Limb deformities in foals associated with ingestion of locoweed by mares

McIlwraith, C.W.; James, L.F.

Journal of the American Veterinary Medical Association 181(3): 255-258

1982


ISSN/ISBN: 0003-1488
PMID: 7107503
Document Number: 190945
Five of 26 pregnant mares observed ingesting locoweed (Astragalus mollisimus) subsequently aborted and another 10 produced foals with various limb deformities. Seven of the foals had deformities of a flexion-extension type and 3 had angular deformities. Four foals were normal. The limb deformities either resolved spontaneously (5 cases) or were treated successfully (in 4 of the other 5 cases). Diagnosis was based on evidence that the mares had eaten the plants, and the similarity of the syndrome to that previously reported in sheep and cattle.

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