The overall objective of this project is to create milk biomarkers based on specific milk fatty acids for identification of cows with reproductive disorders and metabolic disturbances. Milk will be analysed by Fourier-transform mid-infrared technology. An important value of this project for the dairy farmers is that the milk analyses required for decisions will be readily available for advisors and farmers, as all cows in Swedish official milk recording system are already sampled monthly. There is great potential in so far unutilized data, especially in MFA which both have such a high concentration in the milk that they can be analyzed with a high accuracy and reflect the metabolism of individual cows. The goal is that all dairy farmers who are part of the SOMRS should be given the means to be able to take appropriate measures, at the individual, group and herd level, to facilitate sustainable milk production.