As part of a case study conducted in the undergraduate course of Veterinary Medicine of the State University of Santa Catarina (UDESC), Brazil, freshmen and senior students were interviewed for identifying how they perceive their activities as refers to Preventive Veterinary Medicine and Public Health. Taking the ideas of Ludwik Fleck as a theoretical framework, a correspondence was established among the different fields of activity in Veterinary Medicine and the variations in "thought styles", a key idea in Fleck's epistemology, allowing for the definition of analytical categories. It was verified that the teaching in the field of veterinary medicine leads to a thought style giving little importance to collective and preventive concepts. In the end of the article, we emphasize the importance of integration between the different fields of actions of the profession for a better professional education based on the National Guidelines and Bases for Education of 19965.