斯塔菲洛科克斯 (Staphylococcus lugdunensis) 和斯塔菲洛科克斯 (Staphylococcus simulans) 是乳制品山羊中的超级分泌剂
Y de Geus1, R A Blok1, M P Spaninks2
1Institute for Risk Assessment Sciences, Department of Population Health Sciences, Faculty of Veterinary Medicine, Utrecht University, 3584 CM Utrecht, the Netherlands.
Journal of dairy science
|June 13, 2025
概括
患有乳腺炎的山羊,特别是来自Staphylococcus lugdunensis或S. simulans的山羊,可以释放数百万种细菌,显著影响散装牛奶总细菌计数 (BMTBC) 和牛奶质量. 这凸显了针对乳山羊乳腺炎的有针对性控制的需要.
科学领域:
- 兽医微生物学 兽医微生物学
- 乳制品科学 乳制品科学
- 动物健康 动物健康
背景情况:
- 大量牛奶总细菌计数 (BMTBC) 是牛奶质量和保质期的关键指标.
- 高的BMTBC可以导致奶牛农由于处罚而遭受经济损失.
- 患有乳内感染 (IMI) 的单个山羊对 BMTBC 的贡献尚不清楚.
研究的目的:
- 研究患有乳腺炎的山羊对BMTBC和大量牛奶体细胞计数 (BMSCC) 的影响.
- 确定山羊产生的特定乳腺炎病原体及其与健康的关系.
- 为了量化乳制品山羊的IMI细菌脱落.
主要方法:
- 在荷兰一家农场对98只乳山羊进行了横截面研究,这些山羊的 BMTBC 和 BMSCC 持续高.
- 在血上培养牛奶,通过MALDI-TOF MS识别细菌,并使用流细胞计和培养方法量化细菌.
- 评估乳腺健康参数,包括临床乳腺炎和不对称性.
主要成果:
- 受 Staphylococcus lugdunensis 或 S. simulans 感染的山羊会产生异常高的细菌负载 (高达 ~ 7 亿立方英/毫升).
- 存在S. lugdunensis或S. simulans与临床乳腺炎和阴茎不对称性有关.
- 这些特定的病原体显著导致BMTBC和BMSCC的升高.
结论:
- 具有特定IMI病原体的单个山羊可以大幅增加BMTBC.
- 乳房健康监测和病原体识别对于控制牛奶质量至关重要.
- 需要对S. lugdunensis和S. simulans的毒性因素进行进一步的研究,以制定预防策略.
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