Mark T. Donaldson, VMD, Dipl. ACVIM

Mark T. Donaldson, VMD, Dipl. ACVIM, practices with Unionville Equine Associates in Oxford, Pa.

Articles by: Mark T. Donaldson, VMD, Dipl. ACVIM

Equine Cushing’s in an Old Mare

I have an Arabian mare who gave birth to a healthy colt at age 15 before returning to the show ring. She was diagnosed with Cushing’s disease last year at 18, but we’d like to breed her again. Can she carry a foal to full term?

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