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亲生生殖抑郁症及其对皮埃特兰猪精子质量特征的影响
Gyembo Tsheten1, Birgit Fuerst-Waltl2, Christina Pfeiffer3
1Department of Livestock, Ministry of Agriculture and Livestock, Thimphu, Bhutan.
概括
亲生繁殖对牲畜生育能力产生负面影响. 基因组和血统数据显示,近亲繁殖显著降低了奥地利皮特莱恩猪的精子质量和数量,强调需要谨慎管理.
科学领域:
- 动物遗传学和动物繁殖
- 生殖生物学 生殖生物学
- 畜牧科学 畜牧科学 畜牧科学
背景情况:
- 亲生繁殖通常会对牲畜的特征产生不利影响,特别是由于亲生繁殖抑郁症而影响生殖成功和生育能力.
- 精子质量是男性生育能力的关键组成部分,其对近亲繁殖效应的敏感性需要在商业猪种群中进行详细的调查.
研究的目的:
- 在奥地利皮特兰猪中使用血统 (FPED) 和基因组 (FROH) 数据来计算内生殖系数.
- 评估内生繁殖对四个关键精子质量特征的影响:精子体积,精子数和精子运动性.
主要方法:
- 从基因组数据中使用血统信息和 homozygosity (ROH) 的运行计算出近亲繁殖系数.
- 分析了1034只皮特兰野猪的74,734只射精的精子质量特征 (精子体积,精子数量,运动性).
- 使用可重复性动物模型,对基于血统和基于基因组的同胞繁殖系数来回归精子质量特征.
主要成果:
- 基于基因组的近亲繁殖值 (FROH) 通常高于基于血统的系数 (FPED),相关性从0.186到0.357.
- 基于血统的近亲繁殖显著影响了精子运动,而基于基因组的近亲繁殖对精子体积,精子数量和运动产生了负面影响.
- 1%的FPED10增加与精子运动率下降0.231%有关,大多数内生生殖效应是有害的.
结论:
- 血统和基因组内生育都会对奥地利皮特雷恩猪的精子质量特征产生负面影响,基因组内生育显示出更广泛的影响.
- 有效管理近亲繁殖水平至关重要,以减轻严重的近亲繁殖抑郁,并保持猪种群的繁殖效率.
- 建议对近亲繁殖对生长和 litter 尺寸的影响进行进一步的研究,以全面了解其对奥地利皮特兰猪的影响.
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