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Author Sigurjónsdóttir , H.; Gunnarsson, V. url  openurl
  Title Controlled Study of Early Handling and Training of Icelandic Foals Type Journal Article
  Year Publication Abbreviated Journal  
  Volume (up) Issue Pages  
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  Abstract Introduction

Many scientists agree that information on the learning abilities of horses should be used in developing training methods (Fiske and Potter, 1979; Mader and Price, 1980; McCall, 1990) but nevertheless research where such knowledge is put to the test is limited (Flannery, 1997). Foals that are handled continuously between 4 and 22 months of age were quicker learners and were easier to train than those that got less handling (Fiske and Potter, 1979). The handling involved being lead, brushed, and acclimated to restraint. In some studies more relaxed foals learned more and were easier to train later on than stressed foals (Fiske and Potter, 1979; Heird et al, 1986) while no such correlation was found in another study (Mader and Price 1980). It is commonly believed, and has been established with tests, that younger horses are quicker-learners than mature (Mader and Price, 1980; Houpt, 1982), but the question remains to be answered if a certain age is better than another and if so, if the optimum time differs between breeds.

The idea of imprint training (Miller, 2000) is controversial but seems to be popular in the USA. Miller found that foals that had been treated by veterinarians at birth were easier to handle later on. He associated this with what Konrad Lorenz called imprint learning (1937), which involved irreversible learning taking place during a sensitive period early in life. Miller claims that the idea has been tested scientifically but no such papers are covered by Wed of Science. To our knowledge one systematic research has been carried out whose results will be published this year (Jennifer Williams, personal communication). Miller (2000) claims that it is very important to stroke and handle the foals quickly after birth (hence the reference to the imprinting concept) and desensitize them to touch and other interventions. A study by Mal et al (1994) did not support the claim that very young foals are more sensitive to treatment than older foals. It is possible that what we are witnessing when the foals seem relaxed after stroking is not “imprinting” but “learned helplessness”.

In Iceland where mares give birth out in the field within the herd (usually herds of mares, sub-adults and sometimes geldings) it is customary not to disturb the mare and foal for the first hours of the foal's life. That fact and the custom in many places to let the foals stay with their dams within large groups in the wilderness from 1-2 months of age till autumn, would mean that continuous handling would not have a practical value for most Icelandic horse owners. We wanted to test the idea that early handling and training of foals should calm the foals considerably and teach them valuable lessons, which would make training later on easier.
 
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  Publisher Iceland University of Education Place of Publication Editor  
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  Notes 2 papers – scroll down Approved no  
  Call Number Equine Behaviour @ team @ Serial 3619  
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Author DUNN, L.J. url  openurl
  Title PRELIMINARY INVESTIGATION OF EQUINE LEARNING AND MEMORY Type Journal Article
  Year 1999 Publication Abbreviated Journal  
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  Abstract ABSTRACT

Six horses demonstrated observation and discrimination learning and memory ability. The purpose of this study was to gain further knowledge in the area of equine learning. Performance on each task was compared in a single subject design. Subjects learned to discriminate between a black and a white bucket. The criterion for learning was set at 80% correct black bucket choice. All subjects successfully performed the discrimination task by the eighth session. Observation learning was unsuccessful; no subject reached the 80% correct criterion. Five horses were tested for memory retention of the discrimination task three weeks after the initial learning. All subjects performed the discrimination by the second session of two. These data support existing results from similar learning and memory tasks.
 
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  Publisher DEPARTMENT OF PSYCHOLOGY Place of Publication MISSOURI WESTERN STATE COLLEGE Editor  
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  Call Number Equine Behaviour @ team @ Serial 3621  
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Author unknown url  openurl
  Title EQUINE SOCIAL INTELLIGENCE Type Journal Article
  Year Publication Abbreviated Journal  
  Volume (up) Issue Pages  
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  Abstract INTRODUCTION to the social intelligence tests

This document contains the result of adjusting 12 tests written for dogs to the sensory modes and size

of horses. Stanley Coren calls the tests “Canine IQ Tests,” but also says the tests are probably

measurements of “social intelligence.” Coren's book also contains the list of dog breeds ranked by

score on these tests. The technical, psychological definition of “intelligence” is not relevant to these

tests (the usual academic caveats about data and variables). Also, an animal that is very clever and is

not interested in interacting with humans will score low on these tests, so if your horse is a low scorer,

it may mean that people just are not interesting for him.

I am posting the tests because 1) my riding club thought they were fun when I showed them the video

record of the testing protocol and 2) the several horses tested thought they were fun. Of these horses,

my two (a German sport horse and a Morgan) became more alert in responding to their human

companion (me) after the tests were run....
 
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3622  
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Author unknown url  openurl
  Title Horse – Perception – Vision Type Book Chapter
  Year Publication Abbreviated Journal  
  Volume (up) Issue Pages  
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  Abstract Horses have been described as being among the

most perceptive of animals.1 By studying the

sensory perception of horses, we gain valuable

insights into their behavior. The differences

between human and equine perceptions of the

external environment can be explained by the

differences in their sensory structures. The horses

adept perception has allowed it to be constantly

aware of changes occurring in its surroundings

and has played a pivotal role in the success of this

species. An appreciation and understanding of

the horses well-developed sensory system are

valuable tools, particularly when attempting to

understand distinctive aspects of equine behavior.
 
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3645  
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Author McCall, C.A.; Hall, S.; McElhenney, W.H.; Cummins, K.A. url  openurl
  Title EVALUATION AND COMPARISON OF FOUR REACTIVITY TESTS IN HORSES Type Conference Article
  Year 2010 Publication Proc.17th Equine Nutr. Physiol. Symp Abbreviated Journal  
  Volume (up) Issue Pages 357  
  Keywords  
  Abstract Four methods of ranking horses on reactivity were evaluated and compared: isolation from conspecifics, presentation of a static novel stimulus, traversing a novel stimulus in a runway (isolation, novel stimulus and runways tests, respectively) and assigning subjective emotionality scores. Forty horses performed each of the three tests daily on three different days in a switchback design where treatments were injection of a tranquilizer or vehicle. Horses were randomly assigned a daily test sequence, which was maintained throughout the study. In all tests, heart rates were recorded and behavior was videotaped. To be considered a valid test of reactivity, at least one heart rate and one behavioural measurement in the test had to show a significant difference due to tranquilization, and behavioural measures had to be displayed in at least 75% of the trials. In the runway test, no significant difference in heart rate values in tranquilized and non-tranquilized horses was found, and no behavioural attribute was displayed in more than 52% of the trials; therefore it was rejected as a valid test of reactivity. Both isolation and novel stimulus tests produced valid measurements. Mean heart rate was the most precise physiological measure for these tests, and walking and defecation frequency were the most precise behavioural measures for novel stimulus and isolation tests, respectively. Mean heart rates on the novel stimulus and isolation tests were correlated (rs=0.79, P<0.01) indicating that these tests produced similar rankings based on physiological responses. However, behavioural measures ranked horses differently (rs=0.27, P<0.10) on the tests. Rank correlations between mean heart rates and behavioural measures were higher in the novel stimulus (rs = 0.66, P<0.01) than the isolation test (rs = 0.55, P<0.01), indicating that the novel stimulus test ranked horses based on either physiological or behavioural responses more similarly than did the isolation test. Therefore, the novel stimulus test was considered the more accurate evaluation of reactivity. Subjective emotionality scores were correlated moderately with mean heart rates (rs > 0.33, P<0.01) from the novel stimulus and isolation tests and with walking scores (rs = 0.47, P<0.01) from the novel stimulus test. Assignment of subjective emotionality scores was not as accurate as the novel stimulus or isolation tests in ranking horses for reactivity. Using physiological data alone, combining physiological and behavioural measurements or using more than one behavioural measurement in reactivity tests may reflect the reactivity of the horse better than a single behavioural measurement.  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Lexington, KY Editor  
  Language Summary Language Original Title  
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  Notes Approved no  
  Call Number Equine Behaviour @ team @ Serial 3689  
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Author Bystrom, A.; Roepstorff, L.; Johnston, C. openurl 
  Title Effects of draw reins on limb kinematics Type Journal Article
  Year 2006 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume (up) Issue 36 Pages 452-456  
  Keywords Animals; Biomechanics; Exercise Test; Forelimb/physiology; Head/physiology; Hindlimb/physiology; Horses/*physiology; Humans; Movement/physiology; Neck/physiology; Physical Conditioning, Animal/*methods/*physiology; Weight-Bearing/physiology  
  Abstract REASONS FOR PERFORMING STUDY: No data exist on the GRF-kinematics relation due to changes caused by equestrian interventions. HYPOTHESIS: Through the judicious use of draw reins the rider can influence the kinematics of the horse to meet stated goals of dressage training. Relating the results to previously published kinetic data of the same experiment implies a possible relationship between kinetics and kinematics. METHODS: The kinematics of 8 sound Swedish Warmblood horses were measured whilst the horses were being ridden with and without draw reins. Three conditions were evaluated: 1) draw reins only (DR), 2) combination of draw reins and normal reins (NR+DR) and 3) normal reins only (NR). RESULTS: Head and neck angles were significantly decreased by the draw rein but 4-5 times more so for DR when with NR+DR. The forelimb position at hoof lift-off was significantly more caudal with DR. In the hind limb the hip joint extended more quickly and the hock joint flexed more with NR+DR than with NR. Compared to DR the hip joint angular pattern was not significantly different, but the pelvis was more horizontal. CONCLUSION: Riding with a draw rein can have significant influence on the kinematics of the horse. Some of the observed changes can be coupled to changes in kinetics. The hock joint angle seems to be a fairly reliable indicator of load on the hind limb and the angle of femur appears important for hind limb propulsion, when considered in conjunction with the orientation of the pelvis. POTENTIAL RELEVANCE: These findings are important for riders and trainers, as kinematic changes are what trainers observe. It is thereby important to ascertain which kinematic changes are consistently coupled to changes in kinetics in order for trainers to be able to judge correctly the success of intended goals. Further studies are warranted to validate and confirm suggested relationships between kinetics and kinematics.  
  Address Department of Equine Studies, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden  
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  Language English Summary Language Original Title  
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  Notes PMID:17402465 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3701  
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Author Gomez Alvarez, C.B.; Rhodin, M.; Bobber, M.F.; Meyer, H.; Weishaupt, M.A.; Johnston, C.; Van Weeren, P.R. openurl 
  Title The effect of head and neck position on the thoracolumbar kinematics in the unridden horse Type Journal Article
  Year 2006 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume (up) Issue 36 Pages 445-451  
  Keywords Animals; Biomechanics; Head/*physiology; Horses/*physiology; Lumbar Vertebrae/physiology; Male; Neck/*physiology; Physical Conditioning, Animal/physiology; Posture/*physiology; Sports; Thoracic Vertebrae/physiology; Weight-Bearing  
  Abstract REASONS FOR PERFORMING STUDY: In many equestrian activities a specific position of head and/or neck is required that is dissimilar to the natural position. There is controversy about the effects of these positions on locomotion pattern, but few quantitative data are available. OBJECTIVES: To quantify the effects of 5 different head and neck positions on thoracolumbar kinematics of the horse. METHODS: Kinematics of 7 high level dressage horses were measured walking and trotting on an instrumented treadmill with the head and neck in the following positions: HNP2 = neck raised, bridge of the nose in front of the vertical; HNP3 = as HNP2 with bridge of the nose behind the vertical; HNP4 = head and neck lowered, nose behind the vertical; HNP5 = head and neck in extreme high position; HNP6 = head and neck forward and downward. HNP1 was a speed-matched control (head and neck unrestrained). RESULTS: The head and neck positions affected only the flexion-extension motion. The positions in which the neck was extended (HNP2, 3, 5) increased extension in the anterior thoracic region, but increased flexion in the posterior thoracic and lumbar region. For HNP4 the pattern was the opposite. Positions 2, 3 and 5 reduced the flexion-extension range of motion (ROM) while HNP4 increased it. HNP5 was the only position that negatively affected intravertebral pattern symmetry and reduced hindlimb protraction. The stride length was significantly reduced at walk in positions 2, 3, 4 and 5. CONCLUSIONS: There is a significant influence of head/neck position on back kinematics. Elevated head and neck induce extension in the thoracic region and flexion in the lumbar region; besides reducing the sagittal range of motion. Lowered head and neck produces the opposite. A very high position of the head and neck seems to disturb normal kinematics. POTENTIAL RELEVANCE: This study provides quantitative data on the effect of head/neck positions on thoracolumbar motion and may help in discussions on the ethical acceptability of some training methods.  
  Address Department of Equine Sciences, Utrecht University, Yalelaan 12, 3584 CM Utrecht, The Netherlands  
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  Notes PMID:17402464 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3702  
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Author Murray, R.C.; Dyson, S.J.; Tranquille, C.; Adams, V. openurl 
  Title Association of type of sport and performance level with anatomical site of orthopaedic injury diagnosis Type Journal Article
  Year 2006 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume (up) Issue 36 Pages 411-416  
  Keywords Animals; Athletic Injuries/diagnosis/etiology/*veterinary; Bone and Bones/*injuries; Chi-Square Distribution; Diagnosis, Differential; Female; *Horses/injuries/physiology; Logistic Models; Male; Physical Conditioning, Animal/*adverse effects/*physiology; Physical Examination/veterinary; Risk Factors; Sports  
  Abstract REASON FOR PERFORMING STUDY: Although anecdotal reports of increased orthopaedic injury risk in equine sports exist, there is little scientific evidence to support this. OBJECTIVES: To test whether horses undertaking a single competitive sport have increased risk of specific injuries compared to those used for general purpose riding (GP); and whether injury type varies with sport category and performance level. METHODS: Data from 1069 records of horses undergoing orthopaedic evaluation (1998-2003) and meeting inclusion criteria were reviewed. Sport category (GP, showjumping, dressage, eventing, racing), level (nonelite or elite) and diagnosis were recorded. Effects of sport category and level on probability of a specific diagnosis were assessed using chi-squared tests. Logistic regression was used to determine which competitive sports and levels increased risk of injury compared with GP. RESULTS: Overall there was a significant effect of sport category and level on diagnosis (P<0.0001). There was significant difference between anatomical site injured and sport category (P<0.0001); a high risk of forelimb superficial digital flexor tendon injury in elite eventing (P<0.0001) and elite showjumping (P = 0.02); distal deep digital flexor tendon (DDFT) injury in elite showjumping (P = 0.002); and hindlimb suspensory ligament injury in elite (P<0.0001) and nonelite (P = 0.001) dressage. There was a low risk of tarsal injury in elite eventing (P = 0.01) and proximal DDFT injury in dressage (P = 0.01). CONCLUSIONS: Horses competing in different sports are predisposed to specific injuries; particular sports may increase the risk of injury at certain anatomical sites; and the type and site of injury may reflect the type and level of performance. POTENTIAL RELEVANCE: These findings could guide clinicians in the diagnosis of sport related injuries.  
  Address Animal Health Trust, Lanwades Park, Kenfford, Newmarket, Suffolk, CB8 7UU, UK  
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  Language English Summary Language Original Title  
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  Notes PMID:17402457 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3703  
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Author Weishaupt, M.A.; Wiestner, T.; von Peinen, K.; Waldern, N.; Roepstorff, L.; van Weeren, R.; Meyer, H.; Johnston, C. openurl 
  Title Effect of head and neck position on vertical ground reaction forces and interlimb coordination in the dressage horse ridden at walk and trot on a treadmill Type Journal Article
  Year 2006 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume (up) Issue 36 Pages 387-392  
  Keywords Animals; Biomechanics; Exercise Test/instrumentation/methods/*veterinary; Forelimb/physiology; Gait; Head/physiology; Hindlimb/physiology; Horses/*physiology; Locomotion/*physiology; Male; Neck/physiology; Physical Conditioning, Animal/methods/*physiology; Posture; Statistics, Nonparametric; Walking/*physiology  
  Abstract REASONS FOR PERFORMING STUDY: Little is known in quantitative terms about the influence of different head-neck positions (HNPs) on the loading pattern of the locomotor apparatus. Therefore it is difficult to predict whether a specific riding technique is beneficial for the horse or if it may increase the risk for injury. OBJECTIVE: To improve the understanding of forelimb-hindlimb balance and its underlying temporal changes in relation to different head and neck positions. METHODS: Vertical ground reaction force and time parameters of each limb were measured in 7 high level dressage horses while being ridden at walk and trot on an instrumented treadmill in 6 predetermined HNPs: HNP1 – free, unrestrained with loose reins; HNP2 – neck raised, bridge of the nose in front of the vertical; HNP3 – neck raised, bridge of the nose behind the vertical; HNP4 – neck lowered and flexed, bridge of the nose considerably behind the vertical; HNP5 – neck extremely elevated and bridge of the nose considerably in front of the vertical; HNP6 – neck and head extended forward and downward. Positions were judged by a qualified dressage judge. HNPs were assessed by comparing the data to a velocity-matched reference HNP (HNP2). Differences were tested using paired t test or Wilcoxon signed rank test (P<0.05). RESULTS: At the walk, stride duration and overreach distance increased in HNP1, but decreased in HNP3 and HNP5. Stride impulse was shifted to the forehand in HNP1 and HNP6, but shifted to the hindquarters in HNP5. At the trot, stride duration increased in HNP4 and HNP5. Overreach distance was shorter in HNP4. Stride impulse shifted to the hindquarters in HNP5. In HNP1 peak forces decreased in the forelimbs; in HNP5 peak forces increased in fore- and hindlimbs. CONCLUSIONS: HNP5 had the biggest impact on limb timing and load distribution and behaved inversely to HNP1 and HNP6. Shortening of forelimb stance duration in HNP5 increased peak forces although the percentage of stride impulse carried by the forelimbs decreased. POTENTIAL RELEVANCE: An extremely high HNP affects functionality much more than an extremely low neck.  
  Address Equine Hospital, University of Zurich, CH-8057 Zurich, Switzerland  
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  Language English Summary Language Original Title  
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  Notes PMID:17402453 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3704  
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Author Cayado, P.; Munoz-Escassi, B.; Dominguez, C.; Manley, W.; Olabarri, B.; Sanchez de la Muela, M.; Castejon, F.; Maranon, G.; Vara, E. openurl 
  Title Hormone response to training and competition in athletic horses Type Journal Article
  Year 2006 Publication Equine Veterinary Journal. Supplement Abbreviated Journal Equine Vet J Suppl  
  Volume (up) Issue 36 Pages 274-278  
  Keywords Adrenocorticotropic Hormone/*blood; Animals; Case-Control Studies; *Horses/blood/physiology/psychology; Hydrocortisone/*blood; Physical Conditioning, Animal/*physiology; Sports; *Stress, Psychological  
  Abstract REASONS FOR PERFORMING STUDY: It is recognised that the amount of psychological stress that an animal encounters determines the degree of response of the hypothalamic-pituitary-adrenal (HPA) axis. In human athletes, the added emotive stress of competition is an important element in the adrenal response. The aim of this study was to examine the effect of show-jumping as well as dressage on stress levels by comparing horses' stress response at a horse show compared to their familiar home. METHODS: Fifty-one horses involved in competition were used. EDTA blood samples were collected before exercise, upon arrived to the schooling area (control), and k over a jump or dressage course. After sampling, plasma was separated and stored at -80 degrees C until determinations of cortisol and ACTH were performed. Fourteen healthy horses not involved in competition were used as control group. RESULTS: Competition induced a significant increase in cortisol and ACTH responses in both, jumping and dressage horses and this effect was more apparent in dressage horses. When horses were most experienced, cortisol and ACTH responses were much lower. CONCLUSION: This study shows that competition elicits a classic physiological stress response in horses and that different training programmes induce different responses. It suggests that horses involved in competition can provide a good model to study the exercise-induced stress response.  
  Address Hospital SL., Madrid, Spain  
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  Notes PMID:17402431 Approved no  
  Call Number Equine Behaviour @ team @ Serial 3705  
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