Surgical removal of one conceptus from fifteen mares with twin concepti.

D. R. Pascoe, Susan M Stover

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

A surgical technique for removal of one conceptus from mares with twin concepti more than 35 days of gestational age was evaluated. One conceptus was removed surgically from each of 15 mares carrying twin concepti that were 41 to 65 days of gestational age. As determined by ultrasonography, eight mares had bicornuate and seven mares had unicornuate twin concepti. For maintenance of pregnancy if surgical trauma should cause prostaglandin release and luteolysis, progesterone was administered prophylactically. Flunixin meglumine was administered perioperatively to minimize prostaglandin release. Five mares with bicornuate twin concepti delivered a single viable foal; in one mare the fetus was alive 4 days after surgery when the mare was euthanatized because of a fractured femur. None of the remaining feti in the seven mares with unicornuate twin concepti survived. The poor survival rate of unicornuate twin concepti was attributed to disruption of the remaining chorioallantois during surgery. Thirteen mares have been rebred successfully.

Original languageEnglish (US)
Pages (from-to)141-145
Number of pages5
JournalVeterinary surgery : VS : the official journal of the American College of Veterinary Surgeons
Volume18
Issue number2
StatePublished - Mar 1989

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conceptus
mares
Gestational Age
Prostaglandins
Fetus
Pregnancy Maintenance
Luteolysis
Ambulatory Surgical Procedures
Femur
Progesterone
Ultrasonography
Wounds and Injuries
surgery
gestational age
prostaglandins
fetus
flunixin
luteolysis
femur
foals

ASJC Scopus subject areas

  • veterinary(all)

Cite this

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abstract = "A surgical technique for removal of one conceptus from mares with twin concepti more than 35 days of gestational age was evaluated. One conceptus was removed surgically from each of 15 mares carrying twin concepti that were 41 to 65 days of gestational age. As determined by ultrasonography, eight mares had bicornuate and seven mares had unicornuate twin concepti. For maintenance of pregnancy if surgical trauma should cause prostaglandin release and luteolysis, progesterone was administered prophylactically. Flunixin meglumine was administered perioperatively to minimize prostaglandin release. Five mares with bicornuate twin concepti delivered a single viable foal; in one mare the fetus was alive 4 days after surgery when the mare was euthanatized because of a fractured femur. None of the remaining feti in the seven mares with unicornuate twin concepti survived. The poor survival rate of unicornuate twin concepti was attributed to disruption of the remaining chorioallantois during surgery. Thirteen mares have been rebred successfully.",
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