Equine Asthma or “heaves” can cause exercise intolerance, difficulty expelling air, inflammation of lung epithelium and narrowing of bronchus, persistent cough, and nasal secretions from mucous production. All of the above can turn a riding horse into a pasture ornament and or in worst case scenarios, bring about important quality of life decisions. Don’t wait for these signs or a tell-tale heave line to appear before taking steps to reduce dust, mould, and particulates in your horse’s environment. Two of the top sources of these are hay and bedding. These management tips will help you minimize dust and provide a healthier environment for horses and people.