Since the introduction of the fertility breeding values in the early 2000s, a trend has been recognizable in Holstein breeding that even today is unknown to many dairy farmers: an increase in production and improvement for fertility is not mutually exclusive. Indeed, the development toward this has long become reality. And there are many reasons for this. The most important: top farms for production and fertility are, in general, also top farms for genetics, management and feeding. Anyone who wants to improve fertility should deliver good work in every influential area. And in one area specifically.