在液态保存的野猪精液中存在Serratia marcescens污染的危险因素 - - 一项跨实验室的比较研究
Sophie Henneberg1, Anine Riedel1, Markus Jung1
1Institute for Reproduction of Farm Animals Schönow, Bernau, Germany.
Animal reproduction science
|July 20, 2025
概括
没有抗生素的野猪人工授精 (AI) 需要严格的卫生. 人工智能实验室中的Serratia marcescens污染降低了精子质量,并显示出抗生素耐药性,凸显了改善卫生实践的必要性.
科学领域:
- 兽医微生物学 兽医微生物学
- 动物繁殖 动物繁殖
背景情况:
- 无抗生素扩展剂越来越多地用于野猪人工授精 (AI),以对抗抗生素耐药性.
- 确保卫生性精液生产和实验室实践在AI中心至关重要.
研究的目的:
- 评估精液的微生物和精子质量,并在德国猪AI实验室中确定卫生关键控制点 (HCCP).
- 在野猪人工智能实验室中调查细菌污染,确定细菌属,并确定抗菌素易感性.
主要方法:
- 在德国8个猪AI中心的10个实验室中,从9个HCCP (n=90) 和15个延长精液剂量 (n=150) 采集微生物样本.
- 使用矩阵辅助激光溶解离子化时间飞行质谱和13种抗生素的抗菌敏感性测试进行细菌鉴定.
主要成果:
- 在HCCP中发现了21种细菌属;在三个实验室中发现了Serratia marcescens (S. marcescens),污染了水槽和精液染料.
- 10%的精液剂量 (n=15) 被污染,其中11个含有S. marcescens,导致精子质量降低 (凝结,运动性降低).
- S. marcescens分离物对13种测试的抗生素中平均有9种抗生素表现出耐药性,尤其是 gentamicin.
结论:
- 野猪AI实验室中的Serratia marcescens污染对精液质量构成重大风险,并导致抗生素耐药性.
- 在水槽和排水管中保持严格的卫生是必不可少的.
- 应该考虑停止在人工智能精液生产中使用精液染料,以减轻污染风险.
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