The Complete Guide to Big Horse Breeding: Bloodlines, Management, and Care

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Foaling management in heavy breeds leaves zero margin for delays. Stage two labor, from the rupture of the chorioallantoic membrane to the complete expulsion of the foal, must conclude within 15 to 25 minutes. If progress stalls, mechanical intervention is urgent.

Dystocia occurs more frequently in heavy draft mares than in light horse breeds. Broad shoulders, thick stifle development, and exceptional leg length create tight clearances through the maternal pelvic canal. A common complication is unilateral shoulder flexion, where the foal presents with one leg back. Given the physical weight of a 130-to-160-pound draft foal, correcting malposture demands immediate veterinary obstetrics; manual manipulation within the birth canal requires substantial physical endurance and specialized lubricants.

Post-delivery monitoring must be swift. Draft mares show an increased incidence of retained fetal membranes (placental retention past three hours post-foaling). Retained tissue rapidly triggers endotoxemia, systemic sepsis, and severe laminitis, often fatal in an animal carrying a ton of body weight. Prophylactic oxytocin protocols and gentle uterine lavages are standard tools for draft equine practitioners.

For the neonate, checking passive transfer of immunity is vital. Colostrum quality must be tested immediately with a Brix refractometer; readings above 22% indicate adequate immunoglobulin G (IgG) concentrations. Because draft foals consume large volumes of milk, an IgG blood evaluation conducted at 12 hours post-foaling ensures serum levels exceed 800 mg/dL. Any deficit calls for an immediate commercial frozen plasma transfusion.