Lethal Sycamore maple intoxication in a grazing three-month-old foal
Publication date
2025-12
Authors
Janzen, N
Sander, J
Terhardt, M
Mallek, M
Smith, H
Witt, P
Theelen, M.J.P.
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Advisors
Supervisors
Document Type
Article
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Abstract
The case of a young foal poisoned by maple toxin is described. It showed signs of myopathy caused by ingesting life-threatening amounts of maple toxin. Some maple trees (Acer species) can pose a health risk to grazing horses. The leaves, seeds and shoots contain hypoglycin A (HGA) and methylencyclopropylglycine (MCPRG) and can cause life-threatening atypical myopathy.
Keywords
Atypical myopathy, Grazing of foals, Horse breeding, Hypoglycin A, Sapindaceae toxins, Equine, SDG 3 - Good Health and Well-being
Citation
Janzen, N, Sander, J, Terhardt, M, Mallek, M, Smith, H, Witt, P & Theelen, M J P 2025, 'Lethal Sycamore maple intoxication in a grazing three-month-old foal', Journal of Equine Veterinary Science, vol. 155, 105713. https://doi.org/10.1016/j.jevs.2025.105713