Assuntos
Doenças dos Bovinos/diagnóstico , Doenças dos Bovinos/prevenção & controle , Indústria de Laticínios/métodos , Epidemias/veterinária , Leite/química , Animais , Bovinos , Indústria de Laticínios/normas , Epidemias/prevenção & controle , Reações Falso-Negativas , Reações Falso-Positivas , FemininoAssuntos
Doenças das Aves Domésticas/diagnóstico , Doenças das Aves Domésticas/epidemiologia , Salmonelose Animal/diagnóstico , Salmonelose Animal/epidemiologia , Animais , Anticorpos Antibacterianos/sangue , Aves , Eutanásia Animal , Doenças das Aves Domésticas/transmissão , Prevalência , Salmonella/imunologia , Salmonelose Animal/transmissão , Testes Sorológicos/veterinária , Suíça/epidemiologiaRESUMO
Since a new envelope subgroup (J) of the avian leukosis-sarcomatosis-complex was isolated for the first time from broiler breeders in the United Kingdom in 1989 and was characterized and associated with myeloid leukosis (syn. myelocytomatosis) the emergence of this subgroup was reported from all over the world. Thus the first known case of subgroup J avian leukosis in Switzerland in four imported broiler breeder flocks will be described. A total of 53 broiler breeder birds from four flocks showing reduced performance and increased mortality were submitted for postmortem examination. Approximately 20 blood samples from each flock were monitored serologically for antibodies against avian leukosis virus subgroup J (ALV-J). On necropsy myeloid leukosis (ML) was diagnosed in all four flocks. Furthermore the blood samples of three flocks showed significant ELISA-titres for ALV-J.
