We ask a lot of our horses. We ask them to carry us, to perform, and to trust us. In return, we owe them more than just a full belly—we owe them a management routine that actively protects their health.

Two conditions strike fear into the heart of every horse owner: colic and respiratory disease. Both are common, both can escalate quickly, and both are heavily influenced by how we manage our horses day to day.

The good news? Science has given us a clear playbook for prevention. Here's what the research says about protecting your horse from the inside out.

1. Colic: It's All About the Gut

Colic is a broad term for abdominal pain, and it remains one of the most common equine emergencies. While some cases are unavoidable, the majority are tied to management—specifically, how we feed and care for the horse's delicate hindgut.

The horse's digestive system is designed for continuous grazing on high-fiber forage. When we disrupt that with large, starch-heavy meals or long periods without food, the microbial balance in the gut shifts. Research shows that high-starch or low-fiber diets reduce the production of short-chain fatty acids (SCFAs)—compounds that maintain intestinal barrier integrity and suppress inflammation. Without enough SCFAs, the gut becomes more permeable, setting the stage for colic.

The Prevention Playbook:

• Forage first, always. The foundation of colic prevention is continuous access to high-quality fiber. Aim for a minimum of 1.5% to 2% of body weight in hay per day.

• Avoid abrupt changes. Any dietary transition should happen slowly over 7–10 days to allow the gut microbiome to adapt.

• Water, water, water. Impaction colic is often linked to dehydration. Ensure your horse always has access to clean water, and monitor intake during cold snaps when horses drink less.

• Watch the starch. Avoid large, grain-heavy meals. If your horse needs extra calories, look for fat-based or fiber-based options instead.

The takeaway: Feed the fiber. Keep the water fresh. And treat every feed change like a big deal—because it is.

2. Respiratory Disease: The Silent Threat in the Barn

Equine influenza and strangles are two of the most contagious respiratory diseases in the horse world. Both spread rapidly through groups of horses, and both can put a horse out of work for weeks—or worse.

Equine Influenza is a highly contagious virus that spreads through inhalation of respiratory secretions. Signs develop quickly: high fever (up to 106°F), clear nasal discharge, swollen lymph nodes, and a dry, harsh cough. Most horses recover with rest, but the cough can persist for weeks, and severely affected horses may take months to fully recover.

Strangles is caused by the bacterium Streptococcus equi. It is highly infectious and characterized by fever, thick nasal discharge, and abscesses in the lymph nodes of the head and neck. The abscesses can swell so much that they obstruct the airway. Some horses become "carriers"—silently harboring the bacteria and infecting others.

The Prevention Playbook:

• Vaccinate. For influenza, vaccination is the cornerstone of prevention. Boosters are recommended every 6 months for at-risk horses to maintain immunity. For strangles, vaccines are available and can reduce the severity of the disease.

• Practice biosecurity. Isolate new horses for 2 weeks before introducing them to the herd. Do not share buckets, tack, or grooming equipment between horses. At competitions, avoid communal water sources and limit nose-to-nose contact.

• Monitor temperatures. Taking rectal temperatures daily—especially at shows or after travel—can catch a fever before other signs appear. A temperature over 101.5°F warrants immediate isolation and a call to your vet.

The takeaway: Vaccinate. Isolate. Disinfect. And never ignore a fever.

Final Thought

Prevention is never as dramatic as treatment. There are no emergency vet calls, no sleepless nights, no heartbreaking prognoses.

But it's the most important thing you'll ever do for your horse.

Feed the gut. Protect the airway. And watch your horse thrive.

Because the best cure has always been prevention.