围产期是奶牛生产周期中较为关键的时期,此阶段奶牛机体容易出现能量负平衡、免疫力低下等问题。蛋氨酸作为奶牛机体内具有限制性的必需氨基酸,不仅发挥营养调控作用,还具有调节奶牛繁殖能力、免疫能力和生长性能等功能。该文对围产期补充过瘤胃蛋氨酸对奶牛生产性能和免疫能力影响的研究进展进行阐述,以期为过瘤胃蛋氨酸产品在奶牛围产期的科学应用提供理论参考。
The peripartal period is a critical period in the production cycle of dairy cows. At this stage, the body of dairy cows is prone to problems such as negative energy balance and low immunity. Methionine is a restrictive essential amino acid in the body of dairy cows. It not only plays a role in nutritional regulation, but also regulates the reproductive capacity, immunity and growth performance of dairy cows. In this paper, the research progress of the effects of rumen protected methionine supplementation on the production performance and immunity of dairy cows during perinatal period was reviewed, in order to provide a theoretical reference for the scientific application of rumen - protected methionine products in dairy cows during peripartal period.
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