密集养乳羊中Maedi-Visna的血清流行病学:为期两年的前性研究
Aphrodite I Kalogianni1, Ilias Bouzalas2, Ioannis Bossis3
1Department of Animal Science, School of Animal Biosciences, Agricultural University of Athens, 11855 Athens, Greece.
Animals : an open access journal from MDPI
|July 29, 2023
概括
梅迪-维斯纳病毒 (MVV) 感染在密集乳制羊中很常见,血清流行率和发病率很高. 一些受感染的羊会失去抗体,在控制计划中冒着错误诊断的风险.
科学领域:
- 兽医流行病学 兽医流行病学
- 传染病的动态传染病的动态.
背景情况:
- 梅迪-维斯纳病毒 (MVV) 对奶羊的健康和生产力构成重大威胁.
- 了解MVV传播对于在密集型农业系统中有效管理疾病至关重要.
研究的目的:
- 为了前性地评估密集养乳羊中梅迪-维斯纳感染的血清流行病学.
- 在商业群体环境中,评估MVV血清状况随时间变化的动态.
主要方法:
- 在两年内对407只希奥斯和拉卡昂绵羊进行前性研究.
- 半年间接的ELISA测试在预交配和预排卵.
- 记录农场管理实践和动物特征 (年龄,品种,生产阶段).
主要成果:
- 总体血清流行率达到了84.8%,发病率表明有显著的水平传播.
- 点血清患病率各不相同 (48.5%-96.0%),并且随着年龄的增长而增加.
- 很大一部分羊的血清逆转 (8.1%) 或显示间歇性抗体存在 (10.3%).
结论:
- 密集的奶羊养殖促进了MVP的传播,需要强有力的控制策略.
- 血清学变异性突出显示了横截面研究和消除计划中误诊的风险.
- 动态血清学模式必须为未来的MVV流行病学研究和控制计划设计提供信息.
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