Q: When is the best age to breed a mare? A: Most vets and breeding specialists recommend breeding a mare between four and twelve years of age. Why not younger? Physically, a mare reaches maturity around four years old. Breeding younger than this (two to three years) is possible but not advisable: her body is…
Q: When is a stallion most fertile? A: Fertility in stallions is highest from six years of age until they are somewhere between 12-15 years of age. After this fertility tapers off through their late teens and drops again more dramatically once they are over 20. It should be noted, however, that this does vary greatly among…
If you are the owner of a colt, you have undoubtedly been asked if and when you are going to geld your youngster. In fact, you may have even found yourself wishing you'd had a filly, just to avoid having to make this tricky call. As with most horse-related issues, there are lots of opinions…
Asked by Ansi van der Merwe Mares can continue to produce foals well into their late teens and even into their early to mid-twenties. However, breeders should be aware that the fertility of mares decreases each year from around fifteen years of age. An older mare who has had a foal earlier in her life…

