对埃及水牛公牛的精液特征遗传参数的估计
Mohamed M I Salem1, Amin M S Amin2, Ayman F Ashour2
1Department of Animal and Fish Production, Faculty of Agriculture, University of Alexandria, Alexandria, 21545, Egypt. mmisalem@gmail.com.
Tropical animal health and production
|July 10, 2023
概括
评估了埃及水牛公牛的精液质量,显示了大量运动性,精子活力和精子度的高遗传性. 对质量运动的直接选择可以改善整体精液质量和生育能力.
科学领域:
- 动物科学动物科学
- 生殖生物学 生殖生物学
- 遗传学 遗传学 是一个
背景情况:
- 精液的特征对于动物人工授精的成功至关重要.
- 了解影响精液质量的遗传和环境因素对于育种计划至关重要.
- 埃及水牛公牛需要特殊的管理才能达到最佳的生殖性能.
研究的目的:
- 为了描述埃及水牛公牛的关键精液特征.
- 评估非遗传因素 (采集年,季节,公牛年龄) 对精液特征的影响.
- 估计精液特征之间的遗传性,重复性和遗传相关性.
主要方法:
- 分析了来自26只埃及水牛公牛的7761个射精 (2009-2019).
- 使用贝叶斯推理应用单特征和双变重复性动物模型.
- 估计变异组件,遗传性,重复性和遗传相关性.
主要成果:
- 年份和公牛年龄显著影响了大多数精液特征;季节没有显著影响.
- 对于质量运动 (0.52),精子生存能力 (0.51) 和精子度 (0.49) 观察到高遗传率估计.
- 在质量运动性,精子可活性和精子度之间发现了强烈的正基因相关性.
结论:
- 质量运动性,精子活力和精子度是埃及水牛公牛的高度遗传特征.
- 有利的遗传相关性表明,对质量运动的选择可以同时提高精子的生存能力和度.
- 针对群体运动性的直接选择是一种有前途的策略,可以提高这种品种的精液质量和生育能力.
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