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在热带和亚热带气候下养的纯血马的孕期长度

Gabriela C Silva¹, Carlos E W Nogueira¹, Rebeca Scalco²

¹Departamento de Clínicas Veterinária, Faculdade de Veterinária, UFPel, Pelotas, RS, Brazil.

|December 25, 2024

概括

纯血马的孕期长度主要取决于母的月份,母的年龄和母的年龄. 环境和母体因素显著影响马的怀孕时间.

科学领域:

马类繁殖马类繁殖马类繁殖
动物科学动物科学
兽医医学兽医医学兽医医学

背景情况:

马的孕期长度 (GL) 呈现出显著的变化.
多种因素,包括母亲,胎儿和环境的影响,影响GL.
了解这些因素对于纯种繁殖管理至关重要.

研究的目的:

研究和量化气候,母体,胎儿和环境变量对纯血马的怀孕时间的影响.
在热带和亚热带气候下确定妊娠时间的主要决定因素.
为优化马匹育种策略提供数据.

主要方法:

追溯分析了巴西9个繁殖季的704个怀孕情况.
使用逐步和多重回归模型进行统计分析.
包括变量:小月/年,母马年龄/平价,小的性别和温度湿度指数 (THI).

主要成果:

幼的月份和年份被确定为孕期长度的主要决定因素.
在多重回归分析中,马年龄和幼年年龄被列为最重要的因素.
幼的性别,均等性和THI对GL的影响较小,但在统计学上显著.

结论:

纯血马的怀孕时间是环境,母体和胎儿因素之间的复杂相互作用的结果.
幼月,母马年龄和幼年龄是GL的最关键的预测因素.
这些发现为改善热带和亚热带地区的繁殖管理实践提供了宝贵的见解.

关键词:

气候因素气候因素摄影周期的光学周期马的马匹马的马匹温度-湿度指数是一个指数.

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