Poultry diseases and treatment
Dr. Mujeeb Ather Asst. Director (Pathologist)
Veterinary Biological Research Institute, Hyderabad .
Also known as Angara disease, Leechi disease, Aplastic anemia and inclusion body hepatitis
Caustive agent – A strain of adenovirus or Chicken anemia virus.
- Sudden onset.
- Signs are rare.
- Occasionally birds debilitated, reluctant to move and ruffled feathers.
- Affects chicks of 3 to 5 week age.
- Mortality reaches 70% in acute cases.
- Liver – enlarged and congested.
- Pericardium filled with fluid.
- Heart – petechial and ecchymotic haemorrhages.
- Lungs – congestion and oederma.
- Kidney – enlarged, pale and friable.
Pericardium filled with fluid
- Liver – necrosis with mononuclear cell infiltration, presence of large round
Basophilic intranuclear inclusion bodies in the hepatocytes.
- Cardiac muscle – oedematous with monounclear cell infiltration.
- Lungs – congested, haemorrhagic, catarrhal inflammation and oedema.
Intranuclear inclusion bodies
- Gross lesions.
- Serological tests H.A. test, A.G.P.T., S.N.T.
- ELISA and FAT.
- Isolation of the virus.
- Etiology is not known.
- Commonly seen in the age group of 3 to 6 week pullets and broilers
- Gizzard is eroded and darkened with necrotic areas on epithelium.
- In acute cases the morality is up to 35% .