通过专注于糖醇度和冷速率来优化犬精液冷保存
Kazuko Ogata1,2,3, Ayaka Takeuchi1,2, Shiori Ashibe1,2
1Faculty of Agriculture, University Farm, Utsunomiya University, Tochigi, 321-4415, Japan.
Veterinary research communications
|January 22, 2025
概括
优化犬类精子冷保存需要仔细控制糖醇度和冷率. 1厘米的快速结率与3%的甘油度在解后最好保存精子质量.
科学领域:
- 兽医繁殖 兽医繁殖 兽医繁殖
- 低温生物学 低温生物学
- 精子的保存 精子的保存
背景情况:
- 狗精液冷保存对于遗传保护和辅助生殖至关重要.
- 优化冷保护剂度和冷却速度至关重要,以尽量减少冷和解期间对精子的损害.
研究的目的:
- 为了确定最佳的甘油度 (GC) 和冷速度,以提高冷解的犬精子质量.
- 评估不同GC和液 (LN2) 的结距离对精子运动性,活力和线粒体活动的影响.
主要方法:
- 狗的射精被含有不同GC的扩展剂 (0-9%) 稀释.
- 精液样本在控制距离 (1-10厘米) 的吸管中从LN2蒸汽中结,以达到不同的结速率.
- 精子运动指数 (MI),生存能力和线粒体 (MT) 活动在解后进行评估.
主要成果:
- 在3%和6%的GC与解后立即0%的GC相比,观察到更高的MI.
- 在解后的24小时内,精子的最佳活力是在1厘米LN2距离的3%GC和7厘米LN2距离的6%GC下实现的.
- 在LN2距离1厘米处以3%的GC记录了最高的线粒体活动,这表明了卓越的冷保护.
结论:
- 在这项研究中,快速结速度 (1厘米LN2距离,大约-31°C/分钟) 与3%的甘油度相结合,代表了狗精子冷保存的最佳条件.
- 这种优化的协议最大限度地减少了冰晶形成的损伤,从而提高了冷解的狗精子的质量.
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