Professionnal activities
- Director, Canadian Bovine Mastitis and Milk Quality Research Network (CBMMQRN)
- Chercheur membre du Groupe de Recherche en Épidémiologie des Zoonoses et en Santé Publique (GREZOSP)
Professionnal / research interests
- Understanding intramammary infection dynamics and associated risk factors.
- Developement of tools for surveillance and monitoring of intramammary infection incidence on dairies.
- Development of a structured approach for improving milk quality in Canadian dairy herds.
- Quantitative bias analysis.
- Development of statistical models accounting for the imperfect sensitivity and specificity of the diagnostic test in longitudinal studies.
- Validation of epidemiologic questionnaires.
- Developement of novel approaches for evaluating clinical reasoning.
- Communication and knowledge transfer strategies.
Research opportunity for students
Adjusted milking during the early lactation for controlling the negative energy balance and its consequences.
For years, we have tried to control the deleterious impacts of pronounce negative energy balance during early lactation of dairy cows by increasing energy concentration of their diet. Recent studies, however, suggested that such control could potentially be achieved by reducing the needs (i.e. by reducing milk production) during a very short period of time and this, without negative impacts on subsequent milk production. The objective of the proposed study is to estimate the effect of such management strategy on incidence of diseases, on reproductive performances, on milk production, and on culling risk in regular commercial dairies.
Our research team is looking for one PhD candidate and one MSc student in veterinary science - epidemiology option. Research scholarships of up to $30,000/year are available for the recruited candidates. Note that these scholarships can potentially be complemented by additional scholarships obtained by the candidates. Furthermore, these research scholarships are not subject to any Canadian or provincial income taxesand, therefore, represent a net salary. Please contact me for additional information.
Publications
Peer-reviewed
2013
Dufour, S. and I. R. Dohoo. 2013. Relationship between herd intramammary infection incidence and elimination rate during the dry period. Journal of Dairy Science 96(3):1672-1676.
Dufour, S. and I. R. Dohoo. 2013. Monitoring lactating cows herd incidence of intramammary infection using repeated longitudinal somatic cell count measurements. Journal of Dairy Science 96(3):1568-1580.
2012
Dufour, S. et I. R. Dohoo. 2012. Monitoring dry period intramammary infection incidence and elimination rates using somatic cell count measurements. Journal of Dairy Science 95:7173-7185.
Saini, V., J. T. McClure, D. Léger, S. Dufour, A. G. Sheldon, D. T. Scholl, et H. W. Barkema. 2012. Antimicrobial use on Canadian dairy farms. Journal of Dairy Science 95:1209-1221.
Dufour, S., S. Latour, Y. Chicoine, G. Fecteau, S. Forget, J. Moreau, et A. Trépanier. 2012. Use of the Script Concordance Approach to Evaluate Clinical Reasoning of Food Animal Ruminant Practitioners. Journal of Veterinary Medical Education 39(3):267-275.
Dufour, S., I. R. Dohoo, H. W. Barkema, L. Des Côteaux, T. J. DeVrie, K. K. Reyher, J.-P. Roy, et D. T. Scholl. 2012. Coagulase-negative staphylococci intramammary infection epidemiology in dairy cattle and impact of bacteriological culture misclassification. Journal of Dairy Science 95:3110-3124.
Dufour, S., I. R. Dohoo, H. W. Barkema, L. Des Côteaux, T. J. DeVrie, K. K. Reyher, J.-P. Roy, et D. T. Scholl. 2012. Manageable risk factors associated with the lactational incidence, elimination, and prevalence of Staphylococcus aureus intramammary infections in dairy cows. Journal of Dairy Science 95:1283-1300.
2011
Reyher, K. K., S. Dufour, H. W. Barkema, L. Des Côteaux, T. J. DeVries, I. R. Dohoo, G. P. Keefe, J.-P. Roy, et D. T. Scholl. 2011. The National Cohort of Dairy Farms – A data collection platform for mastitis research in Canada. Journal of Dairy Science 94(3):1616-1626.
Dufour, S., A. Fréchette, H. W. Barkema, A. Mussell, et D. T. Scholl. 2011. Invited Review: Impact of udder health management practices on herd somatic cell count. Journal of Dairy Science 94:563-579.
Dohoo, I. R., J. Smith, S. Andersen, D. F. Kelton, S. Godden, et M. R. W. Conference. 2011. Diagnosing intramammary infections: evaluation of definitions based on a single milk sample. Journal of Dairy Science 94(1):250-261.
2010
Dufour, S., H. W. Barkema, L. Des Côteaux, T. J. DeVries, I. R. Dohoo, K. K. Reyher, J.-P. Roy, et D. T. Scholl. 2010. Development and validation of a bilingual questionnaire for measuring udder health related management practices on dairy farms. Preventive Veterinary Medicine 95:74-85.
DeVries, T. J., S. Dufour, et D. T. Scholl. 2010. Relationship between feeding strategy, lying behavior patterns, and incidence of intramammary infection in dairy cows. Journal of Dairy Science 93:1987-1997.
Andersen, S., I. R. Dohoo, R. Olde Riekerink, H. Stryhn, et Mastitis Research Workers' Conference. 2010. Diagnosing intramammary infections: Evaluating expert opinions on the definition of intramammary infection using conjoint analysis. Journal of Dairy Science 93:2966-2975.
Monographs
Dufour, S., J.-P. Roy, E. Bouchard, J. Carrier, M. Brodeur, Y. Chorfi, J.-Y. Perreault, J. Wallace, B. Nolet, V. Filteau, V. Caldwell, J. Durocher, V. Tremblay, C. Fleury, S. Robert, S. Bilodeau, R. Fortin, et M.-H. Labrie. 2009. Trousse Vétérinaire TACTIC Santé du Pis. RCRMB, St-Hyacinthe, Canada.
Dufour, S., J.-P. Roy, E. Bouchard, J. Carrier, M. Brodeur, Y. Chorfi, J.-Y. Perreault, J. Wallace, B. Nolet, V. Filteau, V. Caldwell, J. Durocher, V. Tremblay, C. Fleury, D. McDermid, M. Chan, R. Webber, R. Berry, T. J. DeVrie, G. Séguin, J. Hobson, A. R. Haight, W. Shewfelt, G. P. Keefe, W. Schenkels, F. Schenkels, D. Anderson, et R. Sampson. 2011. Veterinary Kit Tactic Udder Health. CBMRN, St-Hyacinthe, Canada. |
