Poultry diseases and treatment
Dr. Mujeeb Ather Asst. Director (Pathologist)
Veterinary Biological Research Institute, Hyderabad .
Causative agent – RNA virus of sarcoma group.
- Distended abdomen.
- Loss of breast muscle with a prominent keel bone, shriveled
- Ascitis in a few birds.
- Loss of appetite.
- Decrease in egg production.
- Very enlarged extending up to the region.
- Dark red in colour with fine white necrotic lesions
distributed throughout the
- Friable organ with thin margins.
- The organ is very much swollen, soft, friable and dark
- Slight enlargement of the organ with a few to many small
- Unilateral involvement is more common.
- The organ is friable.
OVARY, LUNG AND PROVENTRICULUS
- Presence of tumerous growth.
- Proliferative lesions with occupied uniform distribution
throughout the organ.
- The tumour cells have moderately basophilic cytoplasm.
- The nucleus is round and displaced.
- Hepatic cells shows degenerative changes associated
- Proliferation of lymphoblasts throughout the organ.
- Diffuse accumulation of large sized lymphoid cells in
between the tubules and
- Localized mild lymphoid cell infiltration.
- Focal accumulation of lymphoid cells in intermuscular
fibres and around the
- Muscle fibres with degenerative changes and necrosis.
- Proliferation of lymphoblasts in bronchial mucosa with
- Uniformly distributed lymphoblasts with focal aggregation
cytoplasm is basophilic and the nucleus is vesicular.
- By gross lesions.