Environmental Management of Equine Asthma.
Authors: Diez de Castro Elisa, Fernandez-Molina Jose Maria
Journal: Animals : an open access journal from MDPI
Summary
# Environmental Management of Equine Asthma: A 2024 Evidence Review Equine asthma remains a significant welfare and performance concern, with airborne dust exposure representing the primary environmental trigger—particularly in severe cases. De Castro and Fernandez-Molina's 2024 review synthesises current evidence on environmental management strategies, examining forage selection, hay processing methods, bedding choices and stable ventilation to determine which interventions most effectively reduce clinical signs. Key findings emphasise that whilst soaking and steaming hay substantially improve hygienic quality by reducing dust and mould contamination, these treatments can diminish nutritional density, necessitating concurrent dietary supplementation to maintain adequate mineral and vitamin intake. Stabling recommendations remain somewhat inconsistent across studies, though avoiding straw bedding and optimising barn air exchange continue as standard guidance when pasture turnout is unavailable. Perhaps most critically, the review identifies owner compliance and understanding as the limiting factor in successful asthma management—suggesting that equine professionals must prioritise educating clients on the measurable benefits of these environmental modifications rather than simply prescribing them, to achieve meaningful, sustained improvements in respiratory health and ridden performance.
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Practical Takeaways
- •Prioritize forage quality and processing methods (soaking/steaming hay) as first-line environmental management, but plan for nutritional supplementation when hygienic treatment reduces nutrient content
- •Implement non-straw bedding and enhance barn ventilation systems as core stable management practices for asthmatic horses
- •Focus client education on demonstrating genuine clinical benefits of environmental modifications—owner buy-in is the limiting factor in achieving control of equine asthma
Key Findings
- •Forage type, production method, and contamination during manufacture/storage are primary environmental factors in equine asthma etiology
- •Hay soaking and steaming reduce airborne dust and improve hygienic quality but decrease nutritional value requiring supplementation
- •Avoiding straw bedding and improving barn ventilation are recommended environmental management strategies when pasture turnout is not feasible
- •Owner compliance and education are the most critical factors determining success of environmental asthma management protocols