New Bolton Center Kennett Square, PA
Emergencies & Appointments:
Ryan Hospital Philadelphia, PA


Professor, Section of Reproduction and Behavior, University of Pennsylvania, School of Veterinary Medicine

Course Organizer, Core Clinical Reproduction - Univ. of Pennsylvania, New Bolton Center

Section Chief - Reproduction & Behavior, New Bolton Center

Director, Frozen Stallion Semen Program at the Hofmann Center for Reproductive Studies, New Bolton Center, University of Pennsylvania, School of Veterinary Medicine

Diplomate, American College of Theriogenologists.

Clinical Specialties: Reproduction
Research Areas: Equine sperm motility, Spermatogenesis, Stallion infertility

Contact Information:
University of Pennsylvania
School of Veterinary Medicine
New Bolton Center
Department of Clinical Studies
Room 146 Myrin Building

Stallion infertility
Idiopathic testicular degeneration
Ultrasonography of the stallion reproductive tract

Molecular biology
Sperm motility
Cell signaling
Computer assisted sperm motility analysis
Male infertility
Stallion infertility
Idiopathic testicular degeneration

Turner, R.M.*(*senior and corresponding author) Complications associated with the presence of two intrauterine glass balls used for estrus suppression in a mare. Equine Veterinary Education 27: 340-343, 2015.

Whitesell, K., McDonnell, S.M., and turner, R.M.*(senior and corresponding author) Modernizing the Stallion Breeding Soundness Evaluation. Journal of Equine Veterinary Science 34: 50-51, 2014.

Turner, R.M.* and Zeng, W. (*senior and corresponding author) The emerging pathophysiology of age-related testicular degeneration with a focus on the stallion and an update on potential therapies. Reproduction in Domestic Animals 47 (Suppl. 4): 178-186, 2012.

Knobbe, M.G., Levine, D.G., Habecker, P.L., Beech, J., and Turner, R.M.*(*senior and corresponding author) Prostatic masses in geldings. Two cases. Journal of Equine Veterinary Science 32: 628-633, 2012.

Knobbe, M.G., Maenhoudt, C., Turner, R.M., and McDonnell, S.M. Two Standardbred 64XY, SRY positive intersex cases identified as a result of high post-race testosterone concentrations in Pennsylvania. Journal of the American Veterinary Medical Association 238: 751-754, 2011.

Brito, L.F., Greene, L.M., Kelleman, A., Knobbe, M., and Turner, R.M. Effect of method and clinician on sperm morphology evaluation in stallions. Theriogenology 76: 745-750, 2011.

Turner, R.M., Rathi, R., Honaramooz, A., Zeng, W., and Dobrinski, I. Xenografting restores spermatogenesis to cryptorchid testicular tissue but does not rescue the phenotype of testicular degneration. Reproduction, Fertility and Development 22: 673 – 683, 2010.

Brito, L., Engiles, J., Turner, R.M., Getman, L., and Ebling, A. Bilateral testicular mixed germ cell-sex cord-stromal tumors in a stallion Reproduction in Domestic Animals 44: 846-851, 2009.

Brito, L., Sertich, P.L., Durkin, K., Chowdhary, B.P., Turner, R.M., Greene, L.G., and McDonnell, S.M. Autosomic 27 trisomy in a Standardbred colt Journal of Equine Veterinary Science 28: 431-436, 2008.

Schlingmann, K., Michaut, M., McElwee, J., Wolff, C.A., Travis, A.J., and Turner, R.M. Calmodulin and CaMKII in the sperm principal piece: Evidence for a motility-related calcium/calmodulin pathway. Journal of Andrology 28: 706 – 716, 2007.

B.A. (Biology) LaSalle University, Philadelphia, Pennsylvania. Graduated Maxima cum laude with Honors; Dean's List all semesters, 1985

V.M.D. (Veterinary Medicine) University of Pennsylvania, Philadelphia, Pennsylvania. , 1989

Ph.D. (Cell and Molecular Biology) University of Pennsylvania, Philadelphia, Pennsylvania, 1999