高精料饲粮条件下反刍动物瘤胃适应机制的解析

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。%Feeding a diet containing higher energy and starch level is a common strategy to improve perform-ance in ruminant production.However, higher concentrate diets can cause the nutritional metabolic disease, es-pecially 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 elu-cidated 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.