Chaouki Benchaar, Ph. D.

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Research Scientist

Dr. Benchaar is a research scientist at the Sherbrooke Research and Development Centre (Quebec) of Agriculture and Agri-Food Canada. He obtained (with distinction) a Ph.D. in Dairy Cow Nutrition and Metabolism from “Institut National Polytechnique” of Toulouse, France. After completing his Ph.D., Dr. Benchaar joined Agriculture and Agri-Food Canada (Dairy and Swine Research and Development Centre, Sherbrooke, Quebec) to work as a post-doctoral fellow (1994-1997) and research assistant (1997-2000). Since April 2000, he is a Research Scientist in Dairy Cow Nutrition and Metabolism/Sustainable Dairy Production at the Sherbrooke Research and Development. His research program focuses mainly on: 1) Quantification and mitigation of enteric methane emissions from dairy cows; 2) Impact of dietary enteric methane strategies on emissions from stored manure; 3) Dietary and nutritional approaches to reduce nitrogen excretion from dairy cows; and 4) Evaluation of potential use of plant secondary metabolites (e.g., essential oils) as feed additives to modulate rumen fermentation and enhance feed efficiency. The ultimate objective of his research program is : 1) Enhancing environmental performance of the Canadian agricultural system (reduction of green-house gas emissions and nitrogen excretion); and 2) Enhancing economic benefits of Canadian dairy production (improved production efficiency and reduced feeding costs).

Current research and/or projects

  • Canola meal to improve efficiency and sustainability of dairy production: filling knowledge gaps. Funded by Canola Council of Canada/Agriculture and Agri-Food Canada (Growing Forward III).
  • Assessment of the impact of feeding management practices on methane emissions from enteric fermentation and manure storage of dairy cows: filling knowledge gaps. Funded by Agriculture and Agri-Food Canada (A-Base).
  • Mitigation of enteric methane production from dairy cows and impact on manure emissions: Filling knowledge gaps. Funded by the Dairy Farmers of Canada/Agriculture and Agri-Food Canada (Growing Forward II).
  • Mitigation of Enteric Methane Emissions to Reduce Carbon Footprint of the Dairy Industry. Funded by the Dairy Farmers of Canada/Agriculture and Agri-Food Canada (Growing Forward I).
  • Towards determining protein requirements of the Aryrshire Cow: Effects of variation in metabolizable protein intake. Funded by Agrinova (Alma, Quebec).
  • Faba bean (Vicia faba) inclusion in dairy cow diets: Effect on nutrient digestion, rumen fermentation, nitrogen utilization, methane production, and milk performance. Funded by Agrinova (Alma, Québec).
  • Effects specific plant extracts on rumen microbial fermentation and methane production in vitro. Funded by IDÉNA (Sautron, France).
  • Effects of direct-fed microbials on rumen microbial fermentation and methane production. Funded by Bacterras Inc. (Montreal, Quebec).
  • Effects of herbs, spices and essential oils and their combination on rumen microbial fermentation and methane production. Funded by Ayurvet Ltd. (Baddi, India).

Professional activities / interests

  • Co-leader of the “Technical Advisory Group on Feed Additives” of the “Livestock Environmental Assessment and Performance (LEAP) Partnership” of the Food and Agriculture Organisation (FAO) of the United Nations (Rome, Italy).  Development of “Guidelines for Assessment of Environmental Performance of Feed Additives in Livestock Supply Chains”.
  • Eastern Director of the Canadian Society of Animal Science (2006-2008).
  • Associate Editor to the Canadian Journal of Animal Science (2003-2008).
  • Member of the Editorial Board of "Animals" Journal. https://www.mdpi.com/journal/animals/editors

Education and awards

  • Ph.D. in Animal Science (with distinction), Institut National Polytechnique de Toulouse, France. 1993.
  • Diplôme d’Étude Approfondies, Institut National Polytechnique de Toulouse, France. 1988.
  • M.Sc. in Animal Sciences, Institut National Agronomique, Algiers, Algeria. 1987.
  • Recipient of the Canadian Society of Animal Science Award-2020 in "Excellence in Nutrition and Meat Science".
  • Recipient of an Outstanding Presentation Award (Invited keynote speaker) delivered by "The Chinese Academy of Sciences” at the Third International Symposium on Sustainable Agriculture for Subtropical Regions" for presentation entitled "Nutritional Managements to Reduce Enteric Methane Production from Ruminants". October 20th, 2015, Changsha, China.

Key publications

  1. Little, S.M., Beauchemin, K.A., Benchaar, C., Chai, L.L., Janzen, H.H., Kröbel, R., McGeough, E.J., and VanderZaag, A.C. (2015). "Demonstrating the effect of diet on the carbon footprint of a Canadian dairy scenario using whole-systems analysis and the Holos model: corn silage vs. alfalfa silage.", LCA Conference XV - A bright green future, Vancouver, Canada, October 6-8, 2015, Presentation.

    2015 - View publication details

  2. Benchaar, C. (2015). "Mitigation of enteric methane emissions from dairy cows.", Dairy Agriculture Greenhouse Gas Program Science Coordination and Implementation Workshop, Ottawa, Canada, April 16-17, 2015, Invited speaker.

    2015 - View publication details

  3. Benchaar, C. (2015). "Nutritional management to reduce enteric methane production from ruminants.", 3rd International Symposium on Sustainable Agriculture for Subtropical Regions, Changsha, China, October 18-20, 2015.

    2015 - View publication details

  4. Hassanat, F. and Benchaar, C. (2015). "Methane and carbon dioxide emissions from manure of dairy cows fed regular or brown midrib corn silage-based diets.", Journal of Animal Science, 93(Suppl. S3), pp. 716. (Abstract)

    2015 - View publication details

  5. Ibeagha-Awemu, E.M., Li, R., Dudemaine, P.-L., Ammah, A.A., Bissonnette, N., Benchaar, C., and Zhao, X. (2015). "Mammary gland transcriptome profiling of cows fed safflower oil reveals a potential modulatory role for SREBP1 in fatty acid synthesis.", 2015 Conference of the Canadian Society of Animal Science and the Canadian Meat Council, Ottawa, Canada, May 6-8, 2015.

    2015 - View publication details

  6. Ammah, A.A., Beaudoin, F., Marier, L., Benchaar, C., Bissonnette, N., Gévry, G., and Ibeagha-Awemu, E.M. (2015). "Effects of dietary supplementation with safflower oil on milk components and fat acid composition of Canadian Holstein cows.", 2015 Conference of the Canadian Society of Animal Science and the Canadian Meat Council, Ottawa, Canada, May 6-8, 2015.

    2015 - View publication details

  7. Hassanat, F., Gervais, R., and Benchaar, C. (2015). "Methane production from dairy cows fed regular or brown midrib corn silage.", Journal of Animal Science, 93(Suppl. S3), pp. 449. (Abstract)

    2015 - View publication details

  8. Benchaar, C. (2015). Diet supplementation with cinnamon oil, cinnamaldehyde, or monensin does not reduce enteric methane production of dairy cows, 10(3), 418-425. http://dx.doi.org/10.1017/S175173111500230X

    2015 - View publication details

  9. Benchaar, C., Hassanat, F., Petit, H.V. (2015). Dose-response to eugenol supplementation to dairy cow diets: Methane production, N excretion, ruminal fermentation, nutrient digestibility, milk production, and milk fatty acid profile, 209 51-59. http://dx.doi.org/10.1016/j.anifeedsci.2015.07.027

    2015 - View publication details

  10. Benchaar, C., Hassanat, F., Martineau, R., Gervais, R. (2015). Linseed oil supplementation to dairy cows fed diets based on red clover silage or corn silage: Effects on methane production, rumen fermentation, nutrient digestibility, N balance, and milk production, 98(11), 7993-8008. http://dx.doi.org/10.3168/jds.2015-9398

    2015 - View publication details

  11. do Prado, R.M., Côrtes, C., Benchaar, C., Petit, H.V. (2015). Interaction of sunflower oil with monensin on milk composition, milk fatty acid profile, digestion, and ruminal fermentation in dairy cows, 207 85-92. http://dx.doi.org/10.1016/j.anifeedsci.2015.06.017

    2015 - View publication details

  12. Massé, D.I., Jarret, G., Benchaar, C., and Hassanat, F. (2014). "Effects of Adding Corn Dried Distiller Grains with Solubles (DDGS) to the Dairy Cow Diet and Effects of Bedding in Dairy Cow Slurry on Fugitive Methane Emissions.", Animals, 4(4), pp. 767-778. doi : 10.3390/ani4040767

    2014 - View publication details

  13. Royer, I., Chantigny, M.H., Angers, D.A., Rochette, P., Massé, D.I., Bittman, S., and Benchaar, C. (2014). "Trace metals content of soils and plants from different dairy manure types based on feeding and manure storage strategies", Annual meeting of the Canadian Soil Science Society, Banff, Alberta, Canada, May 4-7, 2014.

    2014 - View publication details

  14. Petit, H.V., de Lima, L.S., Palin, M.-F., Santos, G.T.D., and Benchaar, C. (2014). "Effect of Antioxidants from Flax meal on the Oxidative Status of Dairy Cows Infused With Flax Oil in the Abomasum.", Joint International Symposium on the Nutrition of Herbivores/International Symposium on Ruminant Physiology (ISNH/ISRP), Canberra, Australia, September 8-12, 2014, In: Proc. Aust. Soc. Anim. Prod. 30:83.

    2014 - View publication details

  15. dos Santos, G.T.D., de Marchi, F.E., de Lima, L.S., Palin, M.-F., Benchaar, C., and Petit, H.V. (2014). "Activity of Antioxidant Enzymes in Dairy Cows Infused with Sunflower Oil in the Abomasum: Effect of Antioxidants from Flax Meal.", Joint International Symposium on the Nutrition of Herbivores/International Symposium on Ruminant Physiology (ISNH/ISRP), Canberra, Australia, September 8-12, 2014, In: Proc. Aust. Soc. Anim. Prod. 30:68.

    2014 - View publication details

  16. Rico, D.E., Chouinard, P.Y., Hassanat, F., Benchaar, C., and Gervais, R. (2014). "Prediction of enteric methane emissions in Holstein dairy cows fed various forage sources.", Journal of Dairy Science (JDS), 97(E-Suppl. 1), pp. 918. (Abstract)

    2014 - View publication details

  17. Royer, I., Chantigny, M.H., Angers, D.A., Rochette, P., Massé, D.I., Bittman, S., and Benchaar, C. (2014). "La stratégie d’alimentation et de stockage du fumier de bovin laitier influence-t-elle le contenu en éléments traces métalliques des sols ?", Congrès annuel de l’AQSSS à Victoriaville, Québec, Canada, du 26 au 29 mai 2014.

    2014 - View publication details

  18. Benchaar, C., Hassanat, F., Gervais, R., and Martineau, R. (2014). "Methane production from dairy cows fed red clover- or corn silage-based diets supplemented with linseed oil.", Journal of Dairy Science (JDS), 97(E-Suppl. 1), pp. 853. (Abstract)

    2014 - View publication details

  19. Hassanat, F., Massé, D.I., and Benchaar, C. (2014). "Methane and carbon dioxide emissions from manure of dairy cows fed red clover- or corn silage-based diets supplemented with linseed oil.", Journal of Dairy Science (JDS), 97(E-Suppl. 1), pp. 740. (Abstract)

    2014 - View publication details

  20. Meale, S.J., Chaves, A.V., Mcallister, T.A., Iwaasa, A.D., Yang, W.Z., Benchaar, C. (2014). Including essential oils in lactating dairy cow diets: Effects on methane emissions1, 54(9), 1215-1218. http://dx.doi.org/10.1071/AN14152

    2014 - View publication details

Research facility

2000 College Street
Sherbrooke, QC J1M 1Z3
Canada

Affiliations

  • Associate Professor, Department of Animal Sciences, Laval University, Quebec, QC.
  • Adjunct Professor, Faculty of Agriculture, Dalhousie University, Halifax, Nova Scotia.
  • Adjunct Professor, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, P.R. China.
  • Member of the American Dairy Science Association (ADSA).
  • Member of the Canadian Society of Animal Science (CSAS).

Language

English
French