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Publication type: Journal Article
Document type: Full Paper

Year: 2004

Author(s): Hackl, S; Wlaschitz, S; Zentek, J; van den Hoven, R

Title: Atypische Myoglobinurie der Weidepferde.

Source: Veterinary Medicine Austria / Wiener Tierärztliche Monatsschrift (91) 170-176.

Authors Vetmeduni Vienna:

Berger Sonja
Van Den Hoven Rene
Zentek Jürgen

Vetmed Research Units
University Equine Clinic, Clinical Unit of Equine Internal Medicine
Institute of Animal Nutrition and Functional Plant Compounds

Atypical myoglobinuria in horses at grass. Atypical myoglobinuria of horses at grass shares clinical signs with other known myopathies in horses, but it has a different and so far unknown aetiology and a higher case fatality rate. Atypical myoglobinuria often occurs in late autumn or winter after a sudden change in weather and a drop in temperature. Affected horses are usually kept at grass with little or no extra feed supplementation. Usually they are in good body condition and have not been worked previously to the onset of the disease. They show a sudden onset of stiffness and tremors. The urine is dark red to brown. Serum creatine kinase and aspartate aminotransferase are grossly elevated. Horses often become recumbent within 24 to 48 hours and sudden deaths within one to three days are frequent. The disease has occured in all ages and all breeds of horses, but young horses seem to be more commonly affected. Symptomatic therapy is suggested, but prognosis is poor.

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