There is a scientific debate on impacts of private stakeholders increase in agricultural extension services.Some social scientists consider that concurrence goes against investment in new techniques. However, in the past many agricultural innovationshave been promoted by private stakeholders, for example in organic farming and conservation agriculture. At present time, European Union encourages farming sector to reduce antibiotic use, in order to avoid antibiotic resistances in human medicines. In consequence, farmers show great interest for alternative medicine, like those promoted by atypical veterinarians: homeopathy, aromatherapy, plant and manual medicines.