繁殖母猪的日间温度节奏:在断奶后的雌性期和雌性期之间的差异
P Sánchez-Giménez1, A Martínez-Nicolas2,3, J A Madrid2,3
1Agropor SL, Las Torres de Cotillas, Murcia, Spain.
Porcine health management
|May 22, 2024
概括
季节性变化显著影响母猪体温的昼夜节律,特别是在夏季. 极端的高温会影响温度模式和与卵巢相关的强度,影响繁殖母猪的管理.
科学领域:
- 动物生理学 动物生理学
- 时间生物学 时间生物学
- 生殖生物学 生殖生物学
背景情况:
- 哺乳动物的昼夜节律调节生理事件,包括体温.
- 身体温度节律受到环境因素的影响,但对繁殖母猪的研究是有限的.
- 了解这些节奏对于母猪健康和生殖效率至关重要.
研究的目的:
- 为了确定断奶后母猪体温的昼夜参数.
- 调查这些参数的季节性变化,特别是在期.
- 评估温暖气候对母猪温度节奏的影响.
主要方法:
- 在不同季节中监测断奶后母猪的体温.
- 使用统计方法分析昼夜参数,包括COSINOR.
- 关联身体,阴道和环境温度.
主要成果:
- 在温度稳定性,碎片化和周期长度方面观察到显著的季节性差异.
- 夏季显示出明显的昼夜参数变化,特别是在温度上.
- 在夏季,在雌性繁殖期间注意到阴道温度升高,在所有季节的雌性繁殖日均有更高的强度.
结论:
- 季节性影响,特别是极端的夏季条件,显著改变母猪昼夜温度节奏.
- 雌激期和排卵期的荷尔蒙事件增强了温度节律的稳定性,独立于天气.
- 夏季加剧了这些影响,影响了母猪生理学和潜在的繁殖成功.
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