Innovation, quality, variety and flexibility of production require sim
ultaneously an improvement of professional skills and an increase in c
ooperation. However, this cooperation should not be reduced to a mere
data exchange, but must extend to a co-construction of new representat
ions and new action schemes. In this way, health advising integrates p
roduction and knowledge apprenticeship, which we studied using a didac
tic approach (from the knowledge point of view). In this article, we w
ill establish that animal ecopathology, by the standardization of the
breeding description through diagnostic activity, has contributed to t
he strengthening of the cooperation between the breeder and the practi
cian.