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Pathological and Molecular Characterization of a Duck Plague Outbreak in Southern China in 2021

文献类型： 外文期刊

作者： Liang, Zhipeng 1 ; Guo, Jinyue 1 ; Yuan, Sheng 1 ; Cheng, Qing 1 ; Zhang, Xinyu 1 ; Liu, Zhun 1 ; Wang, Congying 1 ; Li, Zhili 1 ; Hou, Bo 2 ; Huang, Shujian 1 ; Wen, Feng 1 ;

作者机构： 1.Foshan Univ, Coll Life Sci & Engn, Foshan 528231, Peoples R China

2.Fujian Acad Agr Sci, Inst Anim Husb & Vet Med, Fujian Anim Dis Control Technol Dev Ctr, Fuzhou 350013, Peoples R China

3.Foshan Univ, Coll Life Sci & Engn, Guangdong Prov Key Lab Anim Mol Design & Precise B, Foshan 528231, Peoples R China

关键词： duck plague; duck plague virus; Herpesviridae; UL2; LORF11

期刊名称：ANIMALS （ 影响因子：3.231； 五年影响因子：3.312 ）

ISSN： 2076-2615

年卷期： 2022 年 12 卷 24 期

页码：

收录情况： SCI

摘要： Simple Summary This study reports the pathology, molecular detection, isolation, and genetic characterization of a novel duck plague virus from a recent outbreak affecting domestic layer ducks in southern China, in December 2021. Our study emphasizes the urgent need to establish comprehensive and nationwide surveillance of DPV among poultry. Duck plague (DP) is a highly contagious viral disease in ducks caused by the duck plague virus (DPV). The DPV, a member of Herpesviridae, poses a severe threat to the waterfowl farming industry worldwide. In this study, we reported a recent outbreak of DPV in domestic laying ducks at 310 days of age from southern China in December 2021. The gross lesion, histopathologic examination, molecular detection, and genetic characterization studies of DPV are described here. As a result, gross lesions such as an enlarged congestive spleen and liver were observed. Liver with vacuolar degeneration and small vacuoles and spleen with hemosiderosis were remarkable microscopic findings. Our results suggested that the liver had the highest viral load, followed by the trachea, pancreas, kidney, brain, spleen, and heart. In addition, DPV was successfully isolated in chicken embryo fibroblast cell culture and designated as DP-GD-305-21. The UL2, UL12, UL41, UL47, and LORF11 genes of DP-GD-305-21 shared a high nucleotide homology with the Chinese virulent (CHv) strain and the Chinese variant (CV) strain. In conclusion, this study reports the isolation and molecular characterization of DPV from a recent outbreak in southern China. Our results contributed to the understanding of the pathological and molecular characterization of currently circulating DPV in China.

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