Introduction
A complex condition of chickens associated with drug toxicities, mycotoxins and viral infections and usually following a course of approximately 3 weeks. Morbidity varies, mortality is 5-50%.
Signs
- Dejection.
- Loss of appetite.
- Poor growth.
- Pale comb and wattles.
- Blood in droppings.
Post-mortem lesions
- Haemorrhages in one or more sites: skin, muscles, liver, heart, serosa and mucosae.
- Liver yellow.
- Carcase anaemia.
- Bone marrow pale with fatty change.
Diagnosis
History, signs, lesions.
Treatment
Vitamin K, remove sulphonamides, add liver solubles to feed.
Prevention
Avoid causative factors.