PDF(Pubmed)
Abstract：
The importance of dietary fiber (DF) in animal diets is increasing with the advancement of nutritional research. DF is fermented by gut microbiota to produce metabolites, which are important in improving intestinal health. This review is a systematic review of DF in pig nutrition using in vitro and in vivo models. The fermentation characteristics of DF and the metabolic mechanisms of its metabolites were summarized in an in vitro model, and it was pointed out that SCFAs and gases are the important metabolites connecting DF, gut microbiota, and intestinal health, and they play a key role in intestinal health. At the same time, some information about host-microbe interactions could have been improved through traditional animal in vivo models, and the most direct feedback on nutrients was generated, confirming the beneficial effects of DF on sow reproductive performance, piglet intestinal health, and growing pork quality. Finally, the advantages and disadvantages of different fermentation models were compared. In future studies, it is necessary to flexibly combine in vivo and in vitro fermentation models to profoundly investigate the mechanism of DF on the organism in order to promote the development of precision nutrition tools and to provide a scientific basis for the in-depth and rational utilization of DF in animal husbandry. KEY POINTS: • The fermentation characteristics of dietary fiber in vitro models were reviewed. • Metabolic pathways of metabolites and their roles in the intestine were reviewed. • The role of dietary fiber in pigs at different stages was reviewed.
摘要：
随着营养学研究的深入,膳食纤维(DF)在动物日粮中的重要性日益增加。DF由肠道微生物群发酵产生代谢产物，这对改善肠道健康很重要。本综述是使用体外和体内模型对DF在猪营养中的作用进行的系统综述。在体外模型中总结了DF的发酵特性及其代谢产物的代谢机制。并指出SCFA和气体是连接DF的重要代谢产物，肠道菌群，和肠道健康，它们在肠道健康中起着关键作用。同时,一些关于宿主-微生物相互作用的信息可以通过传统的动物体内模型得到改善，产生了对营养素最直接的反馈，证实了DF对母猪繁殖性能的有益作用，仔猪肠道健康,和种植猪肉的质量。最后,比较了不同发酵模式的优缺点。在未来的研究中,有必要灵活结合体内外发酵模型，深入研究DF对生物体的作用机理，以促进精准营养工具的发展，为DF在畜牧业中的深入、合理利用提供科学依据。要点：•综述了膳食纤维体外模型的发酵特性。•综述了代谢物的代谢途径及其在肠道中的作用。•综述了膳食纤维在猪不同阶段的作用。
