ThePigSite Pig Health
Prolapse of the Vagina and Cervix
(286) Prolapse of the vagina and cervix is more common prior to farrowing and may be seen in the last third of pregnancy including the pre-farrowing period in the farrowing house. It occurs normally in about one pregnancy in 200, usually in older sows from 5th parity onwards. It is a response to increased abdominal pressure together with a relaxation of the internal structures that support the cervix or the neck of the womb. Older sows that are heavy in pig, with large litters and in very good condition are also more likely candidates.The following factors need to be considered as causal or contributing to the problem.
- It is much more common in older sows than young ones.
- Sows housed on tethers on slippery floors are more prone.
- When sows lie down there is an increased abdominal pressure which tends to force the cervix or vagina to the exterior.
- Fat sows are more prone as are those carrying large litters.
- It is common in sows that are lying in confinement on a floor that slopes too steeply to the rear.
- High levels of feed intake, particularly food containing high starch materials, produce abnormal fermentation, excess gas formation and an increase in abdominal pressure.
In the early stages the protruding tissues appear between the lips of the vulva and return to their normal position when the sow stands. However with advancing pregnancy the prolapse may remain to the exterior and as soon as this occurs the animal should be removed from it's existing environment and loose-housed. The tissues become swollen with time.
Diagnosis
The clinical signs are obvious but occasionally can be confused with vaginal polyps that may protrude from the vulva, and eversion of the bladder. Handling the tissues will differentiate.
Treatment
Management control and prevention
