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Haemorrhagic Disease, Aplastic Anaemia, Haemorrhagic Anaemia

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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.