Tumors Associated with Avian Leukosis Virus Subgroup J in Layer Hens during 2007 to 2009 in China

Journal of Veterinary Medical Science

Li ZHANG¹  Zhizhong CUI¹  Ziqiang CHENG¹  Jianzhu LIU¹ 

[1] College of Animal Science and Veterinary Medicine, Shandong Agricultural University

关键词: avian leukosis virus subgroup J (ALV-J);    layer chickens;    multiple neoplasms;   

DOI  :  10.1292/jvms.09-0564

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(27)Cited-By(32)In the 3 years leading up to November 2009, 6 different types of naturally occurring neoplasms associated with avian leukosis virus subgroup J (ALV-J) were diagnosed by histopathology, polymerase chain reaction (PCR) and immunohistochemistry (IHC) in 140 layer hens out of approximately 100,000. The most prevalent tumor type was hemangioma (50%) in commercial layer flocks; the second most prevalent neoplasm type was myelocytoma (38.6%); a small number of ALV-J positive lymphomas (4.3%) that were not associated with Marek's disease (MD) or lymphoid leukosis (LL) was observed. Histiocytic sarcomas (2.1%) were found mainly in the spleen, liver and kidney. Fibrosarcomas (2.8%) presented as metastatic thigh, liver, lung and kidney neoplasms. Three cases of intestinal adenocarcinoma (2.1%) were found associated with ALV-J. Chickens with multiple tumors were a common phenomenon. Usually, hemangiomas plus myelocytomas (8.6%), myelocytomas plus histiocytic sarcomas (2.1%), hemangioma plus myelocytoma and lymphoma (3.6%) were found in various viscera organs. The present report describes the occurrence of multiple neoplasms associated with ALV-J in field layer hens.

【 授权许可】

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