abstract: subgroup j avian leukosis virus (alv-j) was isolated in the late 1980s from meat-type chickens in the united kingdom. alv-j with exception of some acute variants, cause myeloid leukosis in meat-type chickens with long incubation period.in this study while the status of avian leukosis virus subgroup j in six different strain of broiler grandparent flocks of iran evaluated, the evaluati...
