Introduction

A Type C retrovirus infection of turkeys with low morbidity and high mortality.

Signs

• Depression.
• Emaciation.
• Loss of weight.
• Persistent low mortality.
• Enlargement of abdomen, liver or bursa.
• May be asymptomatic.

Post-mortem lesions

• Focal tumours, especially in enlarged spleen.

Diagnosis

History, age, lesions, cytology. Differentiate from Reticuloendotheliosis.

Treatment

None.

Prevention

Good hygiene, all-in/all-out production, control arthropods, in future eradication.