The demand for organic dairy products has been increasing recently. This production system is not devoid of complications, particularly when it comes to animal welfare. The need to produce without synthetic chemicals is oftentimes a challenge when treating ailments.
Over the past decades, the Holstein breed has undergone the process of extreme selection which emphasized production and conformation rather than fertility and health. This, along with an increasing average inbreeding of Holstein cows, has promoted the use of crossbreeding in U.S. dairy farms.