How many times can a horse breed in its lifetime?

Answer 1

Mares cycle every 21 days with the heat cycle lasting for around 6 days. During estrus the mare will accept the stallion multiple times a day or only once in a cycle.

Stallions that have several mares to breed and that have experience with a harem

may breed a mare once or several times in a cycle.

If the mare doesn't conceive the process starts again 14 days after the end of the previous cycle.

The stallion protects his harem from other stallions to insure that he is the sire of

his harem's offspring.

Mares will often accept only their herd stallion in an established broodmare band and mares will also protect another mare from enterlopers until the herd stallion runs the other stallion off.

In a domestic breeding enviroment stallions with large books will be bred to a mare

once a heat cycle with correct timing based on palpation or ultrasound determining the date and time.

Smaller operations may breed a mare every 35-48 hours until she is unreceptive.

Mares can be presented to multiple stallions in a single heat cycle but this defeats the purpose of controlled breeding where the breeder/owner knows the genetics of

the resulting foal.

Answer 2

No particular limit. It's like asking how many races it can run or how many times it can be groomed. More a matter of overall health and longevity.