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身体温度和非孕期早期哺乳期奶牛的行为之间的关系
Maria Elisa Montes1, Mercedes Brunton1, Adrianna Mann1
1Department of Animal Sciences, Purdue University, West Lafayette, IN 47907.
JDS communications
|July 31, 2023
概括
奶牛的体温节奏与养行为没有很强的联系. 然而,奶牛和客厅活动可能会影响早期哺乳期母牛的次要每日体温模式.
科学领域:
- 动物科学动物科学
- 乳牛生理学 乳牛生理学
- 行为科学 行为科学
背景情况:
- 核心体温节奏是主生物钟的关键指标.
- 早期哺乳期的奶牛表现出被破坏的24小时体温节律.
- 这项研究研究了日常行为和体温波动之间的关系.
研究的目的:
- 为了确定日常行为波动,特别是食,是否与奶牛的体温波动相关.
- 分析特定行为对体温模式的影响.
主要方法:
- 在11只荷尔斯坦牛中,观察行为和记录核心体温每10分钟一次,持续48小时.
- 使用数据记录器 (iButtons) 进行持续的温度监测.
- 应用了共因子模型和逻辑回归来分析数据.
主要成果:
- 平均体温更适合一个二元共因子模型,而不是一个单元共因子模型.
- 与母乳养 (0.16) 相比,母乳养显著增加了体温升高的可能性 (0.94).
- 身体温度波动与养行为没有直接关联.
结论:
- 每天的养行为似乎没有驱动乳牛体温的二次节奏.
- 哺乳,相关活动或客厅环境可能会影响体温模式.
- 局限性包括短暂的观察期和小样本大小,需要进一步研究.
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