Colic
Disease Overview
Although the vast majority of colic cases are mild, colic is the number one killer of horses. There are a number of causes of colic, which simply refers to abdominal pain in horses. While colic can range in severity from mild to life-threatening, pain relief is almost always necessary. In mild cases, which are often presumed to be the result of an intestinal spasm or excessive gas in the gastrointestinal tract, analgesia is often the only treatment needed. In cases involving an intestinal twist or displacement, surgery is likely necessary. Veterinarians and horse owners must take all cases of colic or suspected colic seriously, because it can be difficult to tell mild cases from those requiring serious intervention such as surgery in early stages.
Merck Animal Health Solutions
Clinical Signs
Infection affects the central nervous system.
- Pawing repeatedly
- Looking back at the flank region
- Curling the upper lip and arching the neck
- Repeatedly raising a rear leg
- Kicking or biting at the abdomen
- Repeated rolling from side to side, often with grunting sounds
- Unexpected sweating
- Stretching out as if to urinate
- Straining to defecate
- Distention of the abdomen
- Reduced or absent digestive sounds
- Loss of appetite
- Depression
- Decreased number of bowel movements
- Elevated heart rate
- Elevated respiratory rate
- Dilated pupils
Risk Factors
- Parasitism
- Dehydration
- Poor-quality diet
- Feeding grain as more than 50% of the diet
- Excessive intake of rich forage
- Cold weather
- Lack of exercise
- Obesity
- Stress
References
“Colic: Minimizing its Incidence and Impact in your Horse,” American Association of Equine Practitioners, copyright 2021, aaep.org/horsehealth/colic-minimizing-its-incidence-and-impact-your-horse.
Earl Gaughan, “Pain Recognition and Management in Horses,” Merck Animal Health, copyright 2018, www.merck-animal-health-equine.com/news/article/34.
Scott Leibsle, “Cold Weather Colic,” American Association of Equine Practitioners, 2016, aaep.org/horsehealth/cold-weather-colic.
Nancy Loving, “Colic: Updates and Prevention,” American Association of Equine Practitioners, 2016, aaep.org/horsehealth/colic-updates-and-prevention.
Important Safety Information
Dolorex: For use in horses only. Not for use in horses intended for food. DOLOREX, a potent analgesic, should be used with caution with other sedative or analgesic drugs as these are likely to produce additive effects. There are no well controlled studies using butorphanol in breeding horses, weanlings and foals. Therefore the drug should not be used in these groups.