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Fluoroscopic study of oral behaviours in response to the presence of a bit and the effects of rein tension

In: Comparative Exercise Physiology
Authors:
Jane M. Manfredi Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Mary Anne McPhail Equine Performance Center, Michigan State University, East Lansing, MI 48824-1314, USA

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Diana Rosenstein Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Mary Anne McPhail Equine Performance Center, Michigan State University, East Lansing, MI 48824-1314, USA

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Joel L. Lanovaz Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Mary Anne McPhail Equine Performance Center, Michigan State University, East Lansing, MI 48824-1314, USA

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Sandra Nauwelaerts Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Mary Anne McPhail Equine Performance Center, Michigan State University, East Lansing, MI 48824-1314, USA

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Hilary M Clayton Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Mary Anne McPhail Equine Performance Center, Michigan State University, East Lansing, MI 48824-1314, USA

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Online Publication Date:
01 Nov 2009
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Abstract

Abstract This study investigated intra-oral behaviours in horses wearing different bits with and without rein tension. Six riding horses wore a bridle and three bits: jointed snaffle, KK Ultra and Myler comfort snaffle. Lateral fluoroscopic images (30 Hz) were recorded for 20 s for each bit with loose reins and with 25 ± 5 N bilateral rein tension. The videos were analysed to determine time spent in the following behaviours: mouth quiet, gently mouthing the bit, retracting the tongue, bulging the dorsum of the tongue over the bit, lifting the bit and other behaviours that were performed infrequently. Repeated-measures ANOVA indicated that behaviours did not differ between bits, so bit type was not predictive of behaviour, but there were significant effects of horse and rein tension. Horses spent less time quiet and more time mouthing the bit, retracting the tongue and bulging the tongue over the bit when tension was applied.

Title:
Fluoroscopic study of oral behaviours in response to the presence of a bit and the effects of rein tension
Article Type:
Research Article
DOI:
https://doi.org/10.1017/S1755254010000036
Language:
English
Pages:
143–148
Keywords:
horse; bit; oral cavity; fluoroscopy; rider; communication
In:
Comparative Exercise Physiology
In:
Volume 6: Issue 4
Received:
20 Jan 2010
Accepted:
21 Jan 2010
Publisher:
Wageningen Academic
E-ISSN:
1755-2559
Print ISSN:
1755-2540
Subjects:
General, Life Sciences, Food & Health, Animal & Veterinary

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