As soon as estimation of ovulation is predicted, contact should be made with the stallion manager to coordinate desired semen delivery dates with the stallion's collection schedule. Once the semen shipment arrives, the semen must be evaluated prior to insemination of the mare. First, examine any and all paperwork that accompanies the semen. Then evaluate the semen shipment for the quality and violability. The progressive motility of the semen is then estimated.
Progressive motility is the movement of sperm in a fairly straight line.
This is a sample of a good quality semen shipment. Sperm that are not moving or swimming in circles most likely won't result in pregnancy. Also any discoloring or debris in the semen should be noted and most likely be refused for insemination. If the received semen is not acceptable, the stallion manager should be contacted as soon as possible and options discussed. Also note, that most stallion's semen will maintain viability for 48 hours after collection.