
Every stallion owner’s worst nightmare: 2 months into the breeding season and your stallion is not settling his mares. His bloodlines are impeccable, and he had a great start to his performance career so this year you offered to stand him at stud to outside mares, and the response has been great, 40 mares booked in his first season! As a responsible and experienced stallion owner, you had a breeding soundness examination done and he passed with flying colors; good testicular size, good sperm production, good motility, concentration and morphology and his semen responded very well in a 48-hour cooled semen trial. He should be able to handle a book of 40 mares without problems. So why isn't he settling his mares?