Little had been known about the impact of beef semen on the dairy cow until a project at Pennsylvania State University that was summarized in the Journal of Dairy Science.
. . . using beef sires on your dairy herd isn’t going to hurt a herd of high-producing dairy cows.” – Bailey Basiel, PhD candidate
Source: STgenetics, January 10, 2024. Link. Basiel reports there was a slight increase in stillbirth risk in the crossbred beef category but no effect on dystocia risk. Researchers studied metabolic events, reproductive events, mastitis, and lameness and still found nothing different with the cows bred to beef.
Also see: Search results for: beef on dairy, AHD Archives. Link.