- Diplomate, American College of Veterinary Internal Medicine, 1981
- PhD, Department of Pathology, University of Florida College of Veterinary Medicine, Gainesville, FL, 1987
- Residency, Large Animal Medicine, University of Florida, Gainesville, FL, 1980
- Internship, Equine Medicine, University of California – Davis, CA, 1978
- BVSc (Dist), Massey University, Palmerston, New Zealand, 1975
Honors and Awards
- Large Animal Medicine Clinician of the Year, University of Florida, Gainesville, Fla., 1991
- Daniels Young Clinical Investigator, University of Florida, Gainesville, Fla., 1991
- Large Animal Clinician of the Year, University of Florida, Gainesville, Fla., 1989
- Resident of the Year Award, University of Florida, Gainesville, Fla., 1980
- Outstanding Large Animal Intern Award, University of California, Davis, 1977
- Massey University Scholarship, Palmerston, New Zealand, 1974
- BVSc with Distinction, Massey University, Palmerston, New Zealand, 1975
- Veterinary Parasitology Prize, Massey University, Palmerston, New Zealand, 1972
Expertise includes general internal medicine and a special interest in clinincal neurology. Research interests are also in the area of inflammation/endotoxemia and in the diagnosis and biology of equine protozoal myeloencephalitis (EPM). Through this work, the pathogenesis of endoxemia in horses has been clarified and at least one new treatment developed and extensively used. In the field if EPM, Dr. MacKay has contributed to an understanding of the life cycle of the parasite and is actively involved in developing new and more satisfactory diagnostic tests.
- Effects of clarithromycin, azithromycin and rifampicin on terbutaline-induced sweating in foals.
- Spinal Cord Hamartomatous Myelodysplasia in 2 Horses With Clinical Neurologic Deficits.
- Equine Protozoal Myeloencephalitis: An Updated Consensus Statement with a Focus on Parasite Biology, Diagnosis, Treatment, and Prevention.