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Author |
McGreevy, P.D.; Richardson, J.D.; Nicol, C.J.; Lane, J.G. |
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Title |
Radiographic and endoscopic study of horses performing an oral based stereotypy |
Type |
Journal Article |
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Year |
1995 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
27 |
Issue |
2 |
Pages  |
92-95 |
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Keywords |
Animals; Endoscopy/*veterinary; Esophagus/physiopathology/radiography; Female; Fluoroscopy/veterinary; Horse Diseases/physiopathology/*psychology/radiography; Horses; Male; Pharynx/physiopathology/radiography; *Stereotyped Behavior; Video Recording |
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Abstract |
There is confusion in the veterinary literature concerning the definition of oral based stereotypies in the horse. This study reports the use of fluoroscopy and endoscopy during cribbiting/wind-sucking in afflicted horses. This permitted observations of movements of the pharyngeal and oesophageal tissues and of the air column within during the stereotypic behaviour. The findings reported show that the sequence of events during crib-biting/wind-sucking is not related to deglutition and that air is not swallowed to the stomach. Transient dilation of the upper oesophagus was recorded and the characteristic noise of wind-sucking coincided with the in-rush of air through the cricopharynx. The oesophageal distension was relieved when the air returned to the pharynx although small quantities passed caudally. It is proposed that the role of contraction of the strap muscles of the neck is to create a pressure gradient in the soft tissues surrounding the oesophagus which provokes movement of air from the pharynx into the oesophagus. The findings suggest that the definitions currently used in the sale of horses are in need of revision. |
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Department of Clinical Veterinary Science, University of Bristol, Langford, UK |
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0425-1644 |
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Notes |
PMID:7607156 |
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no |
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Call Number |
refbase @ user @ |
Serial |
90 |
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Author |
McGreevy, P.D.; Cripps, P.J.; French, N.P.; Green, L.E.; Nicol, C.J. |
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Title |
Management factors associated with stereotypic and redirected behaviour in the thoroughbred horse |
Type |
Journal Article |
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Year |
1995 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
27 |
Issue |
2 |
Pages |
86-91 |
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Keywords |
Animal Husbandry/*methods; Animals; Horse Diseases/psychology/*therapy; Horses; Risk Factors; *Stereotyped Behavior; Time Factors |
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Abstract |
A greater knowledge of the effect of management factors is required to investigate the ontogeny of abnormal behaviour in the stabled horse. A postal survey of racehorse (flat) trainers yielded information about 22 yard and management factors. The relationship of the factors to the prevalence of abnormal behaviour was analysed by logistic regression. Management factors related to the time spent in the stable showed the strongest associations with stereotypic behaviour. The risk of horses performing abnormal behaviour increased: 1) as the amount of forage fell below 6.8 kg/day, 2) when bedding types other than straw were used, 3) when the total number of horses on the yard was fewer than 75, 4) in association with box designs that minimised contact between neighbouring horses, 5) when hay, rather than other types of forage, was used. |
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Department of Animal Health and Husbandry, School of Veterinary Science, University of Bristol, Langford, UK |
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0425-1644 |
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PMID:7607155 |
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Call Number |
refbase @ user @ |
Serial |
91 |
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Author |
Houpt, K.A. |
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Title |
New perspectives on equine stereotypic behaviour |
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Year |
1995 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
27 |
Issue |
2 |
Pages |
82-83 |
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Keywords |
Animals; Horses/*psychology; Stereotyped Behavior/*physiology |
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0425-1644 |
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PMID:7607153 |
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no |
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refbase @ user @ |
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34 |
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Author |
McGreevy, P.D.; French, N.P.; Nicol, C.J. |
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Title |
The prevalence of abnormal behaviours in dressage, eventing and endurance horses in relation to stabling |
Type |
Journal Article |
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Year |
1995 |
Publication |
The Veterinary record |
Abbreviated Journal |
Vet. Rec. |
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Volume |
137 |
Issue |
2 |
Pages |
36-37 |
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Keywords |
Animal Husbandry/*methods; Animals; *Behavior, Animal; Horse Diseases/*psychology; Horses; *Physical Conditioning, Animal; Prevalence; Questionnaires; *Stereotyped Behavior |
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Abstract |
The behaviour of horses competing in different disciplines was studied and the relationship between the time they spent out of the stable and the prevalence of abnormal behaviour was examined. The owners of dressage, eventing and endurance horses were sent a questionnaire and a total of 1101 responses were received, giving data on 1750 horses. The behaviours studied were wood-chewing, weaving, crib-biting/wind-sucking and box-walking. The reported percentage prevalences of abnormal behaviour for the dressage, eventing and endurance horses were 32.5, 30.8 and 19.5, respectively. The relationship between the time spent in the stable and the prevalence of abnormal behaviour was examined by chi 2 tests which showed that there were significant linear trends for the eventing group (P < 0.001) and the dressage group (P < 0.05). It is concluded that the time a horse spends out of the stable is related to the discipline for which it is being trained and in dressage and eventing horses the time spent in a stable is correlated with an increased risk of abnormal behaviour. |
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University of Bristol, Department of Clinical Veterinary Science, Langford |
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0042-4900 |
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Notes |
PMID:8525580 |
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no |
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Call Number |
refbase @ user @ |
Serial |
89 |
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Author |
McGreevy, P.D.; Nicol, C.J. |
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Title |
Prevention of crib-biting: a review |
Type |
Journal Article |
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Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Volume |
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Issue |
27 |
Pages |
35-38 |
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Keywords |
Animals; *Behavior, Animal; Horse Diseases/*prevention & control/psychology; Horses; *Stereotyped Behavior |
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Abstract |
Crib-biting is a common oral stereotype. Because of perceived deleterious effects on the health and appearance of subjects the prevention of crib-biting is regularly attempted. The resourcefulness of horses in satisfying their motivation to perform this behaviour often frustrates owners' efforts at prevention. This paper reviews the efficacy and observable consequences of attempting to prevent crib-biting by a variety of methods. These include attempts to prevent the grasping of objects, to interfere with air-engulfing and to introduce punishment for grasping and neck-flexion. Other approaches include the use of surgery, acupuncture, pharmaceuticals, operant feeding and environmental enrichment. A remedy that is effective for every crib-biter remains elusive. We conclude that, rather than concentrating on remedial prevention, further research should be directed at establishing why horses crib-bite and how the emergence of crib-biting can be avoided. |
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Department of Clinical Veterinary Science, University of Bristol, UK |
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Notes |
PMID:10485002 |
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Call Number |
refbase @ user @ |
Serial |
87 |
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Author |
McGreevy, P.D.; Nicol, C.J. |
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Title |
The effect of short-term prevention on the subsequent rate of crib-biting in thoroughbred horses |
Type |
Journal Article |
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Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Volume |
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Issue |
27 |
Pages |
30-34 |
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Keywords |
Analysis of Variance; Animals; *Behavior, Animal; Horse Diseases/*prevention & control/psychology; Horses; Male; Recurrence; *Stereotyped Behavior; Videotape Recording |
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Abstract |
The results of an experimental study of the motivational consequences of short-term prevention of crib-biting are reported here. Eight test horses wore a cribbing collar for 24 h. This was effective in preventing crib-biting in 6 subjects. Using analysis of co-variance that accounted for baseline differences in crib-biting rate, test horses showed significantly more crib-biting than control horses on the first day after prevention (P < 0.05). There was also a highly significant increase in the crib-biting rate of test horses on the first day after prevention in comparison with their baseline rate (P < 0.01). This defines the increase as a post inhibitory rebound. An increase in the novelty of the cribbing bar and an increase in feeding motivation during the period of prevention are rejected as explanations of the rebound in this study. Instead, it is suggested that the rebound reflected a rise in internal motivation to crib-bite during the period of prevention. Behaviours that exhibit this pattern of motivation are generally considered functional; and it has been argued that their prevention may compromise welfare. |
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Department of Clinical Veterinary Science, University of Bristol, UK |
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PMID:10485001 |
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Call Number |
refbase @ user @ |
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88 |
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Author |
Cooper, J.J.; Mason, G.J. |
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Title |
The identification of abnormal behaviour and behavioural problems in stabled horses and their relationship to horse welfare: a comparative review |
Type |
Journal Article |
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Year |
1998 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Volume |
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27 |
Pages |
5-9 |
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Keywords |
*Animal Welfare; Animals; *Behavior, Animal; Horses/*psychology; *Housing, Animal/standards; *Stereotyped Behavior |
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Abstract |
Many behaviours in domestic animals, such as the 'stable vices' of horses, are treated because they are considered undesirable for economic or cultural reasons, and not because the activity affects the horse's quality of life. The impact of a behaviour on the human reporter is not a function of its impact on the animal performer, and an understanding of the causes and effects of the particular activity is necessary to assess the costs and benefits of treatment. Where the behaviour is a sign of poor welfare, such as an inadequate environment, treatment can best be achieved by removing these underlying causal factors. Pharmacological or physical prevention of a behaviour can be justified only if the behaviour causes harm to the performer or to others. In these cases, prevention of the behaviour without addressing its causes is no cure and may result in its perseverance in a modified form or the disruption of the animal's ability to adapt to its environment. Where the behavioural 'problem' causes no harm and is not related to poor housing, then the education of the reporter, rather than treatment of the performer, may be the best solution. |
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Department of Zoology, University of Oxford, UK |
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PMID:10484995 |
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refbase @ user @ |
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1933 |
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