Dr. Stephen LeBlanc

 

Email: sleblanc@ovc.uoguelph.ca

Office: 2538 - Stewart Building
Ext: 54594
Lab:
Ext:

Profile

Areas of Interests

• Coordinator, Dairy Health Management Certificate Program
• Dairy production medicine
• Transition cow health
• Reproductive management

Education

BSc(Agr) - MGill University
DVM, DVSc - University of Guelph

Research

Current projects include:

• Metabolic predictors of disease in peripartum dairy cows
• Prevention and treatment of postpartum uterine disease in dairy cows
• The association of level of milk production with reproductive performance

Teaching

• Ruminant Field Service clinical teaching
• Dairy rotations (Health Management; Herd Problem Solving; Nutrition) for final year DVM students
• Animal Health (POPM*4230) for senior undergraduate Animal Science students

Links

Professional Experience & Honours

Selected Publications

• LeBlanc, S. Postpartum uterine disease and dairy herd reproductive performance – A review. The Veterinary Journal, Apr;176(1):102-114, 2008.
• Walsh, R., LeBlanc, S, Vernooy, E., Leslie, K. The effect of a progesterone releasing intravaginal device (PRID) on vaginal mucosal integrity and indicators of systemic inflammation in postpartum dairy cows – Canadian Journal of Veterinary Research, 2008 72:43-49
• M.A. Quist, S.J. LeBlanc, K.J. Hand, D. Lazenby, F. Miglior, D.F. Kelton. Agreement of predicted 305-day milk yields relative to actual 305-day milk weight yields and parlour electronic identification accuracy. J. Dairy Science, 90:4684–4692, 2007
• H.A. Seifi, S.J. LeBlanc, E. Vernooy, K.E. Leslie, T.F. Duffield. Effect of Isoflupredone Acetate with/or without Insulin on Energy Metabolism, Reproduction, Milk Production and Health in Dairy Cows in Early Lactation. J. Dairy Sci, 2007, 90:4181–4191, 2007.
• Walsh, R., Leslie, K., LeBlanc, S, Kelton, D., Walton, J., Duffield, T. The effect of subclincial ketosis in early lactation on reproductive performance of postpartum dairy cows. J Dairy Sci. 2007 90(6):2788-96.
• Walsh, R., LeBlanc, S,., Duffield, T., Kelton, D., Walton, J., Leslie, K. Synchronization of estrus and pregnancy risk in anestrous dairy cows after treatment with a progesterone-releasing intravaginal device. J Dairy Sci. 2007 90(3):1139-48.
• Walsh, R., LeBlanc, S, Duffield, T., Kelton, D., Walton, J., Leslie, K. The effect of a progesterone releasing intravaginal device (PRID) on pregnancy risk to fixed timed insemination following diagnosis of non-pregnancy in dairy cows. Theriogenology. 2007 67(5):948-56.
• LeBlanc, S. Prevention of Postpartum Uterine Disease. WCDS Advances in Dairy Technology (2007) Volume 19: 145-155
• LeBlanc, S. Economics of Improving Reproductive Performance in Dairy Herds. WCDS Advances in Dairy Technology (2007) Volume 19: 201-214
• Walsh, R., Leslie, K., Duffield, T., Kelton, D., Walton, J., LeBlanc, S. Prevalence and risk factors for postpartum anovulatory condition in dairy cows - Journal of Dairy Science, 2007 90(1):315-24.
• L.C. Zahra, T.F. Duffield, K.E. Leslie, T.R. Overton, D.  Putnam, S.J. LeBlanc. Effects of Rumen-Protected Choline and Monensin Controlled-Release Capsule on Milk Production and Metabolic Function of Periparturient Dairy Cows. Journal of Dairy Science 89:4808–4818, 2006.
• LeBlanc, S, Lissemore, K, Kelton, D, Duffield, T., Leslie, K.  Major advances in disease prevention in dairy cattle. Journal of Dairy Science 89: 1267-1279, 2006
• Sheldon, I.M., G.S. Lewis, S. LeBlanc, R. Gilbert. Defining post partum uterine disease in cattle. Theriogenology, 65:1516-1530, 2006
• LeBlanc, S.J., Leslie, K.E., Duffield, T.D. Metabolic predictors of displaced abomasum in dairy cattle.  Journal of Dairy Science, 88:159-170, 2005               
• LeBlanc, S.J., Herdt, T., Seymour, W., Duffield, T., Leslie, K.  Factors associated with peripartum serum concentrations of vitamin E, retinol, and b-carotene in Holstein dairy cattle, and their associations with periparturient disease. Journal of Dairy Science. 87:609-619, 2004.
• LeBlanc, S.J., Leslie, K.   Field trial of single prostaglandin F_2a presynchronization before Ovsynch at first insemination in lactating dairy cows. Journal of Dairy Science. 86:3215-3217, 2003
• Duffield, T., LeBlanc, S.J., Bagg, R., Leslie, K., Ten Hag, J., Dick, P. Effect of a monensin controlled release capsule on metabolic parameters in transition dairy cows. Journal of Dairy Science. 86:1171-1176, 2003.
• LeBlanc, S.J., Duffield, T., Leslie, K., Bateman, K., Keefe, G., Walton, J., Johnson, W.  Defining and diagnosing postpartum clinical endometritis, and its impact on reproductive performance in dairy cows. Journal of Dairy Science. 85:2223-2236., 2002.
• LeBlanc, S.J., Duffield, T., Leslie, K., Bateman, K., Keefe, G., Walton, J.,  Johnson, W. 2002. The effect of treatment of clinical endometritis on reproductive performance in dairy cows. Journal of Dairy Science. 85:2237-2249, 2002.
• LeBlanc, S.J., Duffield, T.,  Leslie, K., Bateman, K.,  TenHag, J.,  Walton, J., Johnson, W. The effect of prepartum injection of vitamin E on health in transition dairy cows. Journal of Dairy Science. 85:1416-1426, 2002.
• Duffield, T.,  Bagg, R.,  Descoteaux, L., Bouchard, E.,  Brodeur, M.,  DuTremblay, D.,  Keefe, G., LeBlanc, S.J.,  Dick, P.  2002. Prepartum monensin for the reduction of energy associated disease in postpartum dairy cows. Journal of Dairy Science. 85:397-405, 2002.
• LeBlanc, S.J. The Ovsynch breeding program for dairy cows – A review and economic perspective. The Bovine Practitioner. 35: 13-21, 2001.
• LeBlanc, S.J., Leslie, K., Ceelen, H., Kelton, D., Keefe, G.  1998. Measures of estrus detection and pregnancy in dairy cows after GnRH administered within a prostaglandin F_2a-based estrus synchronization program.  Journal of Dairy Science. 81: 375-381, 1998.