The ACER team


    2017 | Doctor of Philosophy (PhD) in Epidemiology

  • Department of Population Medicine, Ontario Veterinary College, University of Guelph

    2014 | Doctor of Veterinary Medicine (DVM)

  • Ontario Veterinary College, University of Guelph

    2010 | Bachelor of Science (BSc Honours)

  • Department of Animal Bioscience, University of Guelph

Dave Renaud

Veterinarian and Consultant

Dave is passionate about working in the agricultural field and helping producers, organizations, and individuals overcome challenges they face. Specifically, he is interested in solving problems surrounding antimicrobial resistance and use, food safety, and animal health. He strives to generate innovative ideas to combat and solve these challenges through his training in epidemiology and veterinary medicine. His unique skill set combines a background in advanced quantitative statistical analysis and in conducting large-scale observational and experimental study designs.

Dave is a veterinarian and completed his PhD in epidemiology in the Department of Population Medicine at the Ontario Veterinary College, University of Guelph. His PhD is focused on using observation and clinical trials to identify risk factors impacting male dairy calf health in Ontario. He continues to be involved at a bovine veterinary practice focusing on dairy herd health and preventative medicine, where he enjoys helping his clients achieve their health and production goals. He is also a committee member involved in the development of the Code of Practice for the Care and Handling of Veal Cattle and works on an Animal Care Committee for a research corporation. Dave joined the ACER team in 2017 as an associate consultant, and is excited to create knowledge-based solutions to challenges faced in the agricultural industry.


  • Leslie, K.E., Nelson, B., Godden, S.M., Duffield, T.F., DeVries, T.J., Renaud, D.L. 2019. Assessment of selenium supplementation by systemic injection at birth on pre-weaning calf health. Bovine Pract. 53(1):44-53.

  • Shock, D.A., Roche, S.M., Genore, R.L., Renaud, D.L., 2019. Exploring the economic impact that registered veterinary technicians have on Ontario veterinary practices. Can. Vet. J. (In press).

  • Renaud, D.L, Skidmore, A., Roche, S.M., Steele, M.A., Shock, D.A., 2019. Evaluation of Saccharomyces cerevisiae boulardii CNCM I-1079 fed pre-weaning on health and growth of male dairy calves. App. Ani. Sci.  (In press).

  • Roche, S.M., Von Massow, M., Renaud, D.L., Shock, D.A., Jones-Bitton, A.Q., Kelton, D.F. 2019. Cost-benefit for implementation of a participatory extension model for improving on-farm adoption of Johne’s disease control recommendations. J. Dairy Sci. (In press).

  • Scott, K., Kelton, D.F., Duffield, T.F., Renaud, D.L. 2019. Risk factors identified on arrival associated with morbidity and mortality at a grain-fed veal facility: A prospective cohort study. J. Dairy Sci. (In press).

  • Villot, C., Ma, T., Renaud, D.L., Hosseini-Ghaffari, M., Gibson, D.J., Skidmore, A., Chevaux, E., Guan, L.L., Steele, M.A. 2019. Saccharomyces cerevisiae boulardii CNCM I-1079 affects health, growth, and fecal microbiota in milk-fed veal calves. J. Dairy Sci. 102(8):7011-7025.

  • Renaud, D.L., Dhuyvetter, K.C., LeBlanc, S.J., Kelton, D.F., Duffield, T.F., Overton, M. 2019. Effect of health status upon arrival at a single milk-fed veal facility on breakeven purchase price of calves. J. Dairy Sci. 102(9):8441-8453.

  • Wood, D.R., Blome. R.M., Keunen, A.J., Keunen, B.W., Crenshaw, J.D., Campbell, J.M., Renaud, D.L. 2019. Short communication: Effects of porcine plasma or combined sodium butyrate and Bacillus subtilis on growth and health of grain-fed veal calves. J. Dairy Sci. 102(8):7183-7188.

  • von Konigslow. T.E., Renaud, D.L., Duffield, T.F., Higginson, V., Kelton, D.F. 2019. Validation of an automated cell counter to determine leukocyte differential counts in neonatal Holstein calves. J. Dairy Sci. 102(8):7445-7452.

  • Winder, C. B., Churchill, K. J., Sargeant, J. M., LeBlanc, S. J., O’Connor, A. M., and Renaud, D. L.,  2019. Invited Review: Completeness of reporting of experiments: REFLECTing on a year of animal trials in the Journal of Dairy Science. J. Dairy Sci. 102(6):4759-4771.

  • Renaud, D. L.,  Kelton, D. F., Weese, J. S., Noble, C., Duffield, T. F. 2019. Evaluation of a multispecies probiotic as a supportive treatment for diarrhea in dairy calves: A randomized clinical trial. J. Dairy Sci. 102(5):4498-4505.

  • Van Schyndel, S. J., Bauman, C. A., Pascottini, Renaud, D. L., O. B., Dubuc, J., Kelton, D. F. 2019. Reproductive management practices on dairy farms: The Canadian National Dairy Study 2015.  J. Dairy Sci. 102(2):1822-1831.

  • Shock, D. A., Renaud, D. L., Roche, S. M., Poliquin, R., and Olsen, M. E. 2018. Evaluating the impact of meloxicam oral suspension on subsequent production, health, and culling in dairy cows: a randomized clinical field trial. PLOS One.

  • Villot, C., Renaud, D. L., Skidmore, A., Aguilar, A., Chevaux, E., and Steele, M. 2018. Effect of Saccharomyces cerevisiae boulardii on the health and performance of male holstein calves. J. An. Sci. 3:22-23.

  • Ma, T., Renaud, D. L., Aguilar, A., Chevaux, E., Guan, L., and Steele, M. 2018. Alteration of fecal bacterial composition in pre-weaned veal calves by supplementation of Saccharomyces cerevisiae boulardii in milk replacer. J. An. Sci. 3:407-408.

  • Renaud, D.L., Kelton, D.F., and Duffield, T.F. 2018. Short Communication: Validation of  test-day milk test for β -hydroxybutyrate for identifying cows with hyperketonemia. J. Dairy Sci. 102(2):1589-1593.

  • Renaud, D.L., Duffield, T.F., LeBlanc, S.J., Ferguson, S., Haley. D.B., and Kelton, D.F. 2018. Risk factors associated with mortality at a milk-fed veal facility: A prospective cohort study. J. Dairy Sci. 101(3):2659-2668.

  • Renaud, D.L., Kelton, D.F., and Duffield, T.F. 2018. Short communication: Validation of methods to practically evaluate failure of passive transfer in calves arriving to a veal facility. J. Dairy Sci. 101(10):9516-9520.


  • Renaud, D.L., Overton, M., Kelton, D.F., LeBlanc. S.J., Dhuyvetter, K., and Duffield, T.F. 2018. Effect of health status evaluated at arrival on growth in milk-fed veal calves: A prospective single cohort. J. Dairy Sci. 101(11):10383-10390.

  • Dunn, T.R, Ollivett, T.L., Renaud, D.L., Leslie, K.E., Duffield, T.F., and Kelton, D.F. 2018. The effect of lung consolidation, as determined by ultrasonography, on first lactation milk production in Holstein dairy calves. J. Dairy Sci. 101(6):5404-5410

  • Graham, A., Renaud, D.L., Duffield, T.F., and Kelton, D.F. 2018. Calf cleanliness does not predict diarrhea upon arrival at a veal calf facility. J. Dairy Sci. 101(4):3363-3366.

  • Renaud, D.L., Duffield, T.F., LeBlanc, S.J., Haley, D.B., and Kelton, D.F. 2018. Clinical and metabolic indicators associated with early mortality at a milk-fed veal facility: A prospective case-control study. J. Dairy Sci. 101(3):2669-2678.

  • Renaud, D.L., Kelton, D.F., LeBlanc, S.J., Haley, D.B., and Duffield, T.F. 2017. Calf Management risk factors on dairy farms associated with male calf mortality on veal farms. J. Dairy Sci. 101(2):1785-1794.

  • Renaud, D.L., Duffield, T.F., LeBlanc, S.J., Haley, D.B., and Kelton, D.F. 2017. Management practices for male calves on Canadian dairy farms. J. Dairy Sci. 100(8):6862-6871.

  • Renaud, D.L., Kelton, D.F., LeBlanc, S.J., Haley, D.B., and Duffield, T.F. 2017. Validation of commercial luminometry swabs for total bacteria and coliform counts in colostrum-feeding equipment. J. Dairy Sci. 100(11):9459-9465.

  • Renaud, D. L., Duffield, T. F., Kelton, D. F., LeBlanc, S. J., Haley, D. B. 2016. Health status of dairy feeder calves arriving to a veal facility. J. An. Sci. 94(5):51.

  • Newby, N.C., Renaud, D.L., Tremblay, R., and Duffield, T.F. 2014. Evaluation of the effects of treating dairy cows with meloxicam at calving on retained fetal membranes risk. Can. Vet J. 55(12):1196-1199. 102(8):7445-7452.


Service & Leadership

  • Animal Care Committee Member - Trouw Nutrition

    2014 - present

    • Responsible for evaluating research trials for merit and appropriateness
    • Review animal care concerns and, with other committee members, suggest improvements or changes to improve animal welfare on the research farm
  • Veal Code of Practice Committee Member - National Farm Animal Care Council

    2014 - 2017

    • In collaboration with other industry stakeholders, created a nation-wide animal welfare standard for veal cattle
    • Appointed representative for the Canadian Veterinary Medical Association

Memberships & Associations

  • American Dairy Science Association

  • Canadian Animal Health Institute

  • Ontario Livestock and Poultry Council

  • Canadian Veterinary Medical Association

  • American Association of Bovine Practitioners

  • Ontario Association of Bovine Practitioners

We have a passion for agriculture and agri-food and believe in studying health and disease through a one health lens.

Agricultural Communications &
Epidemiological Research

Understand. Inform. Influence.

We are a collaborative group, keen to work with like-minded partners across the globe. Want to explore a problem, project, or opportunity?

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