Survival rate and short-term fertility rate associated with the use of fetotomy for resolution of dystocia in mares: 72 Cases (1991-2005)

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Abstract

Objective - To determine survival rate, complications, and short-term fertility rate after fetotomy in mares. Design - Retrospective study. Animals - 72 mares with severe dystocia. Procedures - Records from 1991 to 2005 were searched for mares with dystocia in which a fetotomy was performed. Data relating to presentation and position of foals; survival rate, complications, and short-term fertility rate in mares; and 45-day pregnancy rate in mares bred 2 to 3 months after fetotomy were recorded. Results - Anterior fetal presentation was detected for 54 of 72 (75%) mares, posterior presentation was detected for 13 (18.1%), and transverse presentation was detected for 5 (6.9%). One fetus in anterior presentation was hydrocephalic. Survival rate after fetotomy was 95.8%. Complications included retained fetal membranes (5.5%), laminitis (6.9%), vaginal and cervical lacerations (2.8%), and delayed uterine involution (2.8%). Mares bred 2 to 3 months after fetotomy had good short-term fertility, with a mean pregnancy rate of 79.4% at 45 days after breeding. Conclusions and Clinical Relevance - The survival rate was high, compared with rates reported after cesarean section, and short-term fertility rate was similar to those reported for mares that had a controlled vaginal delivery or cesarean section. Fetotomy performed by a skilled veterinarian on a nonviable fetus should be considered as a means of quick and safe correction of dystocia that does not necessarily impair short-term fertility in affected mares.

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APA

Carluccio, A., Contri, A., Tosi, U., De Amicis, I., & De Fanti, C. (2007). Survival rate and short-term fertility rate associated with the use of fetotomy for resolution of dystocia in mares: 72 Cases (1991-2005). Journal of the American Veterinary Medical Association, 230(10), 1502–1505. https://doi.org/10.2460/javma.230.10.1502

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