After breeding how long to birth?

The gestation period for horses is approximately 11 to 12 months, or about 340 days. The actual time to birth can vary by a few days, so it's important to keep an eye on your mare's physical signs and behavior as her due date approaches. In the last few weeks of pregnancy, your mare's belly will be very full, and her udder will be enlarged and firm. She may also have a thick, waxy discharge from her vulva. In the few days leading up to birth, she may become restless and agitated, and she may start to dig at the ground or paw at bedding. When she goes into labor, she will lie down and begin to push. The foal should be born within a few minutes, and the mare should deliver the placenta within 15 to 20 minutes after the foal is born.