Avian leukosis virus in indigenous chicken breeds, China

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...

Avian Leukosis Virus

Ultrastructural studies of chick embryo cells morphological ly altered by strain MC29 avian leukosis virus revealed marked and characteristic differences from normal cells and cells al tered by infection with other avian tumor viruses. Such differ ences were manifest in part in the cytoplasm by high content of free ribosomes, poorly developed rough endoplasmic reticu lum, frequent fat droplets,...

Avian lymphoid leukosis: Virus-like particles in kidney Cells

Virus particles and viral antigens in chicken tissues free of infectious avian leukosis virus.

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Investigations of Avian Leukosis Virus Subgroup J and Reticuloendotheliosis Virus Infections in Broiler Breeders in China

Avian leukosis virus subgroup J (ALV-J) and reticuloendotheliosis virus (REV) were detected in Arbor Acres (AA) parent broiler breeders between September 2008 and December 2009 in China. Samples from blood (n=1331) and sick chickens (n=152) were obtained from 19 flocks in China for serology, histopathology and PCR analysis. Serologic analysis revealed that the anti-ALV-J, -REV or -ALV-J and REV...