Avian Leukosis Virus Subgroup J in Layer Chickens, China
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چکیده
منابع مشابه
Avian Leukosis Virus Subgroup J in Layer Chickens, China
To the Editor: In recent years, cases of avian leukosis virus subgroup J (ALV-J) infection and tumors in commercial layer chickens and breeders of egg-type chickens have been emerging in the People’s Republic of China. ALV-J was fi rst isolated from meattype chickens with myeloid leukosis in 1988. Although egg-type chickens have been experimentally infected with ALV-J to induce tumors (1), fi e...
متن کاملMolecular epidemiology of avian leukosis virus subgroup J in 1 layer flocks in China
23 Avian leukosis virus subgroup J (ALV-J) was first isolated from meat-type 24 chickens in 1988. No field cases of ALV-J infection and tumors in layer chickens were 25 observed worldwide until 2004. However, layer flocks in China have experienced 26 outbreaks of this virus in recent years. The molecular epidemiology of ALV-J strains 27 isolated from layer flocks was investigated. The env genes...
متن کاملMolecular epidemiology of avian leukosis virus subgroup J in layer flocks in China.
Avian leukosis virus subgroup J (ALV-J) was first isolated from meat-type chickens in 1988. No field cases of ALV-J infection or tumors in layer chickens were observed worldwide until 2004. However, layer flocks in China have experienced outbreaks of this virus in recent years. The molecular epidemiology of ALV-J strains isolated from layer flocks was investigated. The env genes of 77.8% (21/27...
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Mortality from myeloid leukosis was observed in commercial layers from 12 farms in northern China. Affected chickens were extremely thin and dehydrated, bleeding occurred in feather follicles and claws, combs were pale and anaemic, phalanges were swollen, and many yellowish-white tumours were seen on the visceral surface of the sternum. Focal tumour cells, with spherical eosinophilic granules i...
متن کاملA novel subgroup of exogenous avian leukosis virus in chickens.
An avian leukosis virus with a wide host range belonging to a new subgroup for chickens was isolated from meat-type chicken lines. The virus, of which HPRS-103 strain is the prototype, was of low oncogenicity in chickens but appeared to behave like an exogenous leukosis virus. Neutralizing antibodies to the virus were found in three of five meat-type chicken lines, but not in seven layer lines....
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ژورنال
عنوان ژورنال: Emerging Infectious Diseases
سال: 2010
ISSN: 1080-6040,1080-6059
DOI: 10.3201/eid1610.100780