Two year's practice mainly in dairies (Normandy). Then, vet practitionner in the ruminant hospital of Vet School of Lyon; After 3 years, I prepared my PhD to obtain the degree and the right to apply for assistant professor in Vet School of Lyon (1999). Researcher in Unit research : Animal mycoplasmosis, I work with ruminant mycoplasmosis. I also develop some external and applied research in other fields for students professional thesis.