养殖对绵羊短尾的作用对生殖的参数和绵羊的发育的影响
Hannah Hümmelchen1, Henrik Wagner1, Kerstin Brügemann2
1Veterinary Clinic for Reproductive Medicine and Neonatology, Justus-Liebig University of Giessen, Giessen, Hessen, Germany.
Veterinary medicine and science
|January 10, 2025
概括
选择性繁殖对短或长尾羊的选择性繁殖没有显著影响繁殖或羔羊的表现. 这项研究没有发现与尾巴长度繁殖相关的关键动物福利或生产率指标的不利影响的证据.
科学领域:
- 动物科学动物科学
- 生殖生物学 生殖生物学
- 动物福利 动物福利
背景情况:
- 绵羊的尾巴对接是一种常见的做法,与福利问题有关.
- 伦理考虑正在推动关于尾部对接替代方案的讨论.
- 对尾巴长度进行选择性育种是一个潜在的福利友好的方法.
研究的目的:
- 调查繁殖羊对短尾 (ST) 与长尾 (LT) 的影响.
- 评估对母羊生殖参数的影响.
- 为了评估羊羔的表现和健康结果,年龄在14周.
主要方法:
- 149只母羊与被选为ST或LT的公羊进行交配.
- 监测怀孕率,流产和孕激素水平 (P4).
- 记录羔羊的体重,长度, litter size,性别,死胎,活力,发病率和死亡率.
主要成果:
- 在ST和LT组之间,孕激素水平或胎盘体重没有显著差异.
- 怀孕率在ST (75.71%) 与LT (87.34%) 相比略低,具有边际意义 (p=0.07).
- LT羔羊的体重增加略有显著 (p=0.09);在羔羊的表现或健康状况上没有其他显著差异.
结论:
- 选择性繁殖对绵羊的尾巴长度似乎不会对生殖参数产生负面影响.
- 羊羔的表现和健康指标在很大程度上不受ST或LT的繁殖的影响.
- 这种育种策略显示出作为尾部对接的替代品的潜力,而不会影响生产力.
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