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Poultry Diseases
Marek's disease in turkeys

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MAREK'S disease, caused by serotype- 1 strains of Marek's disease herpesvirus (MDV-1), is probably the most common virus-induced oncogenic and immunosuppressive disease of poultry. The diagnosis of Marek's disease in turkeys represents a relatively unusual finding compared with the more widespread distribution and frequency of the disease typically associated with chickens. Other virus-induced tumours of turkeys are caused by infections including reticuloendotheliosis virus, lymphoproliferative disease virus and other closely related neoplastic viruses of the avian leukosis virus group. We wish to report the diagnosis of Marek's disease in a turkey from a backyard flock of mixed poultry species in England.

During May 2012, one adult turkey stag was submitted to AHVLA – Sutton Bonington for postmortem examination from a smallholding with approximately 40 birds of different species comprising six ornamental, rare-breed adult chickens, peafowl, pheasants, guinea fowl, turkeys, geese and various breeds of duck. The ducks and geese were free-ranging with access to a large pond, while the chickens, turkeys and other birds shared a pen. The …

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