Colic in horses – causes, symptoms and what you can do in an emergency

Colic in horses is one of the most frightening topics for many horse owners, and rightly so. Hardly any other horse disease occurs so suddenly, follows such different courses, and can become so dangerous in a serious case. Colic is not a single clinical picture, but rather a collective term for painful conditions in the horse's gastrointestinal tract. It affects the sensitive digestive system, more precisely the stomach, small intestine, large intestine, and the entire abdominal cavity.

In this article, we will guide you and explain in an understandable way what horse colic is about, what causes it, how to recognize signs of colic, what is important in an emergency, and what role feeding, exercise, and management play. Objective, caring, and designed to make you feel more confident as a horse owner.

What does colic in horses actually mean?

The term colic describes pain in the area of the gastrointestinal tract. This is not a single disease, but a collective term for various illnesses and conditions in the abdominal cavity. These can affect the stomach, the small intestine, the large intestine, or the entire abdominal cavity.

Colic in horses is so treacherous because the horse's digestive tract has anatomical peculiarities. The horse is a constant grazer with a relatively small stomach, a very long intestine, and sensitive digestive processes. Even small changes can cause big problems.

Why is colic one of the most common horse diseases?

Almost every horse owner experiences colic in their horse at some point – whether in a mild form or as an acute emergency. This is partly because horses in the wild graze on small amounts of grass almost continuously and move a lot. However, in modern horse husbandry, other conditions often prevail:

• limited exercise
• low-fiber feed
• feeding errors
• rapid feed changes
• stress
• restricted access to water

All of this can throw the sensitive gastrointestinal tract out of balance and promote digestive disorders.

The horse's gastrointestinal tract – a sensitive area

To better understand colic, it is worth taking a look at the horse's gastrointestinal tract. The stomach is very small in relation to body size and holds only about 15 to 20 liters. It is not designed to take in large amounts of feed at once. If too much feed enters the stomach at once, it can lead to gastric impaction.

The small intestine is about 20 meters long and is responsible for nutrient absorption. This is followed by the large intestine, where crude fiber from grass and hay is processed with the help of microorganisms. This is also where the majority of the intestinal contents are located. Especially in the large intestine, problems such as impaction, fermentation, or twists frequently occur.

What types of colic are there?

Depending on the cause and the affected area, different types of colic are distinguished. Each type of colic has its own peculiarities, symptoms, and progression. For you as a horse owner, it is important to know that every form must be taken seriously. The most common types of colic are impaction colic, gas colic, spasmodic colic, sand colic, volvulus, intestinal entrapment, and gastric impaction.

Impaction colic

Impaction colic is one of the most common forms of colic in horses. It involves a blockage of feed in the intestine, often in the large intestine. Causes can include insufficient water intake, dry feed, lack of exercise, or inappropriate horse feeding. The intestinal contents become firm, the intestine can no longer move properly, and abdominal pain occurs.

Gas colic

With gas colic, gases form excessively in the intestine. These lead to a painful distension of the intestinal wall. This type of colic often occurs in connection with feed changes, fresh grass during the pasture season, or fermenting feed.

Spasmodic colic

Spasmodic colic is characterized by severe spasms in the gastrointestinal area, which are very painful. It often follows a wave-like pattern, with phases of pain and short periods of rest. Causes can be stress, feeding errors, or sudden changes.

Gastric impaction

In the case of gastric impaction, the stomach is filled with too much feed. Since horses cannot vomit, this condition is particularly dangerous. Gastric impaction can lead to severe pain and, in the worst case, be life-threatening.

Intestinal entrapment and blockages

Intestinal entrapment, twists, or an intestinal blockage are among the most severe colic cases and are life-threatening conditions that require rapid action. The intestine twists or is blocked at one point. Blood flow can be impaired, leading to severe damage. These cases are always an absolute emergency and require immediate veterinary attention.

Recognizing signs of colic – typical symptoms in horses

The symptoms of colic in a horse can be very different and range from mild discomfort to severe pain. Some horses show clear symptoms, while others initially only appear slightly restless. It is important that you know your horse well and take changes in behavior seriously.

Typical signs of colic in a horse are:

• Restlessness and frequent lying down
• Rolling or attempting to roll
• Pawing with the front hooves
• Looking at the belly or kicking at the belly
• Sweating without physical exertion
• Increased heart rate and rapid breathing
• Loss of appetite
• Bloated belly
• Cramps
• Lethargy or discomfort

Not every horse shows all signs. Especially quiet colics are often underestimated. If you suspect that your horse has abdominal pain, you should always remain vigilant.

Colic in horses – an emergency?

Yes. Every colic is an emergency until proven otherwise. Even if the symptoms appear mild, the condition can deteriorate rapidly. Therefore: It is better to contact the veterinarian once too often than too rarely.

Veterinarians decide on the further course of action based on the examination, pulse, bowel sounds, temperature, and, if necessary, laboratory values such as PAT values. The sooner treatment begins, the better the chances.

Causes of colic in horses

The causes of colic in horses are manifold. Often, several factors act together.

Feeding and feeding errors

Horse feeding is one of the most important points when it comes to colic. Common causes are:

• excessive amounts of feed at once
• too little roughage
• poor quality or moldy feed
• too fast a feed change
• too much concentrated feed
• insufficient water intake

Sudden feed changes, for example when grazing starts in the pasture season, put a heavy strain on the gastrointestinal tract.

Grass and pasture season

Fresh grass contains a lot of sugar and can quickly lead to digestive disorders in unaccustomed horses. Especially in spring or autumn, when the grass fluctuates significantly, caution is required. Slow grazing and adjusted exercise are crucial here.

Exercise and management

Exercise supports intestinal activity. If a horse stands for a long time without sufficient exercise, the intestine can become sluggish. Stress, transport, or changes in daily routine can also promote colic.

Special considerations for foals

Colic in foals can have different causes than in adult horses. Blockages due to meconium, infections, or malformations play a larger role here. The rule also applies to foals: Seek veterinary help immediately if there are any signs.

Treatment of colic in a horse

The treatment always depends on the type of colic, the condition of the horse, and the progression. In many cases, the veterinarian can help with medication for pain and spasms. Sometimes infusions are necessary to stabilize the fluid balance. The treatment costs for a colic depend heavily on the severity of the case.

As part of the treatment, antispasmodic and analgesic drugs are frequently administered. They are intended to alleviate pain and restart intestinal activity so that the horse's condition can stabilize.

In severe cases such as intestinal twists or a blockage, surgery may be necessary. Even though this represents a great fear for many horse owners, it can be life-saving in certain cases.

What you can do in an emergency

If you suspect colic in your horse, you should remain calm and act in a structured manner:

• Observe the horse and assess symptoms
• Inform the veterinarian immediately if you suspect colic
• Stop offering food
• Keep the horse moving, as long as it allows
• Prevent rolling if possible
• Keep an eye on pulse, breathing, and behavior

Please never administer medication on your own without consulting the veterinarian.

Prevention – how you can prevent colic

Although not every colic in horses can be completely prevented, you can significantly reduce the risk with careful management. The basis is always horse-appropriate keeping, well-thought-out horse feeding, and sufficient exercise – because all this keeps the sensitive gastrointestinal tract in balance.

A fiber-rich diet with sufficient roughage, clean drinking water, and regular exercise promote natural intestinal activity. Especially for horses prone to digestive disorders or impaction colic, small supporting measures in daily life can be useful. Herbs such as fennel, anise, and caraway are known to have antispasmodic effects and to gently support the intestine. Mash is also used purposefully by many horse owners, as it can stimulate bowel movement and keep the intestinal contents supple.

Psyllium husks have proven effective, especially for impaction colic, as they swell in the intestine and thus support the movement of intestinal contents. Linseed oil is considered particularly gentle on the stomach and can additionally support the gastrointestinal tract without straining it.

Another important point in colic prevention is avoiding typical risk factors. These include feeding errors, abrupt feed changes, lack of exercise, persistent stress, severe parasite infestation, as well as untreated dental diseases. Poor teeth, in particular, can lead to food not being chewed sufficiently, causing digestive problems in the gastrointestinal tract.

Regular dental checks and a well-coordinated deworming management are therefore essential parts of your horse's health care. They contribute to relieving the intestine and preventing colics before they even arise.

Pay close attention to changes in the behavior of your four-legged friend. Discomfort often shows itself long before there are clear signs of colic. Your intuition as a horse owner is incredibly valuable here – because you know your horse best.