Poultry diseases and treatment
Dr. Mujeeb Ather Asst. Director (Pathologist)
Veterinary Biological Research Institute, Hyderabad .
The exact cause of the disorder is not known.
SIGNS AND LESIONS
- Mortality may ranges from 2 to 50%.
- Renal involvement is the characteristic feature.
- White pasting of pericloacal feathers.
- Atrophy of the kidney, it is commonly and sometimes
- Dilated ureters.
- The surviving lobe of the kidney may be enlarged.
- The ureters from atrophied lobes of kidneys are dilated and are full of white irregular concretions of calcium ureate.
- In addition to kidneys similar deposits were found in different parts like, heart , lungs, liver proventriculus and spleen hock joints
- In growing pullets swollen kidneys with tubular necrosis is seen.
- Calcium urates were found in 5 day old chick.
Calcium ureate deposits around heart Calcium ureate deposits on the liver
- Feathery crystals and basophilic spherical masses of urate.
- Uric acid crystals surrounded by histiocytes and lymphocytes with
- Necrosis, fibrosis, haemorrhages with ureate deposits.
- A significant reduction in the number of glomeruli.
The diseases which are commonly confused with visceral gout are.
Infectious bronchitis, excess dietary calcium, phosphorus deficiency, water deprivation and mycotoxins.