Heaves, also known as recurrent airway obstruction (RAO), is a respiratory disease that can affect horses. It is a chronic condition characterized by inflammation and narrowing of the airways, making it difficult for the horse to breathe properly. This condition is similar to asthma in humans.

Horses that are primarily affected by heaves are usually older, typically over the age of 7. However, it can also occur in younger horses due to environmental factors such as poor air quality and exposure to allergens like dust, mold, and pollen. Horses kept in stables with inadequate ventilation are at a higher risk of developing heaves.

Common symptoms of heaves in horses include coughing, increased respiratory effort, wheezing, nasal discharge, and difficulty exercising. These signs may worsen when the horse is exposed to dusty or moldy environments. If left untreated, heaves can progress and severely impact the horse's quality of life.

Diagnosing heaves usually involves a thorough veterinary examination, including a physical evaluation, lung function tests, and possibly a bronchoscopy to assess the airways. Treatment options for heaves aim to manage the symptoms and reduce inflammation. This may include environmental management, such as improving ventilation and reducing exposure to allergens, as well as medication to alleviate inflammation and open the airways.

Prevention of heaves is crucial, especially for horses that are predisposed to the condition. Proper stable management, including regular cleaning, dust control, and good ventilation, can significantly reduce the risk of heaves. Additionally, avoiding dusty hay and providing hay alternatives, such as soaked hay or haylage, can also help prevent the development or worsening of heaves.

In conclusion, heaves is a respiratory disease that primarily affects horses. It is a chronic condition characterized by inflammation and narrowing of the airways, making breathing difficult for affected horses. Environmental factors, such as poor air quality and exposure to allergens, play a significant role in the development of heaves. Early diagnosis, proper management, and environmental modifications are essential in treating and preventing this disease.

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