Uterine Prolapse in Sheep: Emergency Signs After Lambing

Uterine prolapse is when the uterus turns inside out and comes out through the vulva after lambing. In sheep, this usually happens immediately after birth or within several hours, while the cervix is still open and the uterus has poor tone. It is different from a vaginal prolapse, which happens before lambing and involves different tissue and different risk factors.

This is a life-threatening emergency. The exposed uterus can swell quickly, collect dirt and bedding, tear, or lose blood supply. In severe cases, major blood vessels can be damaged, and a ewe can go into shock or die if treatment is delayed.

Some ewes are still standing and alert when the prolapse is first noticed. Others become weak, keep straining, or lie down. The sooner your vet can clean, assess, and replace the uterus, the better the chance of recovery and future fertility.

For pet parents and small-flock shepherds, the safest next step is urgent veterinary help rather than trying forceful replacement at home. Gentle protection of the tissue while waiting for your vet can make a major difference.

Uterine prolapse happens when the uterus has poor tone after lambing and is pushed outward while the cervix is still open. Merck notes several contributing factors across species, including uterine atony, hypocalcemia, lack of exercise, excessive traction during difficult delivery, and retained fetal membranes. In sheep, estrogenic pastures are also listed as a possible contributing factor.

In practical flock terms, the problem often follows hard straining after delivery, a difficult lambing, twins or larger litters, or a ewe that is exhausted and slow to regain normal uterine tone. Low calcium may play a role in some cases because weak muscle contraction can make it harder for the uterus to tighten down after birth.

Not every ewe with these risk factors will prolapse, and some cases happen with little warning. That is why close observation during the first hours after lambing matters. If a ewe keeps pushing after the lambs are out, or if something that looks like afterbirth seems unusually large or organ-like, call your vet right away.

Diagnosis is usually based on the ewe's recent lambing history and the appearance of the tissue. Your vet will examine the prolapsed mass to confirm that it is uterus rather than vagina, assess whether fetal membranes are still attached, and look for swelling, contamination, tears, or tissue death.

Your vet also checks the ewe's overall stability. That can include heart rate, hydration, blood loss, ability to stand, and signs of shock. In some cases, your vet may evaluate for contributing problems such as hypocalcemia, severe exhaustion, or trauma from dystocia.

A key part of diagnosis is deciding whether the uterus is still healthy enough to replace safely or whether the damage is severe enough to require more intensive care. Your vet may also check that both uterine horns are fully returned after replacement, because incomplete replacement can trigger more straining and recurrence.

For flock managers, the most helpful information to share is the exact lambing time, whether assistance was needed, whether the placenta is still attached, how long the tissue has been exposed, and whether the ewe has been standing, eating, or continuing to strain.

Prevention starts with strong flock management before lambing. Good nutrition, appropriate body condition, exercise, and close observation around delivery all help reduce risk. Merck recommends evaluating body condition before breeding and avoiding both thin and obese animals. Ewes with a history of prolapse should generally be removed from the breeding pool.

Work with your vet on a lambing-season plan for dystocia, retained membranes, and metabolic disease. Prompt help during difficult births may reduce excessive traction and prolonged straining, both of which can contribute to prolapse. If your area has forage or pasture sources with estrogenic effects, ask your vet or extension team whether they could be relevant in your flock.

After lambing, watch ewes closely for continued pushing, weakness, or tissue appearing at the vulva. Early recognition is one of the most practical prevention tools for severe complications. A prolapse found quickly is often easier to treat and less likely to become contaminated or traumatized.

For future breeding decisions, ask your vet to help you review whether the ewe should remain in the flock. In many operations, a ewe with a prolapse history is not rebred because recurrence risk and lambing complications may be higher.