During the third trimester of pregnancy, keep an eye out for vaginal prolapse in your cowherd. Vaginal prolapse occurs in very late gestation, near the time of calving. Vaginal prolapse is, as the name implies, a protruding of the vaginal tissue through the vulva where it is exposed to sun, wind, and infectious pathogens. Vaginal prolapses are genetic in nature and though repaired, will likely reoccur next year before her next calf. This type of prolapse is known to have a genetic component, which means that daughters of cows that have this problem will have an increased likelihood of suffering a vaginal prolapse themselves.

Because the propensity to have a vaginal prolapse is passed on to her offspring, any cow with this malady should be marked for culling and her daughters should not be kept as replacements. Certainly bull calves from this cow also could pass the genetic characteristics on to his offspring, proliferating the problem within a herd.