A bitless bridle does not limit or prevent dynamic laryngeal collapse.
bit
bitless bridle
dynamic laryngeal collapse
horse
tracheal pressure measurement
upper respiratory tract
Journal
Equine veterinary journal
ISSN: 2042-3306
Titre abrégé: Equine Vet J
Pays: United States
ID NLM: 0173320
Informations de publication
Date de publication:
Jan 2021
Jan 2021
Historique:
received:
17
12
2019
revised:
17
04
2020
accepted:
09
05
2020
pubmed:
26
5
2020
medline:
23
12
2020
entrez:
26
5
2020
Statut:
ppublish
Résumé
Bits have often been incriminated as a cause of upper respiratory tract obstruction in horses; however, no scientific studies are available to confirm or refute these allegations. Clinical signs of dynamic laryngeal collapse associated with poll flexion (DLC) are induced when susceptible horses are ridden or driven into the bit. To determine whether use of Dr Cook's Intervention study using each horse as its own control in a block randomised order. Nine Norwegian Swedish Coldblooded trotters previously diagnosed with DLC were exercised on two consecutive days using a standardised high-speed treadmill protocol with either a conventional bridle with a snaffle bit, or Dr Cook's Seven horses' data met the inclusion criteria. The change in mean inspiratory tracheal pressure between free and flexion phases in the bitless bridle (-15.2 ± 12.3 cmH Small sample size due to difficulty recruiting suitable clinical cases. This study could not provide any clear evidence that the effect of a snaffle bit in a horse's mouth influences the development or severity of DLC. Instead, head and neck angles induced by rein tension seem to be the key event in provoking DLC in susceptible horses.
Sections du résumé
BACKGROUND
BACKGROUND
Bits have often been incriminated as a cause of upper respiratory tract obstruction in horses; however, no scientific studies are available to confirm or refute these allegations. Clinical signs of dynamic laryngeal collapse associated with poll flexion (DLC) are induced when susceptible horses are ridden or driven into the bit.
OBJECTIVE
OBJECTIVE
To determine whether use of Dr Cook's
STUDY DESIGN
METHODS
Intervention study using each horse as its own control in a block randomised order.
METHODS
METHODS
Nine Norwegian Swedish Coldblooded trotters previously diagnosed with DLC were exercised on two consecutive days using a standardised high-speed treadmill protocol with either a conventional bridle with a snaffle bit, or Dr Cook's
RESULTS
RESULTS
Seven horses' data met the inclusion criteria. The change in mean inspiratory tracheal pressure between free and flexion phases in the bitless bridle (-15.2 ± 12.3 cmH
MAIN LIMITATION
CONCLUSIONS
Small sample size due to difficulty recruiting suitable clinical cases.
CONCLUSIONS
CONCLUSIONS
This study could not provide any clear evidence that the effect of a snaffle bit in a horse's mouth influences the development or severity of DLC. Instead, head and neck angles induced by rein tension seem to be the key event in provoking DLC in susceptible horses.
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
44-50Subventions
Organisme : Faculty of Veterinary Science, Norwegian University of Life Sciences
Informations de copyright
© 2020 The Authors. Equine Veterinary Journal published by John Wiley & Sons Ltd on behalf of EVJ Ltd.
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