短期运输中的年龄相关差异马匹的压力反应
Erica T Jacquay1, Patricia A Harris2, Amanda A Adams3
1Department of Veterinary Science, MARS EQUESTRIAN Scholar, M.H. Gluck Equine Research Center, University of Kentucky, Lexington, KY.
Journal of equine veterinary science
|July 3, 2023
概括
运输压力会对马产生影响,但年龄会影响它们的生理反应. 老马在运输后表现出明显的代谢变化,特别是胰岛素水平,与年轻马不同.
科学领域:
- 马类生理学 马类生理学
- 动物应激反应的压力反应.
- 兽医科学是一门兽医科学.
背景情况:
- 短途旅行可能会引起马的压力.
- 已知马类免疫和代谢系统的年龄相关变化.
- 之前没有研究过与年龄相关的马匹对运输压力的反应差异.
研究的目的:
- 评估年龄如何影响马匹对短期运输压力的生理和免疫反应.
- 为了比较运输后年轻和老年马之间的压力标志物.
主要方法:
- 11只母马 (5岁,6岁) 进行了1小时20分钟的运输.
- 在运输前和后测量了生理参数 (心率,温度),激素水平 (皮质醇,ACTH,胰岛素) 和免疫标记 (细胞因子基因表达,IFNγ和TNFα产生).
- 用于采样的多个时间点,从基线到运输后8天.
主要成果:
- 皮质醇,唾液皮质醇和心率随着运输而增加,不论年龄.
- 年轻的马匹与老年马匹相比,呈现出更高的直肠和尾下温度.
- 在老年马和运输后,上皮质激素 (ACTH) 的水平升高.
- 与年轻马相比,老年马在运输后的胰岛素增加明显.
结论:
- 年龄不会影响皮质醇或心率对短期马匹运输的反应.
- 老年马对运输压力表现出更明显的胰岛素反应.
- 年龄会影响代谢,但不影响马匹在短途旅行中的荷尔蒙应激反应,而不是直接的荷尔蒙应激.
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