Daniel Ouellet, Ph.D.

Research scientist

Our team is working on the protein metabolism of dairy cows including urea and endogenous secretions to accurately estimate nitrogen recycling and animal needs to reduce nitrogen loss to the environment increase the profitability of dairy farms.

Agriculture and Agri-Food Canada

Research and Development Centre, Sherbrooke

Key publications

Martineau, R., Ouellet, D.R., Kebreab, E., Lapierre, H. (2016). Casein infusion rate influences feed intake differently depending on metabolizable protein balance in dairy cows: A multilevel meta-analysis. Journal of Dairy Science (JDS), [online] 99(4), 2748-2761. http://dx.doi.org/10.3168/jds.2015-10427
2016 - View publication details
Ouellet, D.R., Maxin, M., and Lapierre, H. (2015). "Urea kinetics in dairy cows fed soybean meal (SBM), canola meal (CM), corn high protein dried distillers grains (HPDDG) or wheat dried distillers grains with solubles (WDDGS).", Journal of Dairy Science (JDS), 98(Suppl. 2), pp. 462. (Abstract)
2015 - View publication details
Ouellet, D.R. and Lapierre, H. (2015). "Endogenous Nitrogen Secretion in Dairy Cows: Transaction along the digestive tract and implication in amino acid requirements.", 29th ADSA Discover Conference on Amino Acid Requirements, Chicago, USA, May 26-29, 2015.
2015 - View publication details
Lapierre, H. and Ouellet, D.R. (2015). "How the efficiency of utilization of histidine varies with supply in dairy cows?", Journal of Dairy Science (JDS), 98(Suppl. 2), pp. 609. (Abstract)
2015 - View publication details
Lapierre, H., Ouellet, D.R., and Martineau, R. (2015). "Challenges to determine the true net supply of amino acids.", 29th ADSA Discover Conference on Amino Acid Requirements, Chicago, USA, May 26-29, 2015.
2015 - View publication details
Galindo, C., Larsen, M., Ouellet, D.R., Maxin, G., Pellerin, D., Lapierre, H. (2015). Abomasal amino acid infusion in postpartum dairy cows: Effect on whole-body, splanchnic, and mammary glucose metabolism. Journal of Dairy Science (JDS), [online] 98(11), 7962-7974. http://dx.doi.org/10.3168/jds.2014-9013
2015 - View publication details
Larsen, M., Galindo, C., Ouellet, D.R., Maxin, G., Kristensen, N.B., Lapierre, H. (2015). Abomasal amino acid infusion in postpartum dairy cows: Effect on whole-body, splanchnic, and mammary amino acid metabolism. Journal of Dairy Science (JDS), [online] 98(11), 7944-7961. http://dx.doi.org/10.3168/jds.2015-9439
2015 - View publication details
Artegoitia, V.M., de Veth, M.J., Harte, F., Ouellet, D.R., Girard, C.L. (2015). Short communication: Casein hydrolysate and whey proteins as excipients for cyanocobalamin to increase intestinal absorption in the lactating dairy cow. Journal of Dairy Science (JDS), [online] 98(11), 8128-8132. http://dx.doi.org/10.3168/jds.2015-9678
2015 - View publication details
Ouellet, D.R., Lobley, G.E., and Lapierre, H. (2014). "Histidine requirement of dairy cows determined by the indicator amino acid oxidation (AAO) technique.", Journal of Dairy Science (JDS), 97(E-Suppl.1), pp. 757. (Abstract)
2014 - View publication details
Ouellet, D.R. and Lapierre, H. (2014). Endogenous secretions in dairy cows - Advance Report (Period: October 22th, 2013 – July 21th, 2014). (Report)
2014 - View publication details
Lapierre, H., Doepel, L., Pacheco, D., and Ouellet, D.R. (2014). "Amino acid requirement and post-absorptive metabolism in cattle: implications for ration formulation.", Florida Ruminant Nutrition Symposium, University of Florida, Florida, USA, pp. 167-168.
2014 - View publication details
Lapierre, H., Ouellet, D.R., Fournier, A., and Pellerin, D. (2014). "Comment maximiser l’utilsation de l’azote des vaches laitières: répercussions environnementales et monétaires.", 38e Symposium sur les bovins laitiers. CRAAQ, Québec, QC, Canada, pp. 35-53.
2014 - View publication details
Lapierre, H., Ouellet, D.R., and Lobley, G.E. (2014). "Estimation of histidine requirement in lactating dairy cows.", Journal of Dairy Science (JDS), 97(E-Suppl.1), pp. 757. (Abstract)
2014 - View publication details
Martineau, R., Côrtes, C., Ortigues-Marty, I., Ouellet, D.R., Lapierre, H. (2014). Evaluation of equations predicting the net portal appearance of amino acid nitrogen in ruminants. Journal of Dairy Science (JDS), [online] 97(3), 1670-1681. http://dx.doi.org/10.3168/jds.2013-7249
2014 - View publication details
Martineau, R., Ouellet, D.R., Lapierre, H. (2014). The effect of feeding canola meal on concentrations of plasma amino acids. Journal of Dairy Science (JDS), [online] 97(3), 1603-1610. http://dx.doi.org/10.3168/jds.2013-7125
2014 - View publication details
Ouellet, D.R., Tremblay, G.F., and Mustafa, A.F. (2013). "Evaluation of DM, NDF, and starch ruminal degradabilities of corn hybrids : A three-year study.", Advances in Dairy Technology (Western Canadian Dairy Seminar Proceedings), 25, pp. 387. (Abstract)
2013 - View publication details
Larsen, M., Galindo, C.E., Ouellet, D.R., Maxin, G., Kristensen, N.B., and Lapierre, H. (2013). "Effect of abomasal amino acid infusion on splanchnic metabolism in postpartum transition dairy cows.", in Oltjen, J.W., Kebreab, E. and Lapierre, H. (eds.) - Energy and protein metabolism and nutrition in sustainable animal production. EAAP publication No. 134., Wageningen Academic Publishers, The Netherlands, pp. 409-410.
2013 - View publication details
Galindo, C.E., Larsen, M., Ouellet, D.R., Maxin, G., Pellerin, D., and Lapierre, H. (2013). "Effect of amino acid supply on whole body and tissue glucose kinetics in postpartum dairy cows.", in Oltjen, J.W., Kebreab, E. and Lapierre, H. (eds.) - Energy and protein metabolism and nutrition in sustainable animal production. EAAP publication No. 134., Wageningen Academic Publishers, The Netherlands, pp. 451-452.
2013 - View publication details
Ouellet, D.R., Valkeners, D., and Lapierre, H. (2013). "Effects of metabolizable protein supply on N efficiency; plasma amino acid concentrations in dairy cows.", in Oltjen, J.W., Kebreab, E. and Lapierre, H. (eds.) - Energy and protein metabolism and nutrition in sustainable animal production. EAAP publication No. 134., Wageningen Academic Publishers, The Netherlands, pp. 453-454.
2013 - View publication details
Artegoitia, V.M., de Veth, M.J., Harte, F., Ouellet, D.R., and Girard, C.L. (2013). "Casein and whey protein as delivery methods for synthetic vitamin B12 to increase intestinal absorption in lactating dairy cows.", Journal of Dairy Science (JDS), 96(E-Suppl. 1), pp. 505.
2013 - View publication details