Opublikowano: 20-03-2026
A soft cough from the stall, an occasional snort while riding – as horse owners, we know these sounds well. But when is a cough just a harmless clearing of the throat, and when is it an early warning sign of a serious respiratory condition? Since 2016, the umbrella term "Equine Asthma" has been used to group various chronic, non-infectious respiratory diseases in horses. A primary distinction is made between Severe Equine Asthma (formerly RAO – Recurrent Airway Obstruction, also known as heaves or COB) and Mild to Moderate Equine Asthma (formerly IAD – Inflammatory Airway Disease). Don't worry, you don't need to be a veterinarian to stay vigilant. Your daily observations are invaluable! This guide will help you better interpret your horse's subtle signals.
The "Simple" Cough – When should you listen more closely?
Not every cough signals the worst-case scenario. Horses may cough to expel dust or small particles from their airways. The context and frequency are key:
- Occasional and brief: A single cough at the start of exercise or while eating dusty hay is often harmless.
- Dry or productive? Pay attention to whether the cough sounds dry and barking or if mucus is being expelled.
- When does your horse cough? Only in the stable? Only under exertion? While eating? Keep a log of these observations.
Severe Equine Asthma (formerly RAO) – The chronic challenge
Severe asthma is a chronic, allergic inflammation of the lower airways. Triggers are usually allergens such as mold spores and dust in hay or the stable environment. While the risk increases with age (symptoms often appear around age 9 or 10), younger horses can also be affected.
Signs to watch for if you suspect Severe Asthma (RAO):
- Chronic coughing: Often occurring in bouts, especially in dusty environments.
- Increased resting respiratory rate: A healthy horse at rest has a respiratory rate of about 8–16 breaths per minute. Count your horse's breaths when it is relaxed. A permanently elevated rate is a warning sign. Observe the flanks – is the breathing labored?
- Nasal discharge: May be present but is not always a primary feature. It can range from clear and minimal to thick. Yellowish or purulent discharge suggests a secondary bacterial infection and requires urgent veterinary attention.
- Exercise intolerance: The horse gets out of breath more quickly and appears lethargic or unmotivated. However, these symptoms are non-specific (could also indicate pain, laminitis, or heart disease) – a precise veterinary diagnosis is essential.
- "Heave line": In advanced cases, a visible ridge develops along the rib cage due to the excessive use of abdominal muscles during exhalation.
- Flared nostrils: Particularly during acute flare-ups, the nostrils may be flared even at rest.
Mild to Moderate Equine Asthma (formerly IAD) – The "milder" inflammation
This form of asthma affects horses of all ages but is more frequently diagnosed in young performance horses. Symptoms are often milder but can still impair performance. Triggers include dust, noxious gases like ammonia, or previous viral infections.
Signs to watch for if you suspect Mild/Moderate Asthma (IAD):
- Occasional coughing (often only during or after exercise).
- Slight nasal discharge (often clear, sometimes only visible as a moist shimmer on the nostrils).
- Delayed recovery after exertion.
- General condition is usually undisturbed (typically no fever, normal appetite). Note: A healthy horse's body temperature is between 37.5 and 38.2°C.
Special Form: Summer Pasture-Associated Asthma (SP-RAO)
It is also important to know that there is a form of severe asthma that occurs mainly on pasture during the summer months (Summer Pasture-Associated Severe Equine Asthma), triggered by pollen or molds in the grass.
Twój „zestaw narzędzi diagnostycznych” / Your "Diagnostic Toolkit"
- Oddech w spoczynku / Resting breathing: Częstotliwość, głębokość, wysiłek? / Rate, depth, effort?
- Kaszel / Cough: Kiedy, jak często, jaki rodzaj? / When, how often, what type?
- Wypływ z nosa / Nasal discharge: Obecność, kolor, konsystencja? / Presence, color, consistency?
- Chęć do pracy / Performance: Czy nastąpiły zmiany? / Any changes?
Kiedy wezwać lekarza? / When to call the vet? Skontaktuj się z weterynarzem, jeśli kaszel trwa dłużej niż kilka dni, występuje gorączka, ropny wypływ z nosa lub wyraźna duszność. Wczesna diagnoza (endoskopia, cytologia BAL) to klucz do skutecznego leczenia i optymalizacji warunków bytowych Twojego konia.