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Anderson, M.K.; Friend, T.H.; Evans, J.W.; Bushong, D.M. |
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Title |
Behavioral assessment of horses in therapeutic riding programs |
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1999 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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63 |
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1 |
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11-24 |
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Horses; Therapeutic riding; Temperament; Cortisol; Catecholamines |
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A behavioral assessment of horses who were being used and not used in therapeutic riding programs was conducted to help determine useful methods of selecting horses for use in therapeutic riding programs. A total of 103 horses (76 horses from five therapeutic riding centers and 27 non-therapeutic riding horses from four sites) were used. Temperament survey for each horse were completed by three riding instructors at each therapeutic riding center or by the individual most knowledgeable about the horse at the other sites. Twenty personality traits from the survey were used to quantify temperament. Concentrations of plasma cortisol, norepinephrine and epinephrine were also measured in each horse. A reactivity test was then conducted which involved introducing three novel stimuli: a walking and vocalizing toy pig placed on a cardboard surface in front of the horse for 20 s; popping a balloon near the horse's flank area; and suddenly opening an umbrella and holding it open in front of the horse for 20 s. Reactions (expressions, vocalizations and movement) to each of the stimuli were scored and used to calculate an average reactivity score for each horse. The therapeutic riding instructors did not often agree on the temperament of their center's horses. The personality trait ratings made by the therapeutic riding instructors at each center were on average significantly correlated (P<0.01, r>0.52) for only 37.8% of the horses for any two instructors and 7.8% for three instructors. No significant correlations were found between temperament, reactivity, and the hormone concentrations (r<0.19), but regression analysis indicated a possibility of predicting temperament from the reactivity score and hormone concentrations (P<0.08). There was also a tendency for relationships between extremes in temperament (desirable vs. undesirable) and the hormone concentrations (P<0.09), and between extremes in reactivity (low vs. high) and the hormone concentrations (P=0.08). The difference in ratings among riding instructors indicates a need for more collaboration between instructors when evaluating horse temperament. This study also indicates that it was very difficult to objectively determine the suitability of horses for therapeutic riding programs regarding their temperament and reactivity, probably because other traits (e.g., smoothness of gait) are also considered very important. |
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0168-1591 |
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Equine Behaviour @ team @ |
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4812 |
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Author |
Baer, K.L.; Potter, G.D.; Friend, T.H.; Beaver, B.V. |
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Title |
Observation effects on learning in horses |
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Journal Article |
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Year |
1983 |
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Applied Animal Ethology |
Abbreviated Journal |
Appl. Animal. Ethol. |
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11 |
Issue |
2 |
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123-129 |
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Sixteen horses, divided into 2 groups of 8, were used to study observational learning in horses. One group served as controls while the other group served as the treated group (observers). Observers were allowed to watch a correctly performed discrimination task for 5 days prior to testing their learning response using the same task. Discrimination testing was conducted on all horses daily for 14 days, with criterion set at 7 out of 8 responses correct with the last 5 consecutively correct. The maximum number of trials performed without reaching criterion was limited to 20 per day. Mean trials to criteria (MT) by group were: control, 11.25; observer, 10.70. Mean error (ME) scores were: control, 2.37; observer, 2.02. Average initial discrimination error scores were 11.13 for control and 10.38 for observers (P < 0.10). Asymptote was reached by Day 8 for both control and observer groups. Analysis of variance with repeated measures showed an extreme-day effect indicative of learning (P < 0.01), with non-significant differences in learning rate between experimental groups. Whether the initial ability of the horses to perform a discrimination learning task was enhanced by observation of other horses' performance of that task was not obvious from these data. |
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refbase @ user @ |
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726 |
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Blakeman, N.E.; Friend, T.H. |
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Visual discrimination at varying distances in Spanish goats |
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1986 |
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Appl Anim Behav Sci |
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16 |
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Equine Behaviour @ team @ Blakeman1986 |
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6251 |
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Mal, M.E.; Friend, T.H.; Lay, D.C.; Vogelsang, S.G.; Jenkins, O.C. |
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Title |
Behavioral responses of mares to short-term confinement and social isolation |
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1991 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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31 |
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1-2 |
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13-24 |
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Thirty-six mares, blocked by age and temperament score, were assigned to one of three treatment groups: pasture (P); confinement stalls (C), allowing social contact; isolation stalls (ISS), allowing no contact with conspecifics. After 48 h on treatment, the mares were observed in situ for 1 h. Medium temperament and highly reactive ISS mares spent more time eating grain (P<0.01) and exhibited more grain-eating bouts (P<0.03) than P and C mares. Calm P mares had longer forage-eating bouts than C and ISS mares (P<0.02). During a 15 min open-field test in a 23 m x 23 m pen after 72 h on treatment, ISS mares traveled farther (P<0.005) than C and P mares, spent more total time trotting (P<0.01) than C and P mares, and exhibited a greater number of trotting bouts (P<0.01) than both C and P mares. Isolated mares spent less total time standing during the open-field test than C (P<0.05) and P (P<0.01) mares, but exhibited a greater number of standing bouts than C (P<0.05) and P (P<0.01) mares. Isolated mares also exhibited a greater number of total activity bouts (P<0.01) during the open-field test than both C and P mares; P mares also exhibited fewer activity bouts than C mares (P<0.1). Results indicate that mares kept in confined and isolated environments showed greater motivation for movement and performance of a greater number of activities than those maintained on pasture with conspecifics. |
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0168-1591 |
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Equine Behaviour @ team @ |
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4820 |
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McCall, C.A.; Potter, G.D.; Friend, T.H.; Ingram, R.S. |
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Title |
Learning abilities in yearling horses using the Hebb-Williams closed field maze |
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Year |
1981 |
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J. Anim. Sci. |
Abbreviated Journal |
J. Anim. Sci. |
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53 |
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4 |
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928-933 |
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Cited By (since 1996): 9; Export Date: 24 October 2008 |
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Admin @ knut @ |
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4613 |
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Williams, J.L.; Friend, T.H.; Collins, M.N.; Toscano, M.J.; Sisto-Burt, A.; Nevill, C.H. |
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Title |
Effects of imprint training procedure at birth on the reactions of foals at age six months |
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2003 |
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Equine Veterinary Journal |
Abbreviated Journal |
Equine Vet J |
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35 |
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2 |
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127-132 |
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Age Factors; Animal Husbandry/methods; Animals; Animals, Newborn/*psychology; *Behavior, Animal; *Bonding, Human-Pet; Female; Handling (Psychology); Horses/*psychology; Humans; *Imprinting (Psychology); Male; Random Allocation; Socialization; Time Factors |
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REASONS FOR PERFORMING STUDY: While imprint training procedures have been promoted in popular magazines, they have received limited scientific investigation. OBJECTIVES: To determine the effects of a neonatal imprint training procedure on 6-month-old foals and to determine if any one session had a greater effect than others. METHODS: Foals (n = 131) were divided into the following treatments: no imprint training, imprint training at birth, 12, 24 and 48 h after birth or imprint training only at birth, 12, 24, 48, or 72 h after birth. Foals then received minimal human handling until they were tested at 6 months. RESULTS: During training, time to complete exposure to the stimulus was significant for only 2 of 6 stimuli. Percentage change in baseline heart rate was significant for only 2 of 10 stimuli. These 4 effects were randomly spread across treatments. CONCLUSIONS: Neither the number of imprint training sessions (0, 1, or 4) nor the timing of imprint training sessions (none, birth, 12, 24, 48, or 72 h after birth) influenced the foal's behaviour at 6 months of age. POTENTIAL CLINICAL RELEVANCE: In this study, imprint training did not result in better behaved, less reactive foals. |
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Department of Animal Science, 2471 TAMUS, Texas A&M University College Station, Texas 77845-2471, USA |
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0425-1644 |
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PMID:12638787 |
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1908 |
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Williams, J.L.; Friend, T.H.; Nevill, C.H.; Archer, G. |
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The efficacy of a secondary reinforcer (clicker) during acquisition and extinction of an operant task in horses |
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2004 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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88 |
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3-4 |
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331-341 |
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Equine; Horse; Clicker training; Operant conditioning; Secondary reinforcers |
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“Clicker training” is a popularly promoted training method based on operant conditioning with the use of a secondary reinforcer (the clicker). While this method draws from theories of learning and is used widely, there has been little scientific investigation of its efficacy. We used 60 horses, Equus callabus, and assigned each horse to one of six reinforcement protocols. The reinforcement protocols involved combinations of reinforcers administered (primary versus secondary plus primary), schedule of reinforcement (continuous versus variable ratio), and reinforcers applied during extinction (none or secondary). There were no differences (P>=0.11) between horses which received a secondary reinforcer (click) followed by the primary reinforcer (food) and those which received only the primary reinforcer (food) in the number of trials required to train the horses to touch their noses to a plastic cone (operant response). There also were no differences (P>=0.12) between horses which received the secondary reinforcer plus primary reinforcer and those which received only the primary reinforcer in regards to the number of trials to extinction. We conclude that there is no difference in the amount of training required to learn the operant task or in the task's resistance to extinction between horses that received a secondary reinforcer followed by a primary reinforcer versus horses which received only a primary reinforcer. |
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Equine Behaviour @ team @ |
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3581 |
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Williams, J.L.; Friend, T.H.; Toscano, M.J.; Collins, M.N.; Sisto-Burt, A.; Nevill, C.H. |
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Title |
The effects of early training sessions on the reactions of foals at 1, 2, and 3 months of age |
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2002 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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77 |
Issue |
2 |
Pages |
105-114 |
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Keywords |
Equine; Imprint training; Imprinting; Learning; Training; Handling; Foal |
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An early training procedure commonly termed “foal imprint training” is widely promoted in the horse industry. However, there have been no published scientific investigations of its efficacy. This study determined the effects of a training procedure on foals and their reaction to stimuli used in the early training procedure, and to a novel stimulus, at 1, 2 and 3 months of age. Twenty-five foals received a standard training procedure at 2, 12, 24, and 48 h after birth. After the training procedure, the foals received minimal additional handling that included veterinary treatments and occasional relocation. Twenty-two foals born over the same time period served as controls. All 47 (25 trained, 22 control) foals were tested at 1 month of age. Only 20 were available for testing at 2 months of age, and nine were available at 3 months. Percentage change from baseline heart rate, time required to complete exposure to each stimulus (foals that were more reactive took longer) and the behavior of each foal during the introduction of each stimulus were recorded. Overall, the control foals tended to receive lower (better) behavioral scores at 1 and 2 months of age. Foals that underwent the training procedure tended to require less time to complete exposure to the stimulus and had lower heart rates during exposure to the stimuli at 1 and 2 months of age. By 3 months of age, there were no significant differences between trained and control foals for any measures. Early training was not efficacious in this study. |
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Equine Behaviour @ team @ |
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4331 |
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