Combined occurrence of articular and visceral gout in a Chinese goose (Anser cygnoides)

摘要

A case of combined occurrence of articular and visceral gout in a Chinese goose (Anser cygnoides) is reported with detailed gross and microsooopic changes.Gout is a condition in which crystals of uric acid or urates of sodium and calcium are deposited in tissues. The condition is seen in man, apes and birds. In birds, uric acid is the end product of protein metabolism and hyper uricemia may occur due to various reasons like, over production of uric acid, impaired destruction of uric acid, and decreased excretion of uric acid as a result of impaired filtration or altered excretion in the tubules. Moveover in birds, a sudden change in feed rations like a heavy protein diet may precipitate the onset of the disease. Both visceral gout and articular gout occur in poultry. As part of the generalized deposition of urate crystals on serous membranes, the joint cavities and tendon sheaths may also be involved invisceral gout’-. In articular gout, only the musculoskeletal system is affected and is relatively less common, and appears to be multifactorial in origin, but with a strong hereditary basis and is not consequent upon renal failure or indeed kidney involvement. Articular gout is accompanied by a painful inflammatory reaction, formation of tophi and typical granuloma. Affected joints, periarticular tissue, tendon sheaths and musculature contain extensive.