Avian encephalomyelitis virus

Avian encephalomyelitis virus (AEV) is a virus that primarily affects poultry, including chickens, turkeys, and pheasants. It is a member of the Picornaviridae family and is known to cause a neurological disease in birds known as avian encephalomyelitis (AE).

Overview

AEV is a non-enveloped virus with a single-stranded RNA genome. The virus is highly resistant to environmental conditions and can survive for long periods in the environment. It is transmitted vertically from infected hens to their offspring through the egg, and horizontally through direct contact with infected birds or contaminated materials.

Clinical Signs

The clinical signs of AEV infection vary depending on the age of the bird. In young chicks, the disease is characterized by ataxia, tremors, and paralysis. In laying hens, the disease can cause a drop in egg production and quality. In severe cases, AEV infection can lead to death.

Diagnosis and Control

Diagnosis of AEV infection is based on clinical signs, histopathology, and laboratory testing. Control of the disease is primarily through vaccination and good biosecurity practices.

Economic Impact

AEV infection can have a significant economic impact on the poultry industry due to decreased egg production and increased mortality. It is therefore important for poultry producers to implement effective control measures to prevent and control the spread of this disease.

See Also

• Avian diseases
• Poultry farming
• Vaccination in poultry