Abstract: Since the prohibition of antibiotic additives in feed，livestock and poultry farming has entered the antibiotic?free era，in which intestinal diseases pose serious threats to animal health. Meanwhile，various external stressors can induce suboptimal health or disease states in animals，thereby compromising healthy breeding practices and reducing production efficiency. Due to their natural advantages，plant extracts have emerged as a major focus in research and applications aimed at replacing antibiotics in livestock and poultry production. However，systematic and comprehensive knowledge regarding the active components of plant extracts and their mechanisms in supporting intestinal health remains limited，which significantly constrains the effective application of bioactive plant extracts in healthy animal farming. This review summarizes research conducted over the past decade on the role of plant extracts in animal intestinal health，aiming to provide a theoretical reference for the further development and utilization of plant extracts in sustainable livestock and poultry production.

Key words: Plant extracts；Active ingredients；Animal husbandry；Intestinal health

摘要： 自抗生素禁止在饲料中添加，畜禽养殖进入无抗时代以来，肠道疾病的发生会使得畜禽健康面临巨大的威胁，同时多种外界刺激因素都会致使动物生长处于亚健康或疾病状态，进而影响畜禽的健康养殖并降低养殖生产效益。植物提取物因其独特的天然优势，已成为畜禽养殖过程中替代抗生素的研究与应用重点。然而，目前对于植物提取物的活性成分以及在畜禽肠道健康发挥作用的机制仍缺乏系统全面的认知，这极大的影响了植物提取物有效活性成分在畜禽健康养殖领域的应用。该文主要总结了近十年来植物提取物对于动物肠道健康方向的研究，以期为促进植物提取物在畜禽健康养殖过程中全面的开发和利用提供理论参考。

关键词: 植物提取物；活性成分；动物养殖；肠道健康