Isolation and characterization of a reovirus causing spleen necrosis in Pekin ducklings

文献类型： 外文期刊

第一作者： Liu, Qinfang

作者： Liu, Qinfang;Zhang, Guozhong;Ren, Gaixian;Chen, Liben;Gao, Jian;Zhang, Dabing;Han, Bo;Su, Wenliang;Zhao, Jixun;Su, Jingliang;Hu, Xueying;Huang, Yu

作者机构：

关键词： Pekin duckling;Spleen necrosis;Reovirus;Chicken

期刊名称：VETERINARY MICROBIOLOGY （ 影响因子：3.293； 五年影响因子：3.599 ）

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收录情况： SCI

摘要： High rates of mortality for Pekin ducklings have been recorded in several duck farms in China since 2006. Dead ducklings were characterized by spleen necrosis, suggesting microbial infection as a cause of disease. Laboratory investigations led to the isolation of a virus strain from the spleen tissues of dead ducklings, designated DRV-HC. Subsequent experimental infections with DRV-HC resulted in marked spleen necrosis in the ducklings similar to those observed in the natural outbreaks. Electron microscopy of the cultured DRV-HC revealed viral particles that were non-enveloped and icosahedral with a mean diameter of approximately 72 nm. Agar gel precipitating tests showed that the isolate shared a common group-specific antigen with chicken reovirus S1133. DNA sequencing revealed that this isolate was closely related to Muscovy duck reoviruses. Experimental infection with DRV-HC resulted in death of young chicks with necrotic foci in the liver and spleen. To the best of our knowledge, this is the first report of the isolation of a duck reovirus with high virulence in Pekin ducklings and SPF chickens.

分类号： S8

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