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中文摘要：
饲喂高能、高淀粉饲粮是集约化生产中提高反刍动物生产性能的常用策略,但高精料饲粮易引起一系列的营养代谢疾病,其中以瘤胃酸中毒最为常见。反刍动物瘤胃不仅具有消化、吸收营养物质的功能,瘤胃上皮亦是重要的免疫屏障,故瘤胃健康对反刍动物至关重要。本文主要从反刍动物采食高精料饲粮时其瘤胃组织形态、瘤胃上皮适应分子机制和瘤胃微生物区系3个方面的变化进行阐述,以期为高精料饲粮条件下瘤胃适应机制的研究提供参考。
英文摘要：
Feeding a diet containing higher energy and starch level is a common strategy to improve performance in ruminant production. However,higher concentrate diets can cause the nutritional metabolic disease,especially ruminal acidosis. The rumen not only has the functions of digesting and absorbing nutrients,but also is a significant immune barrier. Thus,rumen health plays an important role for ruminants. This paper mainly elucidated the changes of morphology,molecular adaptive mechanism of rumen epithelium and microbiota of the rumen,aiming at providing some references for rumen＇s adaptive mechanism under the condition of feeding higher concentrate diets.
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