This allows the herd to be more consistent and allows the producer to avoid extremes when marketing their calves. Health problems and injuries can lead to culling. Prolapses are a reason to consider culling. There are vaginal and uterine prolapses. A vaginal prolapse is a good reason to cull.
Uterine prolapses occur around calving time.
They can be caused by a difficult birth. If repaired correctly, uterine prolapses are less of a risk to occur again. One of their research projects used performance data from 156 straightbred Hereford, Angus and Shorthorn females and compared it to the same data from 172 crossbred cows of the same breeds. The crossbreds excelled in every area. Even input costs were significantly reduced in the crossbreds.