Horse Colic Risk Assessment Calculator
Assess your horse's colic risk based on diet, management, season, and health factors.
Get prevention recommendations.
Understanding horse colic:
Colic is the leading cause of premature death in domestic horses, affecting an estimated 4–10% of horses annually. It is not a single disease but a broad term for abdominal pain. The equine digestive tract is 30 meters (100 feet) long, and its anatomy makes horses uniquely vulnerable to gas buildup, impactions, and intestinal twists.
Risk factor scoring system:
This calculator uses a weighted risk model based on published veterinary research, including studies from the University of Nottingham and the American Association of Equine Practitioners.
| Risk Factor | Low Risk (0 pts) | Medium Risk (1 pt) | High Risk (2 pts) |
|---|---|---|---|
| Water access | Free-choice clean | Checked 2×/day | Limited or frozen |
| Hay quality | Consistent, good | Occasional changes | Moldy or sudden change |
| Grain amount | < 2.5 kg/day | 2.5–5 kg/day | > 5 kg/day |
| Turnout | 12+ hrs/day | 4–12 hrs/day | Stall-bound |
| Recent changes | None in 14 days | Minor change | Major diet/routine change |
| Dental care | Within 6 months | 6–12 months ago | > 12 months ago |
| Deworming | Current protocol | Slightly overdue | No protocol |
| Season | Spring/summer | Fall | Winter (frozen water risk) |
Risk score interpretation:
Total risk score = Sum of all factor scores
| Score Range | Risk Level | Action |
|---|---|---|
| 0–3 | Low | Continue good management |
| 4–7 | Moderate | Address identified factors |
| 8–11 | High | Make immediate changes |
| 12–16 | Very High | Consult veterinarian now |
Example assessment:
A horse with:
- Free-choice water (0) + good hay (0) + 4 kg grain/day (1) + 6 hrs turnout (1) + recent feed change (2) + dental care 8 months ago (1) + current deworming (0) + winter (2)
- Total: 7 points = Moderate risk
- Primary concern: recent feed change + winter water risk
Key colic prevention facts:
Horses that have colicked before are 3× more likely to colic again. Horses with less than 2 hours of daily turnout have a 2× higher colic rate. Sudden feed changes account for roughly 20% of all colic episodes. Sand colic is common in horses pastured on sandy soil — psyllium husk supplementation helps prevent sand accumulation.