DNB (Do Not Breed) Event

The DNBClosed Do Not Breed event identifies an animal as "Do Not Breed" to keep it from all breeding activity. This event is also automatically added to heifer calves born as a twin or triplet to a bull (freemartinClosed A female that is born as a twin or triplet with a bull and may be sterile as a result of exposure to hormones produced by the male in utero.). Expand the sections below to learn more: