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Ohio State ATI

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Sara L. Mastellar, Ph.D.

Sara L. Mastellar, Ph.D.
Associate Professor
Ohio State ATI
Skou 221C
Degree Information: 
Bachelor of Professional Studies, Cazenovia College
Ph.D., University of Kentucky

Sara L. Mastellar, PhD, has been at Ohio State ATI since 2017. She is originally from New York state, where she grew up keeping horses on her parents’ dairy farm and participating in Pony Club and 4-H. She earned a BPS in management specializing in Equine Business Management from Cazenovia College, where she also rode on the Intercollegiate Dressage Association team. She then earned her PhD in equine nutrition at the University of Kentucky. After her graduate work she spent three years as the equine instructor at South Dakota State University. In addition to her degrees, she has earned a Graduate Certificate in College Teaching & Learning from the University of Kentucky and completed teaching professional development certificates at both South Dakota and Ohio state universities.

Dr. Mastellar’s research program focuses on supporting undergraduate research and the scholarship of teaching and learning. Undergraduate researchers have been mentored through presentations at Equine Science Society (ESS) meetings and publication of journal articles.

She currently teaches: Introduction to Horse Science, Introduction to Animal Sciences Lab, Basic Horsemanship, Equine Marketing, Equine Facility Management, Equine Nutrition & Feeding, Horse Judging & Evaluation, and Undergraduate Research.


Journal Articles

Mastellar, S.L.; Wright, C.; Michael, G., "Gender differences in career and species interests of animal and veterinary science first year seminar students" NACTA Journal (2019)
Carroll, H.K.; Bott-Knutson, R.C.; Mastellar, S.L., "Equine Caregiver Information-Seeking Preferences: Surveys in the Midwest" Journal of Equine Veterinary Science 64 (2018) 65-68-65-68
Mastellar, S.L.; Rosenthal, E.J.; Carroll, H.K.; Bott-Knutson, R.C., "Assessment of Equine Feeding Practices and Knowledge of Equine Nutrition in the Midwest" Journal of Equine Veterinary Science 62 (2018) 109-115-109-115
McNeill, L.R.; Bott, R.C.; Mastellar, S.L.; Djira, G. et al., "Perceptions of Equid Well Being Well-Being in South Dakota." J Appl Anim Welf Sci 21 1 (2018) 40-68-40-68
Mastellar, S.L.; Bott-Knutson, R.C., "Scientific literacy of equine students regarding the use of antibiotics and vaccines" NACTA Journal 61 4 (2017) 299-303-299-303
Bott, R.C.; Greene, E.A.; Trottier, N.L.; Williams, C.A. et al., "Environmental Implications of Nitrogen Output on Horse Operations: A Review" Journal of Equine Veterinary Science 45 (2016) 98-106-98-106
Trottier, N.L.; Bott, R.C.; Woodward, A.; Greene, E.A. et al., "Gastrointestinal Nitrogen Metabolism of Equids and Impact on Protein Requirement" Journal of Equine Veterinary Science 45 (2016) 78-86-78-86
Mastellar, S.L.; Coleman, R.J.; Urschel, K.L., "Controlled trial of whole body protein synthesis and plasma amino acid concentrations in yearling horses fed graded amounts of lysine" Veterinary Journal 216 (2016) 93-100-93-100
Carroll, H.K.; Bott, R.C.; Mastellar, S.L.; McNeill, L.R. et al., "Perceptions of equine well-being in South Dakota." JOURNAL OF ANIMAL SCIENCE 94 (2016) 24-25-24-25
Mastellar, S.L.; Moffet, A.; Harris, P.A.; Urschel, K.L., "Effects of threonine supplementation on whole-body protein synthesis and plasma metabolites in growing and mature horses" Veterinary Journal 207 (2016) 147-153-147-153
Mastellar, S.L.; Barnes, T.; Cybulak, K.; Urschel, K.L., "Splanchnic extraction of phenylalanine in mature mares was not affected by threonine supplementation" Veterinary Journal 207 (2016) 190-192-190-192
Tanner, S.L.; Wagner, A.L.; Digianantonio, R.N.; Harris, P.A. et al., "Dietary crude protein intake influences rates of whole-body protein synthesis in weanling horses" The Veterinary Journal 202 2 (2014) 236-243-236-243


Lyon, E.L.; Zynda, H.; Gelley, C.; Mastellar, S. et al., "Adapting Forages for Horses for the Modern Classroom" National Association of County Agricultural Agents AM/PIC 2022.
Mastellar, S.L.; Bott, R.C., "Scientific literacy of equine students regarding the use of antibiotics & vaccines" 2016 NAEAA Conference 2016.

Technical Reports

Skinner, M.; Mastellar, S.L., "Hoof care for athletes: The SDSU Equestrian team horses" 2017.
Mastellar, S.L., "How helmets work" 2017.
Carroll, H.K.; Schipper, S.; Mastellar, S.L., "Methods of Identifying Horses" 2017.
Mastellar, S.L., "Horseback riding helmets: FAQ" 2017.
Mastellar, S.L., "Equestrian Injury Statistics" 2017.
Blechinger, A.; Carroll, H.K.; Mastellar, S.L., "Trailering Horses in Hot or Cold Weather" 2017.
Mastellar, S.L., "Recognizing Concussions in Horseback Riders" 2017.
Sandager, K.; Mastellar, S.L., "Breed, age, and seasonal impact on quality of frozen-thawed stallion semen" 2017.
Hall, M.; Mastellar, S.L., "The Blanketing Dilemma: When to use blankets" 2017.
Rew, M.; Mastellar, S.L., "Congenital Limb Deformities in Horses" 2016.
Busselman, D.; Mook, N.; Darrington, J.; Mastellar, S.L. et al., "Establishing Biosecurity on Horse Farms" 2016.
Mastellar, S.L., "Management Considerations for the Cribbing Horse" 2015.
Sauber, M.S.; Mastellar, S.L.; Darrington, J., "Stall Flooring for the Equine Barn"