Pascoe D R, Stover S M
Department of Reproduction, School of Veterinary Medicine, University of California, Davis 95616.
Vet Surg. 1989 Mar-Apr;18(2):141-5. doi: 10.1111/j.1532-950x.1989.tb01058.x.
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.
对一种从妊娠龄超过35天的怀有双胎的母马中移除一个胎儿的手术技术进行了评估。从15匹怀有妊娠龄为41至65天双胎的母马中，每匹手术移除一个胎儿。经超声检查确定，8匹母马怀有双角双胎，7匹母马怀有单角双胎。为防止手术创伤导致前列腺素释放和黄体溶解而维持妊娠，预防性给予孕酮。围手术期给予氟尼辛葡甲胺以尽量减少前列腺素释放。5匹怀有双角双胎的母马产下了一匹存活的小马驹；在一匹母马中，术后4天胎儿存活，随后因股骨骨折对该母马实施了安乐死。7匹怀有单角双胎的母马中，其余胎儿无一存活。单角双胎的低存活率归因于手术期间剩余绒毛膜尿囊的破坏。13匹母马已成功再次配种。
