RCMS Research Chair in Meat Safety

Sandrine Trudeau

The transmission of the fecal microbial ecosystem from the hen to   the surface of the egg, and evaluation of the influence of the birds feeding and housing system on this transmission


In poultry farming, both in broiler and in eggs productions, microbial populations on the surface of the eggshell after oviposition are still poorly known but may have an impact on the chick (future chicken or laying hen). I am interested in the transmission to its surface of the first bacteria encountered by the egg: those of the mother's digestive tract. I hope to identify among these bacteria those that attach preferentially to the surface of the eggshell, to understand if they are protective or rather at risk for the chick when it hatches. Therefore, I will try to evaluate the impact of the feed distributed to the birds and their housing (in cage or free range) on the orientation of their intestinal microbial flora, and therefore on the evolution of the surface flora of the egg. My work will help to better understand the role of this evolution in public health (eggs and meat), animal health and animal welfare.

Masters in veterinary science, animal health and food safety option

Supervisor: Philippe Fravalo

Co-supervisors: Marie-Lou Gaucher and Alexandre Thibodeau

Academic Background : Bachelor's degree in biology (UdeM)

Certificate in technology and food safety (UdeM)



Scientific publications:

Scientific articles

Published abstracts (conference proceedings)


  • Trudeau Sandrine, A. Thibodeau, M-L. Gaucher , P. Fravalo. La diversité des microbiotes de surface des oeufs pondus par les oiseaux reproducteurs chair au Québec selon le troupeau, et l’évolution dans le temps. Journée de la recherche FMV, 8 novembre 2018, Saint-Hyacinthe, Québec, Canada.
  • Trudeau Sandrine, A. Thibodeau, M-L. Gaucher , P. Fravalo. À la découverte d'un monde, sans casser d'oeufs! Colloque étudiant du Consortium de recherche et d'innovations en bioprocédés industriels au Québec (CRIBIQ), 23-24 octobre 2018, Drummondville, Québec, Canada.


Graduated in Master in veterinary science, animal health and food safety option


Current situation: works by F. Ménard