Summer Pasture-Associated Recurrent Airway Obstruction

(SPA-RAO)

• Airway inflammation and clinical signs similar to stabling-associated COPD/RAO, but occurs in horses kept out at pasture during the summer months.
• Presumed to be similar pathogenesis to stabling-associated COPD/RAO
• Allergens likely to be plant pollens and plant-associated fungal spores
• Horses often have concurrent stabling-associated COPD so management can be very difficult!