Fertility after fetotomy: a clinical study focusing on heavy draft mares.
Authors: Raś A, Rapacz-Leonard A, Raś-Noryńska M, Barański W
Journal: The Veterinary record
Summary
# Editorial Summary: Fertility outcomes in heavy draft mares following fetotomy Heavy draft mares presenting with severe fetal maldispositions—particularly head malpostures—represent a distinct clinical population with limited evidence regarding long-term reproductive prognosis after fetotomy. This Polish retrospective study examined medical records from 102 mares (93 heavy drafts) undergoing fetotomy, documenting survival rates, immediate postpartum complications, and subsequent breeding outcomes. Despite an 84.3% mare survival rate, postpartum endometritis occurred in nearly one-third of cases, with retained placenta affecting a further 28%, yet approximately 71% of surviving mares demonstrated normal oestrous cycles within the first breeding season; conception rates in bred mares remained modest at 31.1%, highlighting that while fetotomy preserves the breeding potential of dystocia cases, fertility recovery is not guaranteed. Delayed veterinary intervention—often attributable to the socioeconomic circumstances of heavy draft owners—significantly compromised both immediate survival and subsequent reproductive function, suggesting that early professional involvement is critical to optimising outcomes. For equine practitioners managing dystocic heavy mares, these findings support fetotomy as a pragmatic salvage procedure that compares favourably with alternative approaches in preserving both mare life and the opportunity for return to breeding, though owners should be counselled that aggressive postpartum management of uterine infection and meticulous monitoring through early cyclicity remain essential for maximising conception rates.
Read the full abstract on PubMed
Practical Takeaways
- •Fetotomy offers superior survival rates and faster return to breeding compared to cesarean section in heavy draft mares with serious maldispositions, particularly head malpostures
- •Plan for high postpartum complication rates (>60% of mares) and implement appropriate prophylactic and therapeutic protocols for endometritis and retained placenta
- •Delayed veterinary assistance significantly reduces mare survival and subsequent fertility; emphasize early intervention to farm owners regardless of economic constraints
Key Findings
- •Head malposture was the most common fetal maldisposition requiring fetotomy (62.7%)
- •Overall survival rate after fetotomy was 84.3% (86/102 mares)
- •Endometritis puerperalis and retained placenta were the most common postpartum complications (32.5% and 27.9% respectively)
- •70.9% of mares (61/86) demonstrated foal heat and regular cycling in the first season post-fetotomy, with 31.1% conception rate in bred mares (14/45)