What is a Gelding Horse?

Nothing in the horse world is quite straightforward. Instead of calling the different aged horses simply “foals” and “adults”, we went and complicated things by adding “colt”, “filly”, “mare”, “gelding” and “stallion” to the mix.

Although I can probably write an entire dictionary on horse terms, I’ll stick to answering any questions about geldings in this article.

What does Gelding Mean?

But first, let’s get to the most obvious answer to “What is a gelding?”.

A gelding is a male horse that has been castrated – similar to how you neuter a male dog. He can no longer be used for breeding purposes and is typically a much calmer and nicer horse to ride.

There is much more to a gelding than that basic definition, so keep reading to find out the history of the practice and why racehorses often undergo this procedure.

Defining a Gelding Horse

As I mentioned, a gelding is a male horse that has been castrated. Before the gelding procedure, he was considered a stallion.

Simple, right?

Why Do We Geld a Horse?

A young horse is typically gelded before it turns a year old. Gelding is often performed when the horse is still a foal, before it becomes a yearling, to help influence its growth and behavior. This procedure is usually done before the horse reaches sexual maturity, as gelding prior to sexual maturity helps prevent hormonal behaviors and makes the horse easier to manage.

Once the horse is over a year and reaches sexual maturity, it becomes feisty because of testosterone – it will fight other male horses, be a bit aggressive, and be downright stubborn.

Of course, not all stallions are rude like that, so I am generalising here. However, not all geldings are wonderful, calm-riding horses, either.

But, usually, a gelding is much easier to train, easier to handle and easier to ride.

Gelding versus Stallions: Behavioral Changes After Gelding

So, how does castration affect our horses?

Well, again these are just general statements, as each horse is a little bit different from the next. But, geldings tend to grow a bit taller than stallions. They are much calmer and do not exhibit stallion-like behaviours.

Stallions are able to reap the positive (and negative) benefits of testosterone for much longer, and some believe they are much more muscular because of this.

Some riders don’t enjoy riding mares during their heat cycles when they can become a bit moody, and a gelding is a much wiser choice for riders who do not want to deal with temperamental horses. In such cases, geldings can be easier to handle. Choosing a gelding offers additional advantages, such as their gentle nature, reliability, and the safety they provide to both riders and trainers.

Of course, in wild herds, the male horses remain stallions, but their environment allows it. Today it’s rare to find a domesticated stallion being turned out with other stallions or geldings. Being un-castrated means your horse will mostly live a solitary life and may display aggressive behaviour.

Why Are Horses Gelded?

Most of us find it relatively simple to control a horse. We simply pull on the reins to stop it, give it a squeeze to get it going, slip on a halter after a ride, and lead our horse to where we want it to go.

What we take for granted is that a horse is 500 to 1,000 kgs of muscle and bone.

Get yourself an ill-mannered stallion, whihc shows aggressive behaviour and suddenly you will not have such an easy time riding and leading your horse.

And that is the main reason why we geld a horse. What happens when a horse is gelded is that it calms down.

I’ve visited stables before where stallions come with their own set of rules. Only certain people are allowed to interact with them, only certain horses can be stabled near them, and don’t even think you can ride him past the mares’ paddock.

Even older stallions can be gelded to improve their behavior and allow them to live more peacefully in a pasture with other horses.

By removing the testicles and reducing the testosterone levels in a male horse, you are left with a calmer and more manageable horse that is great for beginner riders.

History of Gelding Horses

The history of gelding is very interesting.

Let me first draw the attention of Lord of the Rings fans: remember the riders of Rohan that dominated the planes on horseback, and had a somewhat startled-looking white horse on their flags?

J.R.R. Tolkien based these fearless riders on the Scythians, a culture that lived in Central Asia between the 9th and 7th centuries BC. These horse experts wanted well-behaved war horses that could be kept together in large groups, and so they gelded their stallions.

Aristotle mentions gelding in his historical writings from 350 BC, highlighting that the practice of gelding male horses has a long-standing tradition and has been going on for thousands of years.

Why are Racehorses Gelded?

If stallions have more muscle and a will to fight, then why are our top racehorses gelded?

It’s a good question, especially if you consider that owners would want their winning racehorses to be able to produce offspring that are even faster – and make a lot of money from breeding them.

So why forgo all this cash by gelding a male horse?

Firstly, as I mentioned, stallions are not exactly the easiest horses, and racehorses need to be well-trained and relatively well-mannered riding horses.

Stallions are not banned from horse racing, but there are some races where only geldings, or only stallions, are allowed to compete.

When it comes to breeding racehorses, stud colts are usually kept on stud farms where they become full-fledged stallions. Their offspring are then gelded and used for racing. If the offspring performs well, it reflects on the stud, who can then earn its keep by producing more star racehorses.

The Gelding Procedure

Gelding a male horse, also known as equine castration, is a standard veterinary surgery performed by a vet at the stables. The surgical approach may vary depending on the horse’s breed, as different breeds can have anatomical differences that affect technique.

The horse is sedated (no one wants a kick in the face), and either local (for standing castration) or general anaesthesia (for lying down) is administered.

During the procedure, a precise skin incision is made to access the testes (testicles) and associated structures, including the epididymis and part of the spermatic cord. The anatomy of the testis is carefully considered to ensure proper removal.

In open castration, which is a common technique, the vaginal tunic is incised to allow direct access to the testis, differing from closed castration where the tunic is left intact. The actual operation only takes about 15 minutes, and your horse will be mostly recovered from the anaesthesia within 45 minutes.

After surgery, establishing adequate drainage through the incision is crucial to prevent infection, especially in open procedures. Swelling is a common postoperative response and is usually managed with exercise and wound care to promote healing and reduce complications.

Castration Methods

When it comes to castrating male horses, veterinarians have a couple of main techniques at their disposal: standing castration and recumbent castration. In standing castration, the horse is sedated and local anesthesia is used to numb the area, allowing the vet to remove the testicles through a small incision in the scrotum while the horse remains upright. This method is often chosen for its simplicity and because it generally carries a lower risk of complications, such as excessive bleeding or infection, since the horse is less likely to injure itself during recovery.

Recumbent castration, on the other hand, involves putting the horse under general anesthesia so it is fully asleep and lying down. This approach gives the veterinarian more control over the surgical environment and is often preferred for younger or more spirited horses, or when a more controlled setting is needed to minimize risk. In both methods, the testicles, epididymis, and a portion of the spermatic cord are surgically removed, which effectively eliminates the production of male hormones and helps reduce stallion-like behaviors. The choice between standing and recumbent castration depends on the horse’s temperament, the veterinarian’s experience, and the specific circumstances of the procedure. Regardless of the method, the goal is to make the horse easier to handle and safer for everyday work and training.

Alternative Castration Methods

While traditional standing and recumbent castration remain the gold standard for most horses, animal science is always looking for new ways to improve animal welfare. Alternative castration methods, such as immunocastration and laparoscopic castration, are being explored by equine practitioners. Immunocastration uses vaccines to suppress testosterone production, aiming to reduce stallion-like behaviors without surgery. Laparoscopic castration, meanwhile, is a minimally invasive procedure where the testicles are removed using a small camera and specialized instruments, resulting in smaller incisions and potentially faster recovery.

Despite their promise, these alternative methods are not yet widely used in horses. Limited research, availability, and long-term data mean that most veterinarians and the American Association of Equine Practitioners still recommend tried-and-true techniques like standing castration and recumbent castration. As research in animal science continues, equine practitioners keep a close eye on these developments to ensure the best care for horses, always weighing the benefits and risks of each castration method.

Cryptorchidism in Horses

Cryptorchidism is a condition in male horses where one or both testicles fail to descend into the scrotum.

Horses with this condition, often called rigs or ridglings, can still produce male hormones, which means they may continue to display stallion-like behaviors and can be more challenging to manage.

Cryptorchidism not only affects behavior but also increases the risk of testicular complications, including cancer.

Managing a cryptorchid horse often requires special attention from both owners and veterinarians. Surgical removal of the retained testicle is usually necessary to prevent ongoing hormone production and reduce the risk of health issues.

This procedure can be more complex than standard castration, as the undescended testicle may be located in the abdomen or inguinal canal rather than the scrotum. The Old Norse word “gelda,” meaning to castrate, highlights how long humans have been dealing with these issues in horse management. If you suspect your horse may be cryptorchid, it’s important to consult a veterinarian for a careful check and appropriate treatment to ensure the health and safety of both the horse and those who handle it.

Training and Performance of Geldings

Geldings are often the stars of the show when it comes to training and performance in a wide range of equestrian disciplines. By removing the influence of male hormones through castration, geldings tend to be less distracted by other horses and are less likely to display aggressive behaviors. This makes them easier to handle and more focused during training sessions, which is a huge advantage for riders of all experience levels.

Whether it’s dressage, show jumping, eventing, or even leisure riding, geldings are prized for their steady temperament and willingness to work. Unlike stallions, who may be more unpredictable or easily distracted, geldings are known for their consistent performance and ability to form strong partnerships with their riders.

Their calm demeanor also makes them a popular choice for group activities and competitions, where working harmoniously with other horses is essential. With the right training and care, geldings can excel in almost any discipline, making them a favorite among riders and trainers alike.

Social Dynamics: Geldings in Herds

Geldings play a vital role in the social structure of both wild and domestic horse herds. Thanks to their calm and gentle nature, geldings help to reduce aggressive behaviors and create a more peaceful environment for all horses.

In wild herds, geldings can act as stabilizers, helping to keep the peace and reduce competition among stallions, which can otherwise lead to fights and injuries.

In domestic settings, geldings are often turned out with mares and other geldings, as their even temperament minimizes the risk of aggressive interactions. This makes herd management much simpler and safer for horse owners.

The presence of geldings in a herd can also help reduce stress and anxiety among the horses, leading to a more relaxed and harmonious group dynamic. Understanding the social role of geldings is key for anyone managing a herd, as it allows for better planning and a more balanced, happy equine community.

Caring for a gelded horse

As it’s such a minor procedure, caring for your castrated male horse is also quite straightforward.

You might need to give it some antibiotics to keep infections at bay and keep the incision clean.

Your horse can undergo some light exercise during the recovery period; just a short walk will do. For older horses, controlled and moderate exercise such as hand walking is recommended during recovery to promote healing and minimize risks.

You’ll notice that the effects of the male hormones tend to subside within a couple of weeks, leaving you with a happy, healthy and huggable horse.

Controversy Surrounding the Practice

Not everybody supports the act of gelding, although there really aren’t any disadvantages to the practice, apart from not being able to use your castrated male horse for breeding purposes.

Still, some cultures don’t geld their horses.

Arabs have traditionally used mares as war horses or working horses. Stallions were kept apart from the main herd, and only the top males were used for breeding.

Jewish law prohibits the castration of any animals, and therefore there are no geldings in Jewish societies either.

What is the Gelding Equivalent for Female Horses?

When a female horse is sterilised, it’s called spaying.

However, where castrating a male horse is a common procedure, spaying of female horses is incredibly rare. Spaying is a very invasive procedure where the entire uterus is removed in a vet clinic. It’s only done in instances where the horse’s health depends on it or when the mare is aggressive towards other horses and people due to hormone imbalances.

A female horse can become moody and unruly during her heat cycle, but that is never a good reason for spaying. It can have long-term health impacts and long recovery times, and is very expensive.

FAQs

What happens when a horse gets gelded?

Horses are considered gelded when they are a castrated male horse. Their testicles, epididymis and a portion of the spermatic cord are surgically removed.

Can a gelded horse still breed?

No, gelded horses cannot be used for breeding and are no longer fertile. Both of the horse’s testicles, as well as the supporting structures, are completely removed.

What is the best age for gelding a horse?

Colts should be gelded after three months but before they are one year old. The earlier you geld a colt, the better. Otherwise, it might start acting aggressively towards other horses and learning some bad behaviours.

Can a stallion and a gelding live peacefully together?

On rare occasions, yes, but it’s generally not recommended. Stallions can be aggressive towards other males and are best kept with mares and foals. Geldings can be kept together with other geldings or mares, as their temperament is calmer than that of a stallion.