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展望: 产后过渡性低血症 - 一种高产奶牛的哺乳诱导现象

Laura L Hernandez¹, Jessica A A McArt²

¹Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706.

Journal of dairy science

|August 29, 2023

概括

乳牛产后低血症并不总是有害的. 高产牛的过渡性低血症是一种适应,而不是疾病,并不总是需要治疗.

科学领域:

兽医医学兽医医学兽医医学
动物营养动物营养
乳制品科学乳制品科学

背景情况:

牛奶热 (临床低血症) 在乳牛中具有历史意义,由于哺乳期的消耗引起.
虽然在美国由于产前营养,临床乳热很少见,但亚临床低血症影响了50%的产后奶牛.
一个普遍的信念是,所有产后低血症都是有害的,导致广泛的治疗策略.

研究的目的:

在产后奶牛中区分亚临床低血症的类型.
挑战所有低血症都需要治疗的假设.
研究乳腺和分娩后立即因素在平衡中的作用.

主要方法:

产后低血症的分类:暂时性,持续性或延迟性.
分析低血症类型,牛奶产量和疾病发病率之间的关系.
探索影响分娩后调节的因素.

主要成果:

过渡性低血症与高牛奶产量有关,是哺乳期适应的一部分.
持久或延迟的低血症与疾病和减少的牛奶产量有关.
乳腺活动对于的调节至关重要,但每个牛的反应各不相同.

结论:

并非所有产后低血症都是有害的;高生产者的过渡性形式是适应性的.
对所有亚临床低血症病例的治疗可能不必要或有益.
干物质摄入,炎症和免疫激活可能会影响分娩后的调节.

关键词:

缺血症 (dyscalcemia) 是一种疾病.过低血症 (hypocalcemia) 的情况过渡性低血症是短暂的

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