影响冷保存精液繁殖母马怀孕率的因素
L Pasch1, D Stefanovski2, T Dobbie2
1Rhinebeck Equine, 26 Losee Lane, Rhinebeck, NY 12572.
Journal of equine veterinary science
|August 16, 2024
概括
繁殖剂量的冷保存的马精液吸管数量没有影响怀孕率. 在排卵后3-6小时内繁殖的母马也没有显示出结果的差异.
科学领域:
- 生殖生物学 生殖生物学
- 马类科学 马类科学
- 兽医医学 兽医医学 兽医医学
背景情况:
- 传统上,马精液的育种剂量包括多个吸管 (例如8×0.5毫升).
- 深角人工授精趋向于减少每剂量吸管的数量,甚至只剩下一个吸管.
- 影响冷保存精液怀孕成功的因素需要进一步调查.
研究的目的:
- 为了评估每种繁殖剂量的冷保存的马精液吸管数量对马怀孕结果的影响.
- 评估各种母马,马和管理因素对怀孕成功的影响.
- 为了确定冷保存精液与排卵相对的最佳授精时间.
主要方法:
- 以冷保存的马精液受精的母怀孕后果的回顾性分析.
- 基于每剂量吸管数量 (包括单吸管剂量) 的怀孕率的比较.
- 评估包括授精时间 (排卵前/后,与排卵相比的小时),子宫内膜采样,细菌培养结果和解后的精子运动等因素.
主要成果:
- 没有观察到每种育种剂量的吸管数量对怀孕结果的显著影响.
- 在一次排卵后受精的母马与一次排卵前和一次排卵后受精的母马之间,怀孕率没有差异.
- 在0-3小时排卵后进行授精,与0-6小时排卵后进行授精,对妊娠结果没有任何好处.
- 诸如子宫内膜采样,细菌生长,子宫液,子宫内膜炎治疗和解后运动等因素与怀孕结果没有相关性.
结论:
- 这项研究表明,该行业的自我选择过程,仅以降低剂量的高生育性精液进行营销.
- 在排卵后的6小时窗口内授精马匹与更窄的3小时窗口一样有效.
- 检查的马和管理因素并没有显著影响冷保存精液的怀孕结果.
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