Pituitary pars intermedia dysfunction (equine Cushing's disease) in a Thoroughbred stallion

Equine pituitary pars intermedia dysfunction (PPID) generally occurs in older horses showing hirsutism, delayed molting, weight loss, polydipsia, polyuria, laminitis, and reproductive disorders (in broodmares), but there have been no reports on stallions. This report presents a case of a 21-year-old...

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Bibliographic Details
Published in:Journal of equine science 2015-10, Vol.26 (4), p.125
Main Authors: HATAZOE, Takashi, KAWAGUCHI, Hiroaki, HOBO, Seiji, MISUMI, Kazuhiro
Format: Article
Language:English
Subjects:
Animal diseases
Horses
Males
Online Access:Get full text
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Summary:Equine pituitary pars intermedia dysfunction (PPID) generally occurs in older horses showing hirsutism, delayed molting, weight loss, polydipsia, polyuria, laminitis, and reproductive disorders (in broodmares), but there have been no reports on stallions. This report presents a case of a 21-year-old Thoroughbred stallion that developed hirsutism and experienced delayed molting. There were no abnormal findings for semen quality or the stallion's sexual desire. The horse was diagnosed with PPID based on dexamethasone suppression test and plasma levels of adrenocorticotropic hormone. It was then medicated with pergolide mesylate. Since the horse died due to humerus fracture, an autopsy was conducted, and pituitary adenoma was confirmed. No pathological findings were defined in the testicles; therefore, reproductive activity might not have been impaired.
ISSN:1340-3516
1347-7501