Heaves is an allergic-based disease that compromises a horse’s ability to breathe, similar to the way asthma affects humans. Horse heaves is chronic and can threaten a horse’s long-term health and performance.
Fall always brings changes to air quality as harvesting adds more dust particles, new hay sources become available, and horses begin spending more time inside. All these contribute to heaves in susceptible horses.
Source: EQUUS, January 8, 2021. Link.
Also see: Search Results for: heaves, Animal Health Digest. Link.