ŠAgro-Plus
VETERINARY SCIENCE
Turkey arthritis reovirus. Diagnostic strategies Rahul Kumar,a,b Devi Patnayak,a Wendy Wiese,a Sunil K. Mor,a Robert E. Porter,a Sagar M. Goyala a
Veterinary Population Medicine Department and Veterinary Diagnostic Laboratory, College of Veterinary Medicine, University of Minnesota, USA b Department of Veterinary Pathology, College of Veterinary Science and Animal Husbandry, Pandit Deen Dayal Upadhyaya Veterinary Science University and Cattle Research Institute, Mathura, India
40
Avian reoviruses (ARVs) belong to genus Orthoreovirus in the family Reoviridae. They are non-enveloped viruses of 70-80 nm size having an icosahedral symmetry. The viral genome has 10 segments of double stranded RNA contained inside a double-shelled arrangement of capsid proteins. The ARVs infect several different avian species and are named accordingly viz. chicken reovirus (CRV), duck reovirus (DRV), goose reovirus (GRV), and turkey reovirus (TRV). These viruses are responsible for inapparent infections as well as frank disease in birds including enteritis, hepatitis, neurological disease, myocarditis, respiratory distress and viral arthritis/tenosynovitis. Severity and
- veterinary science -
clinical manifestation of the disease often depend on age and immune status of the host, virus pathotype, and route of exposure (oral, intratracheal, footpad, or subcutaneous). Turkey arthritis reovirus (TARV) was isolated in 1980s from joints and tendons of turkeys showing lesions of arthritis and tenosynovitis but the disease could not be reproduced experimentally. Since then, there were no reports of viral arthritis in turkeys until 2011, when the condition re-emerged in midwestern and eastern states of the US.
