What is the average gestation length of a mare?

The average gestation length for a mare typically falls within the range of 330 to 345 days. This timeframe reflects the normal expectations for horse breeding and foaling. Within this range, 335 to 342 days is often cited as the optimal gestation period.

Understanding the gestation length is crucial for breeding management and for ensuring that both the mare and foal are healthy throughout the pregnancy. Horses are generally considered full term between 320 and 365 days, but the majority will deliver within that specific range of 330 to 345 days. This knowledge aids breeders in planning for the care and management of the mare during the final weeks of pregnancy and for the foaling process.