Effect of ionization, bedding, and feeding on air quality in a horse stable

Journal of Veterinary Internal Medicine
Esther Willemijn SiegersCornélie Martine Westermann

Abstract

Organic dust is associated with Equine asthma. Ionization should reduce airborne dust levels. To determine the effect of ionization of air, type of bedding, and feed on the levels of airborne dust, endotoxin, and fungal colonies in horse stables. 24 healthy University-owned horses occupied the stables. A randomized controlled cross-over study. Four units with 6 stables were equipped with an ionization installation (25 VA, 5000 Volt Direct Current). Horses were kept either on wood shavings and fed haylage (2 units), or on straw and fed dry hay (2 units). Measurements were performed with and without activated ionization, during daytime and nighttime, repeatedly over the course of a week and repeatedly during 4-6 weeks. Statistical analysis was performed using a mixed effect model with Akaike's Information Criterion for model reduction and 95% profile (log) likelihood confidence intervals (CI). Ionization did not alter concentrations of dust, endotoxin, or fungi, fewer. In the units with straw and hay, the concentration of dust, endotoxin, and fungi (difference in logarithmic mean 1.92 (95%CI 1.71-2.12); 2.86 (95%CI 2.59-3.14); 1.75 (95%CI 1.13-2.36)) were significantly higher compared to wood shavings and haylage. The installatio...Continue Reading

References

Apr 19, 2007·BMC Microbiology·Louise A FletcherKevin G Kerr
May 27, 2009·Journal of Occupational Medicine and Toxicology·Lena ElfmanRobert Wålinder
Mar 2, 2013·Equine Veterinary Journal. Supplement·K M IvesterL L Couëtilt
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Jun 14, 2016·Equine Veterinary Journal·R S PirieJ-P Lavoie

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Citations

Oct 11, 2019·Current Allergy and Asthma Reports·M Katie SheatsJill A Poole
Nov 6, 2021·Tropical Animal Health and Production·Laura MenchettiBarbara Padalino
Dec 19, 2021·Environmental Science and Pollution Research International·Jacek GrzybKarol Bulski

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