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产后奶牛的毛皮醇度及其与牛奶生产参数的关联

Winfried Otten¹, Susen Heimbürge¹, Armin Tuchscherer²

¹Institute of Behavioural Physiology, Research Institute for Farm Animal Biology (FBN), Wilhelm-Stahl-Allee 2, 18196 Dummerstorf, Germany.

Domestic animal endocrinology

|May 28, 2023

概括

乳牛的毛皮质醇度 (HCC) 在哺乳期增加,与牛奶生产特征和生理压力相关. 黑头发更适合进行压力评估,因为它具有较高的皮质醇水平和抗光降解能力.

科学领域:

动物科学动物科学
生理学生理学生理学
内分泌学在内分泌学.

背景情况:

头发皮质醇度 (HCC) 为评估长期压力提供了一种微创方法.
奶牛的哺乳期和孕期涉及生理变化,这些变化可能会影响HCC,独立于外部压力.

研究的目的:

为了研究乳牛在不同哺乳期的不同阶段的HCC.
为了确定牛奶生产特征与头发皮质醇水平之间的关系.

主要方法:

从41头荷尔斯坦弗里西亚奶牛收集了自然和再生的头发样本,从分娩到产后300天的间隔每隔100天.
分析了头发样本以检测皮质醇度.
评估了HCC与牛奶生产特征之间的关联 (累计产量,尿素,体细胞计数).

主要成果:

自然头发中的皮质醇度在分娩后增加,在分娩后200天达到顶峰.
在300天后,累积牛奶产量和HCC之间观察到正相关性.
牛奶尿素和体细胞计数在分娩200天后与HCC显示出正相关性.

结论:

哺乳期的生理需求,包括代谢压力和炎症,与奶牛的高HCC有关.
黑头发比白头发具有更高的皮质醇度,这表明由于光降解抵抗力,它更适合应激监测.

关键词:

牛群是牛群,牛群就是牛群.头发皮质醇是一种皮质醇.哺乳期哺乳期是一个牛奶产量牛奶产量人体细胞计数的体细胞计数.

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