Horse Respiratory Disease Welfare

Equine asthma (formerly heaves) and other respiratory conditions cause chronic welfare problems for affected horses. Environmental management and medical treatment together improve quality of life for respiratory horses.

Key Facts

Equine asthma affects an estimated 14% of horses and is the second most common performance-limiting condition
The condition involves airway inflammation triggered by dust, mold, and endotoxins primarily from hay and bedding
Clinical signs include cough, nasal discharge, reduced exercise tolerance, and in severe cases labored breathing at rest
Severe equine asthma causes visible abdominal effort during breathing and a characteristic 'heave line' of hypertrophied abdominal muscles
Environmental management is primary treatment - reducing dust exposure through soaked or steamed hay and dust-free bedding
Bronchodilators and corticosteroids provide medical management but don't address underlying environmental causes
Horses with respiratory disease have reduced exercise capacity and show signs of distress during work
Turnout at pasture dramatically reduces dust exposure and improves respiratory health in most affected horses

Welfare Considerations

Equine asthma causes chronic suffering that is often normalized as a management challenge rather than recognized as a welfare problem. A horse coughing repeatedly during work, showing reduced exercise tolerance, and having to breathe with obvious effort is experiencing significant respiratory distress. Environmental management - reducing dust exposure through soaked hay, dust-free bedding, and increased turnout - is both effective and welfare-positive, addressing the root cause rather than just managing symptoms. Horses with respiratory disease benefit dramatically from management changes that reduce airway inflammation, often showing improved demeanor and exercise capacity within days of dust reduction. The welfare case for proactive respiratory disease management is therefore both medically and ethically compelling.

What You Can Do

Soak or steam hay for horses with respiratory disease to reduce dust and mold spore exposure
Choose dust-free bedding options including rubber matting, paper, or high-quality shavings
Maximize turnout for horses with respiratory disease as pasture dramatically reduces exposure to stable dust
Work with a veterinarian to develop a combined environmental and medical management plan for respiratory horses
Monitor respiratory horses carefully during work for signs of distress indicating inadequate disease control