Prolapse before parturition in cattle known as..?

Prolapse of the vagina/cervix before parturition (pre-partum) in cattle is known as vaginal prolapse or more specifically pre-partum vaginal prolapse.
The condition where the vagina prolapses before calving is termed "prolapsus vaginae" - commonly called vaginal prolapse ante-partum.
However, the classic veterinary terminology for this specific condition is:
"Prolapsus Vaginae" (ante-partum / pre-partum vaginal prolapse)
Key points:
  • It occurs in late pregnancy (last trimester), most commonly in beef cows
  • The vaginal floor/wall protrudes through the vulva before calving
  • It is distinct from uterine prolapse, which occurs after parturition
  • Predisposing factors: increased intra-abdominal pressure, relaxation of perineal tissues due to estrogen/relaxin, short body conformation, high parity, and high body condition score
So in short: prolapse before parturition = vaginal prolapse (prolapsus vaginae) Prolapse after parturition = uterine prolapse (prolapsus uteri)

Search for clinical images of vaginal prolapse in cattle

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vaginal prolapse cattle clinical images bovine

Here are clinical images of vaginal prolapse in cattle, sourced from veterinary literature:

Image 1 - Vaginal Prolapse (Springer Nature / Clinical Atlas)

Vaginal prolapse in cattle - Fig 1

Image 2 - Vaginal Prolapse (Clinical View)

Vaginal prolapse in cattle - Fig 2

Image 3 - Bovine Vaginal Prolapse (Research Journal)

Bovine vaginal prolapse clinical image

Image 4 - Prolapse with cervical involvement

Bovine cervico-vaginal prolapse

Grading Reference (from Merck Veterinary Manual):

GradeDescription
Grade IIntermittent - visible only when recumbent, resolves on standing
Grade IIContinuous acute prolapse of vaginal tissue
Grade IIIContinuous prolapse of vagina + bladder + cervix
Grade IVChronic prolapse with trauma, infection, or necrosis
The prolapsed tissue classically appears as a pink-to-red glistening mass protruding from the vulva, ranging in size from a grapefruit to a large melon in severe cases. Progressive swelling, edema, and mucosal trauma worsen the condition if untreated.
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