摘要
益生菌是一类活的微生物,适量服用益生菌对宿主健康有益.益生菌具有抗毒素、抗致病菌和缓解腹泻的作用,能够改善肠道菌群平衡,促进营养物质的消化吸收,提高宿主免疫力.在畜禽饲粮中添加益生菌可以补充肠道微生物种群,提高动物的生产性能,恢复宿主的免疫系统功能.文章综述了益生菌的筛选标准、作用机制及其在畜禽肠道健康方面的应用进展,探讨了益生菌对机体肠道结构、免疫功能和生产性能等的影响,为益生菌在畜禽生产中的应用提供参考.
Abstract
Probiotics are a kind of living microorganisms,and taking probiotics in moderation is beneficial to the health of the host.Probiotics have the functions of antitoxin,anti-pathogenic bacteria,and diarrhea reduction,which can improve the balance of intestinal flora,promote the digestion and absorption of nutrients,and improve host immunity.Adding probiotics to livestock and poultry diets can supplement intestinal microbial population,improve animal production performance,and restore the immune system function of the host.In this paper,the screening criteria,action mechanism,and application progress of probiotics in intestinal health of livestock and poultry were summarized,and the effects of probiotics on intestinal structure,immune function,and production performance were discussed,which provided a reference for the application of probiotics in livestock and poultry production.