Skeletal abnormalities in young horses associated with zinc toxicity and hypocuprosis

Abstract
Four young horses grazing pastures near industrial plants developed illthrift, lameness and skeletal abnormalities characterized by periarticular enlargement of the long bones. The clinical signs and lesions were attributed to hypocuprosis induced by an excessive intake of Zn from pasture. High pasture intakes of Fe may have further compounded the problem.
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