Should You Breed Your Mare

Here's the thing nobody wants to hear: most mares shouldn't be bred. I know that sounds harsh, but it's true. Breeding isn't a thing you do because you have a nice mare and thought it might be cool to have a foal. Breeding is something you do because you have a mare with specific qualities that the horse world needs more of, you have the resources to do it right, and you're prepared for all the ways it can go wrong.

Breeding is expensive. We're talking thousands of dollars before you have a foal in the ground. Vet checks, breeding soundness exams, stallion fees, prenatal care, foaling supplies, emergency vet fund for complications. Then you have a newborn that needs care, needs its own vet bills, needs its own feed, needs training or at least basic handling. If you're not prepared to spend real money, breeding probably isn't for you.

Breeding takes knowledge. You need to understand conformation. You need to understand genetics enough to know what a mare passes to her offspring. You need to know bloodlines, pedigrees, what crosses work and what don't. You need to understand what the breed standard actually is and whether your mare meets it. You can't just breed two horses that look nice and hope for the best. That's how you end up with foals with genetic problems, conformational issues, or temperament problems that make them difficult or impossible to place.

Breeding ties up your mare for a year minimum. She's pregnant for eleven months, then she has a foal to recover from, then she's nursing for months. During this whole time, she can't really be ridden. She can't be the horse you've been riding and loving. If your mare is your riding partner and you're not okay with taking a year off from her, don't breed her.

Breeding means taking responsibility for a foal's entire life, or at least for placing it responsibly. If you breed a foal and can't sell it, you can't just ignore it. It's your responsibility. You need to feed it, care for it, train it or get it trained, eventually find it a home. If you can't commit to that, breeding isn't the right move.

So when should you breed? When you have a truly quality mare that represents something valuable to the breed. When you have the money to do it right. When you have the knowledge to make good breeding decisions. When you have the time and space to care for a mare and foal. When you have a plan for selling the foal or keeping it. When you're ready for all the things that can go wrong during pregnancy and foaling.

The actual breeding process is straightforward, but the decision-making that leads to breeding is complex. It starts with honest assessment: Is your mare worth breeding? This isn't about whether she's a nice horse. Lots of nice horses shouldn't be bred. This is about whether she has qualities that would genuinely benefit from being passed on to another generation.

Take conformation. Does your mare have good structure? Sound joints? Balanced build? Or does she have issues—a short stride, a weak back, straight hocks, poor shoulder angle? If she has conformational flaws, breeding might pass those flaws to a foal who's in the world because you wanted a baby horse. That's not fair to the foal.

Take temperament. Is your mare naturally calm, willing, eager to please? Or is she hot, nervous, difficult, unpredictable? Temperament is heritable. A foal from a nervous mare often carries that nervousness. Is that what you want to add to the breeding pool?

Take performance. If she's a saddle horse, can she do the job she was bred for? Or is she just a horse you happen to ride? If she has legitimate performance ability, maybe breeding makes sense. If she's average or below, probably not.

Take health. Is she sound? Does she have any genetic issues? Any health problems that might be heritable? A mare with navicular disease, for example, probably shouldn't breed. A mare with a history of colic or other chronic issues probably shouldn't breed. You'd be betting that her foal won't inherit these problems, and that's not a bet worth making.

Take age. A mare in her prime—say seven to twelve years old—is an ideal breeding candidate if she's otherwise suitable. A very young mare (under five) is usually too immature physically to breed. An older mare (over eighteen or so) carries more risk for complications during pregnancy and foaling. Not impossible, but riskier.

Take your goals. If you want a horse for yourself to ride, breed for that. If you want to start a breeding program, be clear about what you're trying to accomplish. Are you improving the breed? Creating horses for a specific discipline? Just wanting to experience the miracle of a newborn? Be honest about your motivation, because your motivation affects whether breeding is the right choice.

Once you decide yes, you're committing to the entire process. Vet checks, finding the right stallion, managing the breeding, monitoring the pregnancy, preparing for foaling, handling the newborn foal, managing the mare's recovery, and eventually dealing with rehoming the foal or keeping it. There's no short version of this.

If you decide to breed, there are practical things you need to manage before, during, and after breeding. First, get a breeding soundness exam. This is a vet checking your mare to make sure she's physically capable of breeding safely. The vet is looking for reproductive tract health, overall soundness, any issues that might complicate pregnancy or foaling.

Second, get a realistic sense of what you're spending. Stallion fees can range from a few hundred dollars for a standing fee to thousands for a well-known sire. Some stallion owners require a live cover only, some allow artificial insemination, some require you to haul your mare to their facility. Factor in hauling costs, boarding costs if you're taking her somewhere, your time. Add vet checks during breeding season—your mare might not conceive on the first try. Add prenatal care. Add foaling supplies and emergency vet fund. Add the first year's feed and care for a foal. You're looking at minimum a few thousand dollars, potentially much more depending on the stallion and your situation.

Third, have a plan for the foal. Will you keep it and train it? Sell it as a weanling? A yearling? Will you register it? What breed? What discipline are you aiming for? This affects which stallion makes sense to breed to. You don't breed a draft mare to a thoroughbred stallion unless you have a specific reason. You don't breed a western pleasure mare to a racing bloodline unless you know what you're doing.

Fourth, prepare your mare physically. Make sure she's at a good weight—not obese, not thin. Make sure she's healthy and in good condition. If she's been ridden hard, give her time off to recover before breeding season. Mares that are in peak athletic condition sometimes don't cycle well during breeding season. There's a balance.

Fifth, understand breeding season. Most mares cycle in spring and summer when daylight increases. Some mares cycle year-round, but the best fertility is March through August. If you're breeding in these months, your chances are better. If you're trying to breed in winter, know that you're working against biology.

Sixth, manage the actual breeding. Whether it's live cover or AI, there's timing involved. The mare has to be in estrus—a specific stage of her cycle. Breeding at the wrong time of her cycle usually doesn't result in pregnancy. This is where a vet familiar with breeding helps. They can do ultrasounds to see the mare's reproductive state and tell you when to breed.

Breeding doesn't always work. Your mare might not get pregnant on the first try, second try, or at all. Some mares are difficult to breed. Some have uterine infections or scarring from past pregnancies that make conception hard. Some have hormonal issues. Sometimes you breed once and it takes. Sometimes you breed multiple times over multiple cycles and nothing happens.

Pregnancy complications happen. A mare can lose a pregnancy at any stage. Early loss, before you even know she was pregnant. Mid-pregnancy loss, which is heartbreaking because you're already attached. Late pregnancy loss, which is an emergency situation. Why does this happen? Sometimes a foal has genetic issues incompatible with life. Sometimes the mare's body rejects the pregnancy. Sometimes there's no clear reason.

Foaling complications are real. A mare can founder after foaling. She can have uterine rupture. She can hemorrhage. A foal can be breached and need emergency extraction. A mare can have Red Bag delivery, which is an emergency. A foal can be born with the amniotic sac not broken and suffocate. A foal can have angular limb deformities that need immediate attention. An umbilical cord can be infected, leading to sepsis. These aren't common, but they're not rare either, and they're expensive and sometimes fatal.

The foal itself might have problems. Genetic defects, conformational issues, growth problems, neurological problems. Some of these show up immediately. Some develop over time. As the breeder, you're responsible for dealing with these issues either by paying for treatment or making hard decisions about the foal's future.

Not all foals are healthy or normal. You might breed perfect parents and get a foal with a crooked leg, a cleft palate, or genetic issues you didn't anticipate. You might breed and get a filly when you desperately wanted a colt, or vice versa. You might breed and get a foal that's either too small or too large for the breed standard. When these things happen, you still have to care for the foal. It's your responsibility.

Your mare might not be a good mother. Some mares reject their foals. Some don't produce enough milk. Some are aggressive around the foal. If your mare turns out to be a problem mother, you might need to bottle-feed a foal, which is labor-intensive and expensive. Or you might need to find a nurse mare, which costs significant money.

Mares sometimes have lasting effects from pregnancy and foaling. A mare that was injury-free before breeding might come back from foaling with a bowed tendon, a soft tissue injury, or chronic lameness. Sometimes they recover. Sometimes they're permanently affected. Sometimes they can never be ridden again.

If you're serious about breeding, get a good vet involved from the start. I don't mean a general practitioner who treats your horse's colic and dental issues. I mean a vet who does equine reproduction. Reproductive vets know how to do breeding soundness exams properly. They know how to manage mares through breeding season. They know how to time breeding. They know how to monitor pregnancy. They know how to handle complications. They're worth every penny.

A breeding mentor makes a huge difference if you're new to this. Someone who's actually bred horses, had success, had failures, learned from both. They can tell you whether your mare is breeding quality. They can help you choose a stallion. They can walk you through the process. They can talk you out of breeding if it's not the right move for your situation. This kind of mentorship is invaluable.

If you're buying a stallion for breeding or standing him at stud, know what you're buying. Get a breeding soundness exam on him too. Get proof that he's fertile, that his semen is viable, that he can do the job. Some stallions have fertility issues that make them unsuitable for breeding even if they're nice horses to ride.

If you're sending your mare to a breeding facility or standing your stallion there, understand the liability and insurance implications. What happens if something goes wrong with your mare while she's being boarded? What happens if your stallion injures another horse? Have conversations about responsibility and insurance before breeding happens.

Before you breed, talk to a veterinarian about the costs and risks. Have a realistic conversation. Know what emergency vet care during foaling costs. Know that you might need to pay thousands in emergency vet bills if things go wrong. Know that you might lose the mare or foal. Know that veterinary intervention costs money. Go into breeding with eyes open.

Breeding should be a deliberate choice based on honest assessment of your mare's quality, your resources, your knowledge, and your commitment. It's not something to do casually or because you think it might be fun. The stakes are too high.

If you breed, breed for reasons that matter. You're adding a horse to the world. That horse might live thirty years. Make sure you're adding something valuable, not just something you created.

Have the difficult conversation with yourself before you breed. Can you afford this? Do you have the knowledge? Is your mare worth breeding? Are you prepared for everything that might go wrong? Is this really the right move for your situation right now?

If the answer to any of these is no, then don't breed. There's no shame in that. Most mares shouldn't be bred. If you love your mare, sometimes the best thing you can do is not breed her, just enjoy riding her and caring for her. That's enough. It really is.