If an abort is recorded for an animal 152 DCC or greater, a fresh event is created, consistent with DHIA standards. Physical aborts that late and later can cause a new lactation. However, if you breed an animal or find the animal open and record a preg check for open, both will create an abort without the fresh event for a new lactation. This is because it is not a physical abort, and a lactation does not start by finding an animal open.

In practice for entry, if you have an abort that you want to start an animal on a new lactation, record an abort event by itself. If you want to mark an animal as open but do not want to start a new lactation, record a preg check of open, or record a possible abort chore. Recording a possible abort generally makes the most sense. This method will allow you to check the animal at preg check with all the other animals, and then determine what you want to do with her (ovsynch, continue heat breeding, DNB, cull, etc). At that time you record her open and it will not start a new lactation.