Current health management practices in livestock farming are not sustainable, mostly because they select pathogens resistant to treatments. If integrated pest management is a common and accepted practice in agriculture, its animal counterpart is way behind. In other words, integrated health management in animal production embeds in so few practices that farmers do not recognize and advocate it per se. In this context, research and development is needed 1) to identify and design innovative livestock systems and management tools in line with integrated health management principles and 2) to better understand innovation dynamics in livestock farming. This article contributes to the latter. The aim of our study was to explore how knowledge and information circulate among farmers, and between farmers and non-farmer stakeholders around the theme of parasitism control. For this purpose, we carried out a questionnaire-based survey among 536 dairy-sheep farmers in the Pyrénées-Atlantiques (France). We analysed knowledge networks for parasitism control by listing whom farmers talk to when dealing with parasitism control. We identified the kind of individuals likely to be contacted by farmers depending on the farming system and the farmers’ representations. Results are discussed in terms of implications for developing integrated health management programs that take into account the diversity of health management actors and farmers identities.