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Colic

What It Is, Why It Happens,

and Why Most Cases Are Predictable

 

Colic is not a disease.

It is a symptom.

 

Colic simply means abdominal pain.

 

That pain can originate from gas distension, spasms, impaction, displacement, strangulation, inflammation, or vascular compromise. The cause matters. The mechanism matters even more.

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1. The Horse is a Fermentation Engine.

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​They evolved as continuous grazers.

 

Key realities:

 

  • Small stomach, 8 to 15 liters

  • Massive cecum, primary fermentation chamber

  • Large colon, complex and mobile

  • No ability to vomit

  • Narrow flexures are prone to blockage

 

The cecum and colon are microbial reactors. They rely on:

 

  • Constant fiber flow

  • Stable hydration

  • Stable microbial populations

  • Consistent intake patterns

 

Interrupt that system, and pressure begins to build.

 

 

2. The Most Common Types of Colic

 

 

Gas Colic

 

Usually microbial imbalance. Rapid fermentation of starch or sugars creates excess gas. Pressure increases, pain follows.

 

 

Spasmodic Colic

 

Disordered gut motility. Often stress-related, or secondary to dietary change.

 

 

Impaction Colic

 

Dry ingesta accumulates, typically at the pelvic flexure.

Common causes:

 

  • Dehydration

  • Poor fiber quality

  • Coarse, indigestible feed

  • Inadequate movement

 

 

Displacement or Torsion Colic

 

Gas distension can cause sections of bowel to move or twist. These become surgical emergencies.

 

 

3. Feeding Errors That Drive Colic Risk

 

You know this well, and it is where powerful education begins.

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Feeding from buckets on fences alters:

 

  • Saliva production

  • Natural head and neck posture

  • Airway drainage

  • Chewing mechanics

 

Ground level feeding:

 

  • Encourages natural chewing rhythm

  • Improves saliva buffering

  • Reduces choke risk

  • Supports proper flow of ingesta

 

Horses were not designed to eat at chest height.

 

 

Hard Pellets and Dense Concentrates

 

Highly compacted feeds:

 

  • Reduce chewing time

  • Reduce saliva production

  • Increase choke risk

  • Deliver rapid starch loads

 

Rapid starch reaching the hindgut destabilizes the microbiome. That is where gas colic begins.

 

 

Abrupt Feed Changes

 

The hindgut microbiota require adaptation time. A sudden feed switch can disrupt microbial balance within 24 hours. That instability can trigger gas accumulation, altered motility, and inflammation.

 

Consistency is not a convenience. It is physiology.

 

 

4. Water, Temperature, and Movement

 

Colic risk rises when:

 

  • Water intake drops

  • Horses are confined

  • Weather turns cold

  • Exercise decreases

 

Cold weather reduces thirst response. Reduced water intake increases risk of impaction. Large cold-adapted breeds with massive hindguts are particularly dependent on high fiber hydration.

 

Movement stimulates gut motility. Confinement slows it.

 

A stalled horse on dry feed with marginal water intake is a predictable impaction candidate.

 

 

5. Early Warning Signs

 

  • Reduced manure output

  • Dullness

  • Repeated stretching

  • Pawing

  • Looking at flank

  • Lying down and getting up repeatedly

  • Rolling

 

The earlier intervention begins, the better the outcome.

 

 

6. Prevention Is Not Complicated

 

True prevention is management discipline:

 

  • Feed primarily forage

  • Avoid heavy starch meals

  • Introduce changes gradually

  • Feed at ground level in a wide, flat tub

  • Ensure constant access to clean water

  • Encourage movement

  • Avoid long fasting periods

 

Colic is rarely random. It is often a consequence of management decisions stacking up.

 

 

7. The Hard Truth

 

Most impactions are preventable.

Most gas colics are predictable.

Many emergency surgeries originate from small daily compromises.

 

The horse’s gut has not changed in 50 million years.

Modern feeding practices have changed dramatically in 50.

 

That mismatch is where colic lives.

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The Thrive Feed Connection: Supporting the Engine

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Understanding the biological mismatch is the first step toward a safer management strategy. I developed the Thrive Feed System specifically to respect the 50-million-year-old design of the equine hindgut.

Unlike dense, highly processed rations that can overwhelm the small intestine, our formulations focus on:

  • Microbial Stability: Ingredients selected to support a consistent, healthy population of fiber-digesting bacteria.

  • Digestive Efficiency: Enhancing the horse's natural ability to extract nutrition from forage, reducing the reliance on massive concentrate loads.

  • Bio-Appropriate Formats: Designed to be fed at ground level to support natural posture, chewing rhythm, and saliva production.

By aligning your feeding routine with your horse’s biology, you aren't just providing a meal—you are building digestive resilience.

Explore our [Thrive Feed Classic] or [IR Rescue] to see how we put these biological principles into every bag.

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