Horse Respiratory Disease: Prevention and Early Detection in Stabled Horses

Inflammatory airway disease and severe equine asthma are major welfare concerns for stabled horses, with management changes being the most effective prevention.

Key Facts

Up to 80% of stabled horses have some degree of airway inflammation
Equine asthma spectrum ranges from mild inflammatory airway disease to severe recurrent airway obstruction
Dust and mold spores in hay and bedding are primary triggers for equine respiratory disease
Soaking or steaming hay reduces respirable dust particles by up to 98%
Outdoor living reduces equine respiratory disease incidence dramatically
Heaves (severe asthma) can be managed but not cured without reducing dust exposure

Welfare Considerations

Respiratory disease in horses represents chronic welfare compromise that is often under-recognized because horses cannot express the distress from breathing difficulty as readily as from pain. Horses with inflammatory airway disease may show subtle signs - occasional cough, reduced performance, increased respiratory rate - that are dismissed as normal or attributed to fitness. Yet chronic airway inflammation is uncomfortable and limits the horse's ability to exercise without distress. The strong link to management factors makes this a largely preventable welfare problem.

What You Can Do

Maximize turnout time to reduce exposure to stable dust and mold spores
Soak or steam hay to reduce dust content before feeding
Use dust-free bedding alternatives like paper, rubber matting, or hemp
Ensure stables have excellent ventilation - fresh air is the primary prevention
Monitor horses for respiratory signs: cough, nasal discharge, increased effort at exercise
Work with an equine vet to endoscope horses with suspected airway disease for accurate diagnosis