Petit, Hélène, Ph.D.

Research Scientist

Contact Information:

2000 College Street
Sherbrooke, Quebec J1M 0C8
Telephone: 819-780-7210
Fax: 819-564-5507
Email: helene.petit@agr.gc.ca

Areas of Expertise:

  • general - embryonic mortality
  • supplements and additives - protein and energy concentrates
  • feeding experiments - feeding experiments versus effects on reproduction
  • feeding experiments - nutrient level and availability
  • feeding experiments - product quality
  • feeding experiments - digestibility
  • development and appraisal of analytical methods
  • feedstuff evaluation
  • supplements and additives - lipids and fatty acids
  • components - fatty acids and lipids
  • components - digestibility and nutrient value
  • conventional and new feedstuffs - plant material
  • animal nutrition
  • antioxidant
  • biochemistry
  • animal physiology
  • dairy cattle
  • feedstuff utilization and development

Current Projects:

  • Effects of dietary fatty acids on expression of genes involved in establishment of pregnancy of dairy cows
  • Improving milk composition and oxidative status by feeding different fatty acids and antioxidants

Affiliations:

  • Sub-committee, Flax 2015 "Livestock Health and Performance Working Group"
  • Member of the Editorial Advisory Board for the international scientific journal Animal Feed Science and Technology
  • Canadian delegate on the International Scientific Committee of the International Symposium on Ruminant Physiology

Research Publications:

The links below lead to abstracts with access to full text.

2013:

2012:

2011:

2010:

2009:

Other Science Related Publications:

2012:

  • Benchaar, C., Hassanat, F., Gervais, R., Chouinard, P.Y., Julien, C., Massé, D.I., and Petit, H.V. (2012). "Effect of increasing amounts of corn dried distillers′ grains with solubles in dairy cow diets on enteric methane emissions, digestibility, and milk production.", Journal of Dairy Science (JDS), 95(Suppl. 2), pp. 597 (#W277). (Abstract)
  • Benchaar, C., Hassanat, F., Gervais, R., Chouinard, P.Y., Julien, C., Massé, D.I., and Petit, H.V. (2012). "Effect of increasing amounts of corn dried distillers′ grains with solubles in dairy cow diets on enteric methane emissions, digestibility, and milk production.", ADSA-AMPA-ASAS-CSAS-WSASAS 2012 Joint Annual Meeting, Hyatt Regency, Phoenix, AZ, USA, July 15-19, 2012.
  • Palin, M.-F., Hallé, C., Goff,, A.K., Petit, H.V., and Blouin, R. (2012). "Effects of the Omega-6/Omega-3 Fatty Acid Ratios and of Enterolactone on Dairy Cow Endometrial Cells.", AAFC Scientific Symposium: Let’s talk science at DSRDC, Sherbrooke, QC, Canada, November 28, 2012. (Poster)
  • Palin, M.-F., Hallé, C., Goff,, A.K., Petit, H.V., and Blouin, R. (2012). "Effects of the Omega-6/Omega-3 Fatty Acid Ratios and of Enterolactone on Dairy Cow Endometrial Cells.", Society for the Study of Reproduction 45th Annual Meeting and 18th Ovarian Workshop, Pennsylvania State University, State College, PA, USA, August 12-15, 2012, Abs. 338. (Abstract)
  • Petit, H.V., do Prado, R.N., Palin, M.-F., and Benchaar, C. (2012). "Milk production, milk composition and blood parameters of cows fed whole flaxseed or whole linola.", Journal of Dairy Science (JDS), 95(Suppl. 2), pp. 611 (#W318). (Abstract)
  • Santos, N.W., dos Santos, G.T.D., da Silva-Kazama, D.C., Grande, P.A., Pauli, L., Jobim, C.C., and Petit, H.V. (2012). "Composição em ácidos graxos do leite de vacas alimentadas com silagem de resíduo de uva [Milk fatty acid profile of cows fed grape residue silage].", 49th Reunião Annual da Sociedade Brasileira de Zootecnia [SBZ 2012], Brasilia, DF, Brazil, July 23-26, 2012. (Abstract)

2011:

  • Boroski, M., Giroux, H.J., Sabik, H., Petit, H.V., Pintro, P.T.M., Britten, M., and Visentainer, J.V. (2011). "Aspectos físico-químicos de bebidas lácteas (2% de óleo de linhaça) formuladas com a adiçao de extrato de orégano ou óleo essencial de orégano [Physico-chemical aspects of dairy beverages (2% of flax oil) containing oregano extract or oregano essential oil].", Simposio Latino Americano de Ciência de Alimentos, Campinas, São Paulo, Brazil, November 5-8, 2011. (Abstract)
  • Boroski, M., Giroux, H.J., Sabik, H., Petit, H.V., Pintro, P.T.M., Britten, M., and Visentainer, J.V. (2011). "Estudo comparativo da eficiência de extrato de orégano ou óleo essencial de orégano na proteçao lipídica de bebida láctea enriquecida com óleo de linhaça [Comparative study of the efficiency of oregano extract or oregano essential oil to protect dairy beverages eniched in flax oil].", Simposio Latino Americano de Ciência de Alimentos, Campinas, São Paulo, Brazil, November 5-8, 2011. (Abstract)
  • Palin, M.-F., Beaudry, D., Vallée, M., Bissonnette, N., Murphy, B.D., and Petit, H.V. (2011). "Development of a two-species cDNA microarray for transcriptional profiling of sow reproductive traits.", 60th Annual Meeting of the Canadian Society of Animal Science (CSAS), Atlantica Hotel, Halifax, NS, Canada, May 4-5, 2011, Published in: J. Anim. Sci., 91(3), pp. 476-477.
  • Petit, H.V. (2011). "Effect of concentration of flax hulls in the diet on intake, digestion, milk production, and milk composition of dairy cows.", Journal of Animal Science, 89(E-Suppl. 1), pp. 368. (Abstract)
  • Ross, S., Brito, A.F., Petit, H.V., and Soder, K.J. (2011). "Effects of cornmeal or molasses supplemented with different protein sources on milk production and Nitrogen utilization of organic dairy cows.", Journal of Dairy Science (JDS), 94(E-Suppl. 1), pp. 622. (Abstract)
  • Santos, N.W., dos Santos, G.T.D., Pintro, P.T.M., Grande, P.A., da Silva-Kazama, D.C., and Petit, H.V. (2011). "Concentration and activity of antioxidants in milk of dairy cows fed soybean oil-based diets with different concentrations of grape residue silage.", XXII Reunión Latinoamericana de Producción Animal, Montevideo, Uruguay, October 24-26, 2011, Published in: Archivos Latinoamericanos de Producción Animal. (Abstract)
  • Santos, N.W., dos Santos, G.T.D., da Silva-Kazama, D.C., Valotto, A., and Petit, H.V. (2011). "Milk production and composition of dairy cows fed soybean oil-based diets with different concentrations of grape residue silage.", XXII Reunión Latinoamericana de Producción Animal, Montevideo, Uruguay, October 24-26, 2011, Published in: Archivos Latinoamericanos de Producción Animal. (Abstract)

2010:

  • Benchaar, C., Yang, W.-Z., Petit, H.V., and Chouinard, P.Y. (2010). "Effects of eugenol addition on milk fatty acid composition of dairy cows fed high- or low-concentrate diets.", Journal of Animal Science, 88(E-Suppl. 2), pp. 428 (#T373). (Abstract)
  • Palin, M.-F., Petit, H.V., Beaudry, D., Côrtes, C., Gagnon, N., Lacasse, P., and Benchaar, C. (2010). "Effect of flax oil and flax hulls on mRNA abundance of antioxidant enzymes and lipogenic-related genes in the mammary gland of dairy cows.", Journal of Animal Science, 88(E-Suppl. 2), pp. 717 (#W405). (Abstract)
  • Petit, H.V., Côrtes, C., Kazama, R., da Silva-Kazama, D.C., dos Santos, G.T.D., Zeoula, L.M., Gagnon, N., and Benchaar, C. (2010). "Effect of flax hulls in the diet and infusion of flax oil in the abomasum on absorption of the mammalian lignan enterolactone in dairy cows.", Journal of Animal Science, 88(E-Suppl. 2), pp. 726 (#W435). (Abstract)

2009:

  • Benchaar, C., Yang, W.-Z., Petit, H.V., and Chouinard, P.Y. (2009). "Effects of eugenol Supplementation on feed intake, nutrient digestibility, nitrogen retention, milk production, and milk composition of dairy cows fed high- or low-concentrate diets.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009.
  • Benchaar, C., Yang, W.-Z., Petit, H.V., and Chouinard, P.Y. (2009). "Effects of eugenol supplementation on feed intake, nutrient digestibility, nitrogen retention, milk production, and milk composition of dairy cows fed high- or low-concentrate diets.", Journal of Animal Science, 87(E-Suppl. 2), pp. 277 (#T254). (Abstract)
  • Benchaar, C., Yang, W.-Z., Petit, H.V., and Chouinard, P.Y. (2009). "Effects of eugenol supplementation on ruminal fermentation characteristics, protozoa counts, and in situ ruminal degradation of soybean meal, grass/legume hay, and corn grain in dairy cows fed high- or low-concentrate diets.", Journal of Animal Science, 87(E-Suppl. 2), pp. 276 (#T253). (Abstract)
  • Benchaar, C., Yang, W.-Z., Petit, H.V., and Chouinard, P.Y. (2009). "Effects of eugenol supplementation on ruminal fermentation, protozoa counts, and in situ ruminal degradation of soybean meal, grass/legume hay, and corn grain in dairy cows fed high- or low-concentrate diets.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009.
  • Brito, A.F., Tremblay, G.F., Bertrand, A., Castonguay, Y., Bélanger, G., Michaud, R., Lapierre, H., Benchaar, C., Petit, H.V., Ouellet, D.R., and Berthiaume, R.R. (2009). "Alfalfa Cut At Sundown and Harvested As Baleage Increases Performance of Late-Lactation Dairy Cows.", 27th Western Canadian Dairy Seminar (WCDS): Forging Ahead Through Challenging, Capri Centre, Red Deer, AB, Canada, March 10-13, 2009, Session VII: Focus on Forage, pp. 368. (Abstract)
  • Côrtes, C., da Silva, D.C., Benchaar, C., Kazama, R., dos Santos, G.T.D., Zeoula, L.M., and Petit, H.V. (2009). "The interaction of flaxseed hulls and monensin on feed intake, apparent digestibility, and milk composition of late-lactating dairy cows.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009.
  • Côrtes, C., da Silva, D.C., Kazama, R., Gagnon, N., Benchaar, C., dos Santos, G.T.D., Zeoula, L.M., and Petit, H.V. (2009). "Milk fatty acid composition of dairy cows fed whole flaxseed or/and Ca-salts of flaxseed oil.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009.
  • Côrtes, C., da Silva, D.C., Kazama, R., Gagnon, N., Benchaar, C., dos Santos, G.T.D., Zeoula, L.M., and Petit, H.V. (2009). "The interaction of flaxseed hulls and monensin on feed intake, apparent digestibility, and milk composition of late-lactating dairy cows.", Journal of Animal Science, 87(E-Suppl. 2), pp. 283 (#T274). (Abstract)
  • Côrtes, C., da Silva, D.C., Kazama, R., Gagnon, N., Benchaar, C., dos Santos, G.T.D., Zeoula, L.M., and Petit, H.V. (2009). "The interaction of flaxseed hulls and monensin on milk fatty acid composition of late-lactating dairy cows.", Journal of Animal Science, 87(E-Suppl. 2), pp. 285 (#T282). (Abstract)
  • Côrtes, C., da Silva, D.C., Kazama, R., Gagnon, N., Benchaar, C., dos Santos, G.T.D., Zeoula, L.M., and Petit, H.V. (2009). "The interaction of flaxseed hulls and monensin on milk fatty acid composition of late-lactating dairy cows.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009.
  • Farmer, C., Giguère, A., Lessard, M., and Petit, H.V. (2009). "Feeding flax to late-pregnant and lactating sows: Effects on fatty acid profiles, hormones and performances of sows and their litters.", Journal of Animal Science, 87(Suppl. 2), pp. 64. (Abstract)
  • Gagnon, N., Côrtes, C., Benchaar, C., and Petit, H.V. (2009). "Mammalian lignan enterolactone concentration in milk of dairy cows fed different levels of flaxseed hulls.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009.
  • Hallé, C., Petit, H.V., Beaudry, D., Vallée, M., Bissonnette, N., Murphy, B.D., and Palin, M.-F. (2009). "Un nouvel outil moléculaire pour l’identification des gènes impliqués dans la survie embryonnaire chez la vache laitière.", 33e Symposium sur le bovin laitier, Best Western Hôtel Universel, Drummondville, QC, Canada, October 29, 2009.
  • Hallé, H., Petit, H.V., Beaudry, D., Vallée, M., Bissonnette, N., Murphy, B.D., and Palin, M.-F. (2009). "Profilage de transcrits dans l’embryon au moment de l’implantation chez des vaches nourries avec un supplément de graines de lin.", 2e Symposium du Réseau Québécois en Reproduction (RQR), Delta Centre-Ville, Montréal, QC, Canada, November 17-18, 2009.
  • Lessard, M., Petit, H.V., Giguère, A., and Farmer, C. (2009). "Feeding flax to late-pregnant and lactating sows: Effects on sow immunity and antibody transfer to their piglets.", Journal of Animal Science, 87(Suppl. 2), pp. 62-63. (Abstract)
  • Palin, M.-F., Beaudry, D., Vallée, M., Bissonnette, N., Murphy, B.D., and Petit, H.V. (2009). "Development of a two-species cDNA microarray for transcriptional profiling of sow and dairy cow reproductive traits.", ADSA-CSAS-ASAS 2009 Joint Annual Meeting, Montréal Convention Center, Montréal, QC, Canada, July 12-16, 2009, Published in: J. Anim. Sci., 87(E-Suppl. 2), pp. 399, #W47.
  • Petit, H.V., Côrtes, C., Gagnon, N., Palin, M.-F., Tao, S., Benchaar, C., and Lacasse, P. (2009). "Flax hulls and oil supplementation on the activity of antioxidant enzymes in dairy cows.", XIth International Symposium on Ruminant Physiology, Clermont-Ferrand, France, September 6-9, 2009, pp. 630-631.
  • Petit, H.V., Gagnon, N., and Palin, M.-F. (2009). "Influence of fatty acids on reproduction and immune function in ruminants.", 30th Western Nutrition Conference, Fort Garry Hotel, Winnipeg, MB, Canada, September 23-24, 2009.