在被囚禁的木头野牛群中,与约翰氏病相关的风险因素
Ana Hernandez-Reyes1, Jeroen De Buck1, Karin Orsel1
1Faculty of Veterinary Medicine, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4.
概括
约翰氏病是由Mycobacterium avium亚种引起的. 结核病 (地图),在被关押的木头野牛中进行了研究. 年龄较大的野牛 (6-9岁) 和人口密度较高地区的野牛更有可能检测出Map.的阳性.
科学领域:
- 兽医流行病学 兽医流行病学
- 野生动物健康 野生动物健康
- 细菌学 细菌学是一门学科.
背景情况:
- 这种细菌属于Mycobacterium avium亚种. 帕拉结核病 (地图) 在反动物中引起约翰氏病.
- 捕获的野生动物,包括野牛,可能容易受到MAP的感染.
- 没有先前的流行病学数据存在地图在囚禁木头野牛群.
研究的目的:
- 为了调查在被囚禁的木头野牛群中对MAP阳性的潜在风险因素.
- 检查年龄,性别和特定位置密度对地图状态的影响.
主要方法:
- 在一年内 (2021年10月至2022年10月) 收集的便样本.
- 采用DNA提取,然后使用qPCR向IS900和F57基因.
- 液体培养确认和回归分析以确定风险因素.
主要成果:
- 在2021年10月,IS900/F57 qPCR的流行率为4.7%.
- 具有培养确认的IS900 qPCR的患病率为6.8%.
- 年龄在6-9岁的木头野牛显著更有可能呈MAP阳性.
- 在两个诊断场景中,较高的动物密度 (位置B) 与地图阳性有关.
结论:
- 确定年龄和较高的动物密度是约恩斯病在受囚禁木头野牛的显著风险因素.
- 这些发现为进一步研究商业和野生野牛种群提供了基础.
- 强调在野生动物中管理约翰氏病时考虑流行病学因素的重要性.
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