The use of antimicrobials in the pig sector in the Netherlands has been reduced with more than 72% over the last decade. However, there is still a considerable number of pig farms that have not been able to lower their antimicrobial usage (AMU) to a sufficiently low level, comparable to the majority of the other pig farms. Therefore, an intervention study was initiated to lower the antimicrobial use in which 45 pig farms with high AMU were recruited. These farms were coached over a period of two years whereby different management interventions were introduced.