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禽类E型肝炎的血清流行率及其与分层的生产参数的关联

Stephanie Hewitt¹, Kapil Chousalkar¹, Kandarp Patel¹

¹School of Animal and Veterinary Sciences, University of Adelaide, Adelaide, SA, Australia.

Veterinary microbiology

|January 31, 2025

概括

禽类肝炎E病毒 (aHEV) 在澳大利亚显著影响商业卵层群. 感染的卵产量减少,死亡率增加,食物/水摄入量发生变化,突出显示需要持续监测.

科学领域:

兽医病毒学兽医病毒学
禽类的健康禽类的健康
流行病学流行病学

背景情况:

由禽类肝炎E病毒 (aHEV) 引起的大肝病 (BLS) 是家禽全球关注的问题.
虽然自20世纪80年代以来在澳大利亚已知,但aHEV在商业卵层中的流行及其生产影响在很大程度上仍未得到调查.

研究的目的:

为了确定aHEV在澳大利亚商业卵层群中的血清流行率.
调查aHEV感染与这些群体的关键生产参数之间的关联.

主要方法:

在多个商业蛋生产和养殖场进行了横截面的流行病学调查.
血液样本从每群20只鸟类收集,用于HEV血清检测.
生产数据 (卵产量,死亡率,食物/水摄入量) 在HEV病毒阳性和病毒阴性棚之间进行了比较.

主要成果:

AHEV的血清流行率在生产群中为14.5%,在养殖群中为1%.
血清阳性小屋的每周卵产量显著下降 (p<0.001).
增加的每周死亡率 (p<0.001),食物摄入量 (p=0.003) 和水摄入量 (p<0.001) 与aHEV血清阳性相关.

结论:

已经证实澳大利亚养中存在抗aHEV抗体,对生产参数产生了显著的负面影响.
这些发现强调了aHEV在蛋行业的经济重要性以及持续监测的必要性.
需要进一步研究aHEV的病理生理学及其对卵产和死亡率的具体影响.

关键词:

澳大利亚澳大利亚澳大利亚禽类肝炎 E 病毒蛋生产蛋生产料料料料料死亡率死亡率死亡率血清的流行程度是如此.水水水水水,这是一个很好的方法.

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