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在整个妊娠期间,雌羊阴道微生物群的时间变化.

Mackenzie S Cassas1, Lucille C Jonas1,2, Chiron J Anderson1,2

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在怀孕期间,母羊的阴道微生物组发生了显著的变化,在早期,过渡期和晚期怀孕期间观察到明显的细菌转移. 这些变化可能与荷尔蒙波动有关,并可能为羊的繁殖成功提供见解.

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科学领域:

  • 兽医科学 兽医科学 兽医科学
  • 微生物学 微生物学
  • 生殖生物学 生殖生物学

背景情况:

  • 绵羊的繁殖效率受到许多因素的影响.
  • 阴道微生物群在绵羊繁殖成功中的作用仍未得到充分研究.
  • 在怀孕期间对母羊的阴道微生物群的表征对于了解生殖结果至关重要.

研究的目的:

  • 为了彻底描述整个怀孕过程中的母羊阴道微生物群.
  • 为了识别不同妊娠阶段细菌群落的变化.
  • 探索阴道微生物群和妊娠期间的荷尔蒙变化之间的潜在联系.

主要方法:

  • 每周从31只怀孕的母羊收集阴道样本,从繁殖前到放羊后.
  • 从16S rRNA基因Illumina MiSeq amplicon测序的样本中提取了DNA.
  • 分析了α多样性指标和细菌种群的相对丰富性.

主要成果:

  • 阴道微生物多样性在整个妊娠期间增加.
  • 鉴定出了细菌社区转移的三个不同的时期:早期,过渡期和中期/晚期妊娠期.
  • 像*Actinobacillus*,*Histophilus*,*Streptococcus*,*Staphylococcus*和*Ureaplasma*这样的特定细菌属在这些时期显示出不同的丰度.

结论:

  • 雌羊的阴道微生物群组成在怀孕期间经历了显著的动态变化.
  • 这些变化可能受到荷尔蒙变化的影响,特别是孕激素水平.
  • 了解这些微生物动态可以帮助识别妊娠结果的生物标志物,并开发益生菌来增强绵羊的繁殖成功.