The aim is to study the possibility to improve profitability on herd level in Swedish milk production by using sexed semen and genotyping heifers in the dairy herds and combine this with planned crossbreeding and use of beef semen. For this purpose we will estimate genetic progress and do economic calculations for breeding strategies with varying proportions of sexed semen and with or without genotyping heifers in 1) herds with both purebred and crossbred dairy cows and 2) herds with only purebred dairy cows. The effects of crossbreeding and use of beef semen will be considered in the calculations. To learn about the milk producer´s view on these breeding tools and possible practical obstacles and economical considerations that may affect the implication of these tools, we will perform depth interviews and a questionnaire survey. The results from the study can be used as a basis for advisory service for a more profitable milk production.