Social factors related to mastitis control practices: The role of dairy farmers' knowledge, attitude, values, behaviour and networks

It is often assumed that knowledge is an important factor influencing the preventative and curative behaviour of farmers with regard to mastitis. In this study we explore systematically the relative importance of farmers' knowledge vis-a-vis other social and contextual factors. A longitudinal study was set up in which the effectiveness of an ambitious mastitis reduction programme will be monitored by an integral analysis of technical and social variables. This paper presents the outcomes of a quantitative baseline survey of 378 Dutch dairy farmers. This survey was preceded by a qualitative exploratory study amongst farmers and veterinarians, which served to develop relevant survey questions and working hypotheses. A first analysis of the survey data suggests that -contrary to the dominant view - a lack of general knowledge and problem awareness are not the key factors explaining the non-utilization of specific preventative and curative practices. Instead, external triggers (such as sanctions, problems and incentives), internal normative beliefs and farmers' perceived self-efficacy seem to be the key factors affecting mastitis control practices. The survey also shows that, on the topic of mastitis, veterinarians appear to be the most influential actor in the network surrounding farmers. Finally, the paper discusses several implications for an intervention programme and for further research.