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Author |
Mills, D.S. |
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Title |
Personality and individual differences in the horse, their significance, use and measurement |
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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 |
10-13 |
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Keywords |
Animals; *Behavior, Animal; Horses/*psychology; Personality |
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Abstract |
The biological diversity of a species gives rise to individual differences in behavioural tendency. Traditionally, this variation has been considered to be of little scientific importance or value, but the description and quantification of the fundamental basis of this variability is relevant to many aspects of equine science. The reliable identification of these features may allow the development of more accurate diagnostic and prognostic indicators for a range of clinical diseases. Biologically based traits also provide a more rational basis for selective management and breeding programmes in which specific behavioural tendencies are sought. Individual differences in behaviour also reflect the range of subjective feelings experienced by animals and therefore need to be understood by those concerned with animal welfare. Psychometric techniques concerned with the assessment of personality may provide a suitable basis for scientific study in this field. Potentially methodologies include: behavioural tests, objective behaviour measures or the quantification of reports from those familiar with the subjects. The assessment of the validity and reliability of the variables measured in these tests is an integral part of their development. Interobserver correlation in an experiment based on the subjective rating of 20 horses with respect to 14 familiar terms used to describe horse personality was generally low. This suggests that, with the exception of the terms 'flighty' and 'sharp', the empirical terminology commonly used to describe horse personality is unreliable. |
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De Montfort University Lincoln, School of Agriculture and Horticulture, Caythorpe, Lincs, UK |
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PMID:10484996 |
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refbase @ user @ |
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1932 |
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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 |
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Journal Article |
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Year |
1998 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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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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Summerley, H.L.; Thomason, J.J.; Bignell, W.W. |
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Title |
Effect of rider and riding style on deformation of the front hoof wall in warmblood 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 |
26 |
Pages |
81-85 |
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Keywords |
Animals; Female; Gait/*physiology; Hoof and Claw/*physiology; Horses/*physiology; Male; Videotape Recording; Weight-Bearing |
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Abstract |
A rider modifies the weight distribution and dynamic balance of the horse. But what effect does a rider have on the mechanical behaviour of the hoof during each stance phase? Does riding style have any effect on this behaviour? We attempted to answer these questions using strains recorded from 5 rosette strain gauges glued to the surface of the front hooves of 4 Warmblood horses. Comparisons were made between strains with and without a rider, and when the rider was sitting, rising at a trot, or in a forward seated position. The change in strains from trot to lead or nonlead at a canter, and the effect of turning were also studied. Changing lead at a canter had as least as much effect on strain magnitudes as did turning; strains were up to 43% higher for the nonlead foot, but with little redistribution. Perhaps surprisingly, strains were significantly lower on the quarters by up to 30% with a rider than without, with a 10% increase or decrease at the toe, depending on the individual. Riding style changed strain magnitudes by up to 20% and also caused strain redistribution: strains were higher medially for sitting, and laterally for forward seat, with strains for a rising trot being more evenly distributed and intermediate in magnitude. Studying the range of, and causes of variation in hoof wall strain gives baseline data aimed, in the long term, at providing a biomechanical definition of hoof balance. |
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Department of Biomedical Sciences, University of Guelph, Ontario, Canada |
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PMID:9932097 |
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refbase @ user @ |
Serial |
1934 |
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Author |
Luescher, U.A.; McKeown, D.B.; Dean, H. |
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Title |
A cross-sectional study on compulsive behaviour (stable vices) in horses |
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Journal Article |
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Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
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Volume |
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Issue |
27 |
Pages |
14-18 |
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Cited By (since 1996): 22; Export Date: 21 October 2008 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4527 |
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Author |
Doherty, T.J.; Frazier, D.L. |
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Title |
Effect of intravenous lidocaine on halothane minimum alveolar concentration in ponies |
Type |
Journal Article |
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Year |
1998 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
30 |
Issue |
4 |
Pages |
300-303 |
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Keywords |
Anesthetics/administration & dosage/blood/*pharmacology; Anesthetics, Inhalation/administration & dosage/*analysis; Animals; Consciousness/drug effects; Dose-Response Relationship, Drug; Halothane/administration & dosage/*analysis; Horses/*physiology; Infusions, Intravenous/veterinary; Lidocaine/administration & dosage/blood/*pharmacology; Male |
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Abstract |
This study investigated the effect of lidocaine i.v. on halothane minimum alveolar concentration (MAC) in ponies. Six ponies were anaesthetised with thiopentone and succinylcholine, intubated and anaesthesia maintained with halothane. Ventilation was controlled and blood pressure maintained within clinically acceptable limits. Following a 2 h equilibration period, baseline halothane MAC was determined. The ponies were then given a loading dose of lidocaine (2.5 or 5 mg/kg bwt) or saline over 5 min, followed by a constant infusion of lidocaine (50 or 100 microg/kg/min, or saline, respectively). The halothane MAC was redetermined after a 60 min infusion of lidocaine or saline. The baseline halothane MAC for the control group was mean +/- s.d. 0.94 +/- 0.03%, and no significant decrease occurred following saline infusion. Lidocaine decreased halothane MAC in a dose-dependent fashion (r = 0.86; P < 0.0003). The results indicate that i.v. lidocaine may have a role in equine anaesthesia. |
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Department of Large Animal Clinical Sciences, University of Tennessee, College of Veterinary Medicine, Knoxville 37901-1071, USA |
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0425-1644 |
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Notes |
PMID:9705112 |
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no |
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Call Number |
refbase @ user @ |
Serial |
95 |
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Author |
Morales, J.L.; Manchado, M.; Vivo, J.; Galisteo, A.M.; Aguera, E.; Miro, F. |
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Title |
Angular kinematic patterns of limbs in elite and riding horses at trot |
Type |
Journal Article |
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Year |
1998 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
30 |
Issue |
6 |
Pages |
528-533 |
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Keywords |
Animals; Biomechanics; Breeding; Extremities/*physiology; Gait/*physiology; Horses/*physiology; Image Processing, Computer-Assisted; Joints/*physiology; Male; Video Recording |
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Abstract |
Normal speed videography was used to determine the angular parameters of 28 Spanish Thoroughbreds at trot. Horses were divided into 3 groups: Group UT, comprising 9 animals (provided by the VII National Stud, Cordoba, Spain) which had undergone no specific training programme and which were hand led at the trot; Group T, formed by 19 horses considered to be highly bred and trained, and which were also hand led; and Group RT, comprising the same horses as the latter group but this time trotted by a rider. Each animal was filmed 6 times from the right-hand side, using a Hi8 (25 Hz) video camera. Angular parameters for fore- and hindlimb joints were measured in each stride from computer-grabbed frames and entered into a spreadsheet for calculation; parameters included maximum and minimum angles, range of motion, and angles at landing, lift off and maximum hoof height; the times at which maximum angle, minimum angle, lift off and maximum hoof height occurred were calculated as percentages of total stride duration. Stride velocity (mean [s.d.]) was 4.01 (0.62), 3.60 (0.34) and 3.07 (0.36) m/s for Groups UT, T and RT, respectively. Data were then compared between Groups UT-T and Groups T-RT. Compared with Group UT, horses from Group T featured a shorter stance percentage (P<0.001) in both fore- and hindlimbs. The range of motion in forelimbs was smaller (P<0.05), due to lower retraction (P<0.001); moreover, maximum retraction appeared earlier (P<0.05). Greater scapular inclination was in evidence (P<0.05) and the shoulder joint extended further (P<0.05). Fore- and hind fetlock joints revealed a relatively shorter hyperextension period during the stance phase (P<0.01). Compared with Group T, horses from Group RT had a longer stance percentage, with belated maximum retraction of the fore- and hindlimbs. The range of movement in scapular inclination was greater (P<0.05), due to a smaller minimum angle (P<0.01), and the shoulder joint flexed more (P<0.05). The elbow joint extended more and for longer during the stance phase. Initial extension of the hip joint (P<0.05) and tarsus (P<0.001) lasted longer. The carpal and fore and hind fetlock joints recorded relatively longer hyperextension times, in addition to greater hyperextension during the stance phase. The results from the present study suggest that rider-effect must be taken in consideration when well gaited horses are selected for dressage purposes. |
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Department of Compared Anatomy and Pathology, University of Cordoba, Veterinary Faculty, Spain |
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0425-1644 |
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PMID:9844972 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
3734 |
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Author |
Birch, H.L.; Bailey, A.J.; Goodship, A.E. |
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Title |
Macroscopic 'degeneration' of equine superficial digital flexor tendon is accompanied by a change in extracellular matrix composition |
Type |
Journal Article |
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Year |
1998 |
Publication |
Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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Volume |
30 |
Issue |
6 |
Pages |
534-539 |
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Keywords |
Animals; Collagen/analysis; DNA/analysis; Extracellular Matrix/*chemistry; Glycosaminoglycans/analysis; Horses/injuries/*physiology; Immunohistochemistry; Rupture/veterinary; Tendon Injuries/metabolism/pathology/veterinary; Tendons/chemistry/*pathology; Water/analysis |
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Injuries to the superficial digital flexor tendon are common in horses required to gallop and jump at speed. Partial rupture of this tendon usually occurs in the central core of the midmetacarpal region and may be preceded by localised degenerative changes. Post mortem examination of apparently normal equine flexor tendons has revealed an abnormal macroscopic appearance in the central core, characterised by a reddish discolouration. We have previously shown that there is also physical damage to the collagen fibres. In the present study we tested the hypothesis that the abnormal appearance is accompanied by changes in the composition of the extracellular matrix of the tendon. Biochemical analysis of the extracellular matrix demonstrated an increase in total sulphated glycosaminoglycan content, increase in the proportion of type III collagen and decrease in collagen linked fluorescence in the central core of 'degenerated' tendons relative to tissue from the peripheral region of the same tendon. Dry matter content and total collagen content were not significantly different between tendon zones or normal and 'degenerated' tendons. These changes suggest a change in cell metabolism and matrix turnover in the central core of the tendon and are likely to contribute to a decrease in mechanical properties in this part of the tendon, predisposing to the characteristic partial rupture of the tendon. |
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Veterinary Basic Sciences, Royal Veterinary College, North Mymms, Hatfield, UK |
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0425-1644 |
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PMID:9844973 |
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Equine Behaviour @ team @ |
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3794 |
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Author |
Hopkins, W.D.; Parr, L.A. |
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Title |
Lateralized behavior and lymphocyte counts in chimpanzees (pan troglodytes): A cross-sectional and longitudinal assessment |
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Journal Article |
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Year |
1998 |
Publication |
Developmental Neuropsychology |
Abbreviated Journal |
Developmental Neuropsychology |
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14 |
Issue |
4 |
Pages |
519-533 |
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Cross?sectional and longitudinal assessment of lymphocyte count and behavioral laterality was examined in a sample of captive chimpanzees (Pan troglodytes) to assess the validity of the Geschwind?Behan?Galaburda (GBG) theory of cerebral lateralization. For the cross?sectional analysis, chimpanzees classified as right?handed for feeding exhibited lower lymphocyte counts than chimpanzees classified as either ambiguously handed or left?handed. Longitudinal analysis indicated that some measures of laterality within the first 3 months of life predicted (a) direction of hand preference at 2 to 5 years of age and (b) lymphocyte counts for the first 3 years of life. The association between lymphocyte count and behavioral laterality was more evident in males than females. Taken together, the results support some aspects of the GBG theory. |
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Routledge |
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8756-5641 |
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doi: 10.1080/87565649809540726 |
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Equine Behaviour @ team @ |
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5780 |
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Author |
Heitkamp, H.C.; Horstmann, T.; Hillgeris, D. |
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[Riding injuries and injuries due to handling horses in experienced riders] |
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Journal Article |
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Year |
1998 |
Publication |
Der Unfallchirurg |
Abbreviated Journal |
Unfallchirurg |
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101 |
Issue |
2 |
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122-128 |
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Adult; Animals; Athletic Injuries/*epidemiology/etiology/surgery; Cross-Sectional Studies; Female; Fractures, Bone/epidemiology/etiology/surgery; Germany/epidemiology; *Horses; Humans; Incidence; Male; Multiple Trauma/epidemiology/etiology/surgery; Risk Factors |
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A group of experienced riders who qualified for the German riding badge 9.5 years ago answered a questionnaire pertaining to injuries during jumping, dressage and cross-country riding, as well as handling the horse. During riding 69% of the persons had had 187 injuries and while handling the horse 52% had had 124 injuries. Fractures and contusions were the most-frequent injuries; most riding injuries were located in the upper extremities and shoulder while handling mainly in the hands and feet. The number of injuries was comparable in jumping, dressage or cross-country riding. The time engaged in jumping was about one-third of the other types of riding, but the injuries were more severe. While handling the horse the number of injuries relative to the time spent during the activity were higher but less complicated. No change in safety precautions had been implemented by 67% of the persons injured. The injury rate for equestrians is relatively low both in handling the horse and during riding. The frequent fractures and contusions may be reduced by following the required safety regulations. |
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Abteilung Sportmedizin, Universitat Tubingen |
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German |
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Reitverletzungen und Verletzungen beim Umgang mit Pferden bei erfahrenen Reitern |
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0177-5537 |
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PMID:9553480 |
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Equine Behaviour @ team @ |
Serial |
3735 |
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Author |
Kesel, L.; Neil, D.H. |
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Title |
Restraint and handling of animals |
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Journal Article |
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Year |
1998 |
Publication |
Clinical Textbook for Veterinary Technicians. 4th ed. |
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1-26 |
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Cited By (since 1996): 1; Export Date: 21 October 2008 |
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Equine Behaviour @ team @ |
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4523 |
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