Respiratory diseases in horses are among the most common health problems—especially in sport and stable horses. However, coughing, nasal discharge, or reduced performance are often recognized too late or underestimated.
Respiratory diseases can significantly affect a horse’s quality of life and performance.
In this article, you will learn everything about causes, symptoms, common diseases, and what you can actively do for your horse’s healthy airways.
Why are healthy airways so important for horses?
The horse is an obligate nasal breather, meaning it can only breathe through its nose.
👉 Even small airway restrictions can therefore:
- decrease oxygen intake
- reduce performance
- Cause stress and discomfort
Common respiratory diseases in horses
Equine asthma (formerly COPD / RAO)
One of the most common chronic respiratory diseases.
Causes:
- dust exposure (hay, straw)
- mold spores
- poor stable air quality
Symptoms:
- chronic cough
- difficulty breathing
- “Damp groove” (visible abdominal muscles)
- reduced performance
Acute respiratory infections
Often caused by viruses or bacteria.
Typical symptoms:
- fever
- nasal discharge
- Coughing
- Lethargy
👉 Especially young or immunocompromised horses are affected.
Allergic respiratory diseases
Similar to humans, horses can react to environmental stimuli.
Triggers:
- Pollen
- Dust
- Mold
Symptoms:
- Coughing
- shortness of breath
- nasal discharge
Symptoms: Recognizing breathing problems in horses
Watch for warning signs early:
- coughing (especially when trotting)
- nasal discharge
- increased respiratory rate
- labored breathing
- performance decline
- flared nostrils
- unusual breathing sounds
👉 If detected early, many diseases are treatable.
Causes of respiratory diseases
Housing & stable climate
A crucial factor is the air quality in the stable.
Problematic are:
- dusty hay
- poor ventilation
- ammonia exposure
- dry air
feeding
- dry, dusty hay
- poor feed quality
- mold exposure
👉 Steamed or soaked hay can help.
environmental factors
- pollen exposure
- weather changes
- air pollution
infections
Viruses and bacteria can trigger acute illnesses and promote chronic problems.
Treatment of respiratory diseases
Therapy depends on the cause:
- medications (e.g., bronchodilators, anti-inflammatories)
- inhalation therapy
- optimize housing
- adjust training and workload
👉 Important: Always have a vet check.
What you can do preventively
1. reduce dust
- soak or steam hay
- use low-dust bedding
2. fresh air
- lots of pasture time
- good stable ventilation
3. regular check-ups
- monitor respiratory rate
- respond early to coughing
4. strengthen the immune system
- balanced feeding
- reduce stress
When should you call the vet?
👉 Act immediately if:
- persistent cough
- shortness of breath
- fever
- performance drop
- heavy nasal discharge
Conclusion: Horse respiratory health – detect early, act specifically
Respiratory diseases in horses are common but treatable – if detected early.
The most important factors are:
- good stable hygiene
- low-dust housing
- attentive observation
- early treatment
👉 This is how your horse stays fit, healthy, and vital.
