avian leukosis


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Related to avian leukosis: avian lymphoid leukosis

avian leukosis

[′av·ē·ən lü′kō·səs]
(veterinary medicine)
A disease complex in fowl probably caused by viruses and characterized by autonomous proliferation of blood-forming cells.
References in periodicals archive ?
Occurrence of avian leukosis virus subgroup J in commercial layer flocks in China.
11) The most common viruses associated with lymphoma in poultry are Marek's disease virus, avian leukosis virus, and reticuloendotheliosis virus.
Examples of such contamination include simian virus in early polio vaccines grown on monkey kidney cells and avian leukosis virus (ALV) in yellow fever vaccines propagated in chick embryos (1).
Lack of relationship between infection with avian leukosis virus and the presence of COFAL antigen in chick embryos.
of Elkmont, Alabama, says infections are now occurring in younger chickens and spreading faster than any other avian leukosis virus (ALV) known before.
Neoplastic diseases: Marek's disease, avian leukosis and reticuloendotheliosis.
Most avian round cell tumors reported are lymphoid, largely because of viral infections that induce lymphoid neoplasia and other hematopoietic neoplasias in domestic poultry, namely Marek's disease virus and the leukosis/sarcoma group of viruses known as avian leukosis virus, and reticuloendotheliosis virus.
13-15) Additionally, mesotheliomas have been induced in chickens by several viruses, most notably a strain of avian leukosis virus.
13,14) Likewise, avian leukosis virus A, (15) reticuloendotheliosis virus, (16) avian influenza A.
In both cases, test results were negative for Marek's disease virus, avian leukosis virus, and reticuloendotheliosis virus.
10,11) Severe leukocytosis in birds is often associated with diseases such as aspergillosis, avian mycobacteriosis, salmonellosis, chlamydiosis, and sepsis, (12) but herpesviruses (ie, Marek disease) and retroviruses (ie, avian leukosis virus, reticuloendotheliosis virus) can specifically cause a lymphocytic leukocytosis in chickens.