有益菌与潜在致病菌比例、优化肠道微生物群落组成及加强黏膜屏障作用等功能。来源不同和理化性质相异的饲粮纤维对肠道健康的影响及作用机理并不一致。本文就饲粮纤维的分类、理化性质及其对肠道健康影响的研究进展进行综述,以促进饲粮纤维在猪饲粮生产上的进一步广泛合理利用。

Research Progress of Dietary Fiber Affects Gut Health of Pigs

Gut health,which influences cffective nutrient absorption,stable intestinal microbial community and good immune function and so on.The gut health depends on diet,intestinal mucous membrane and intestinal microbial community.Dietary fiber (DF) is a mixture with complex composition and structure such as ellulose,hemicellulose,pectin and lignin and so on.DF may have positive effects such as to improve intestinal nutrients absorption,decrease intestinal pH,ameliorate the proportion of beneficial and potentially pathogenic bacteria,optimize intestinal microbial community composition and enhance mucosal barrier function and so on.The physiological impact of DF will be determined by the fiber properties and may differ considerably between fiber sources.This review summarized classification and characteristics of DF,and its influence on nutrition and immunologic function with a goal to promote dietary fiber utilization in pig feed industry.