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Effects of changes to the stable environment on the exhalation of ethane, carbon monoxide and hydrogen peroxide by horses with respiratory inflammation
  1. C. A. Wyse, BA, MSc, PhD1,
  2. K. Skeldon, BSc, PhD2,
  3. J. W. Hotchkiss, BSc, BVSc, CertEM, MRCVS1,
  4. G. Gibson, BSc, MSc, PhD2,
  5. P. S. Yam, BSc, BVM&S, CertSAM, CertSAN, PhD, MRCVS1,
  6. R. M. Christley, BVSc, MVCS, MACVSc, PhD, MRCVS1,
  7. T. Preston, BSc, PhD3,
  8. D. R. S. Cumming, BEng, PhD4,
  9. M. Padgett, BSc, MSc, PhD2,
  10. J. C. Cooper, BSc, MSc, PhD, FRSE4 and
  11. S. Love, BVMS, PhD, MRCVS1
  1. 1Division of Companion Animal Sciences, Institute of Comparative Medicine, University of Glasgow Veterinary School, Bearsden, Glasgow G61 1QH
  2. 2Department of Physics and Astronomy, Kelvin Building, University of Glasgow, Glasgow G12 8QQ
  3. 3Scottish Universities Environmental Research Centre, Scottish Technology Park, East Kilbride, Glasgow G75 0QF
  4. 4Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8LT

Abstract

The aim of this study was to assess the effects of changes to the stable environment on exhaled markers of respiratory inflammation in six horses with clinical histories of recurrent airway obstruction. The horses were maintained for two weeks under conventional stable management (straw bedding and hay) and for two weeks on a reduced-dust regimen (paper bedding and ensiled grass), in a crossover study design. Exhaled ethane and carbon monoxide (CO) and exhaled breath condensate hydrogen peroxide (H2O2) were measured every three days under each regimen. The presence of clinical signs of airway inflammation (nasal discharge and cough) was monitored daily. The reduced-dust regimen was associated with fewer clinical signs of airway inflammation than the conventional regimen. Exhaled ethane and CO were significantly lower on the reduced-dust regimen and these markers were correlated with clinical signs of respiratory inflammation, but exhaled H2O2 was not affected by the management regimen.

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      Footnotes

      • Dr Wyse’s present address is Department of Anatomy, School of Medical and Veterinary Sciences, University of Bristol, Southwell Street, Bristol BS2 8EJ

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