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围绕多胞胎霍尔斯坦奶牛缺血症的生理学的周围分娩序列:一项前性队列研究

J A Seminara¹, K D Bach¹, S Mann¹

¹Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14850.

Journal of dairy science

|February 16, 2026

概括

产后乳牛患有失质血症,在产后48小时内减少料摄入量和反. 这种早期的生理不适应是低血清 (tCa) 之前的,并影响了牛奶产量.

科学领域:

兽医医学兽医医学兽医医学
动物科学动物科学
乳牛生理学乳牛生理学

背景情况:

缺血症,定义为产后血清总 (tCa) 低,影响奶牛的生产力和健康.
导致失血症的精确生理序列仍然不太清楚.
早期识别与失血症相关的生理变化可以为管理策略提供信息.

研究的目的:

为了确定与乳牛产后失血症相关的生理变化的时间序列.
为了研究早期哺乳期的料摄入量,反,哈普托格洛宾和血清水平之间的关系.

主要方法:

一项前性队列研究跟踪了45只多的霍尔斯坦牛,从产前14天到产后14天.
记录了每日干物质摄入量 (DMI),反时间和牛奶产量.
血清样本在多个时间点分析了tCa,Haptoglobin和BHB度.

主要成果:

患有失血症的奶牛的DMI显著降低 (从分娩后24-48小时开始) 和反时间 (从分娩后40小时开始).
经产后64小时观察到异血症母牛的哈普托格洛宾度升高,在96小时之前的tCa下降.
在产后的前14天和10周内,在患有失血症的奶牛中观察到较低的牛奶产量.

结论:

乳牛的产后胆血症是乳牛分娩后不久前减少料摄入量和反.
这种生理事件的序列为早期干预提供了一个潜在的窗口.
了解这些早期变化可以帮助改善奶牛的健康和生产力.

关键词:

和是最重要的.这是一种炎症炎症炎症炎症.摄入量摄入量摄入量杂杂杂是一种

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