| Records |
Author  |
Luescher, U.A.; McKeown, D.B.; Dean, H. |
| Title |
A cross-sectional study on compulsive behaviour (stable vices) in horses |
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Journal Article |
| Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
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27 |
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14-18 |
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Cited By (since 1996): 22; Export Date: 21 October 2008 |
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Equine Behaviour @ team @ |
Serial |
4527 |
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Marshall, T.T.; Hoover, T.S.; Reiling, B.A.; Downs, K.M. |
| Title |
Experiential learning in the animal sciences: effect of 13 years of a beef cattle management practicum |
Type |
Journal Article |
| Year |
1998 |
Publication |
Journal of Animal Science |
Abbreviated Journal |
J. Anim Sci. |
| Volume |
76 |
Issue |
11 |
Pages |
2947-2952 |
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Equine Behaviour @ team @ |
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2938 |
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| Author |
Matsumura, S.; Kobayashi, T. |
| Title |
A game model for dominance relations among group-living animals |
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Journal Article |
| Year |
1998 |
Publication |
Behavioral Ecology and Sociobiology |
Abbreviated Journal |
Behav. Ecol. Sociobiol. |
| Volume |
42 |
Issue |
2 |
Pages |
77-84 |
| Keywords |
Dominance – Hawk-dove games – Resource-holding potential – Asymmetry – Evolutionarily stable strategy |
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Abstract We present here an attempt to understand behaviors of dominant individuals and of subordinate individuals as behavior strategies in an asymmetric “hawk-dove” game. We assume that contestants have perfect information about relative fighting ability and the value of the resource. Any type of asymmetry, both relevant to and irrelevant to the fighting ability, can be considered. It is concluded that evolutionarily stable strategies (ESSs) depend on the resource value (V), the cost of injury (D), and the probability that the individual in one role will win (x). Different ESSs can exist even when values of V, D, and x are the same. The characteristics of dominance relations detected by observers may result from the ESSs that the individuals are adopting. The model explains some characteristics of dominance relations, for example, the consistent outcome of contests, the rare occurrence of escalated fights, and the discrepancy between resource holding potential (RHP) and dominance relations, from the viewpoint of individual selection. |
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Equine Behaviour @ team @ |
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5102 |
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| Author |
McGreevy, P.D.; Nicol, C.J. |
| Title |
Prevention of crib-biting: a review |
Type |
Journal Article |
| Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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27 |
Pages |
35-38 |
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Animals; *Behavior, Animal; Horse Diseases/*prevention & control/psychology; Horses; *Stereotyped Behavior |
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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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English |
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PMID:10485002 |
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no |
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refbase @ user @ |
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87 |
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| Author |
McGreevy, P.D.; Nicol, C.J. |
| Title |
The effect of short-term prevention on the subsequent rate of crib-biting in thoroughbred horses |
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Journal Article |
| Year |
1998 |
Publication |
Equine veterinary journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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Issue |
27 |
Pages |
30-34 |
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Analysis of Variance; Animals; *Behavior, Animal; Horse Diseases/*prevention & control/psychology; Horses; Male; Recurrence; *Stereotyped Behavior; Videotape Recording |
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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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no |
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refbase @ user @ |
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88 |
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| Author |
McLaren I.P.L. |
| Title |
Animal Learning and Cognition: A neural network approach |
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Journal Article |
| Year |
1998 |
Publication |
Trends in Cognitive Sciences |
Abbreviated Journal |
Trends. Cognit. Sci. |
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2 |
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236-236 |
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no |
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refbase @ user @ |
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3464 |
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| Author |
McNelis, N.L.; Boatright-Horowitz, S.L. |
| Title |
Social monitoring in a primate group: the relationship between visual attention and hierarchical ranks |
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Journal Article |
| Year |
1998 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
1 |
Issue |
1 |
Pages |
65-69 |
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Social monitoring has been hypothesized to be an important component of primate social behavior. If the gaze direction of one animal can redirect the gaze of another, visual scanning of conspecifics can provide a more efficient means of locating food or predators than directly scanning the entire nonsocial environment. Social monitoring also allows distance regulation between members of a group, reducing the likelihood of agonistic encounters. Although assessment of gaze direction in freely moving primates is problematic, we were successful in assessing amounts of visual scanning among adult females of a captive, socially housed group of patas monkeys (Erythrocebus patas) using a focal sampling technique with on-the-dot recording (5-s sampling intervals). In study 1, relative amounts of scanning were assessed as subjects gazed at any other member of the group. Percentages of agreement between observers ranged from 80% to 92%, with corresponding s values ranging from 0.74 to 0.92. In study 2, relative amounts of visual scanning were assessed so that specific targets of gaze were identified. The resultant data supported a long-standing prediction about the role of social monitoring in primate group dynamics. Lower-ranking animals gazed toward higher-ranking animals more often than vice versa. Although the specific cues eliciting social monitoring remain to be determined, visual attention in this social primate group appeared to be systematically related to hierarchical ranks, assessed by displacements. Minimally, these results suggest that patas monkeys structure their visual attention based on previous encounters with other members of their social group. While simple discrimination learning could account for these results, the demonstration of a systematic relationship between visual attention and primate social dynamics is relevant to current discussions of a primate's understanding of conspecific gaze direction. |
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Equine Behaviour @ team @ |
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3377 |
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| Author |
Mench, J.A.; Morrow-Tesch, J.; Chu, L.-R. |
| Title |
Environmental enrichment for farm animals |
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Journal Article |
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1998 |
Publication |
Lab Animal |
Abbreviated Journal |
Lab Anim. |
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27 |
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32-36 |
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ISSN : 0093-7355 |
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no |
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Equine Behaviour @ team @ |
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6188 |
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Mesulam, M.-M. |
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Review article. From sensation to cognition |
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Journal Article |
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1998 |
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Brain |
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121 |
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1013-1052 |
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refbase @ user @ |
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3467 |
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Miklósi, A.; Polgárdi, R.; Topál, J.; Csányi, V. |
| Title |
Use of experimenter-given cues in dogs |
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Journal Article |
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1998 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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1 |
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2 |
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113-121 |
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Since the observations of O. Pfungst the use of human-provided cues by animals has been well-known in the behavioural sciences (“Clever Hans effect”). It has recently been shown that rhesus monkeys (Macaca mulatta) are unable to use the direction of gazing by the experimenter as a cue for finding food, although after some training they learned to respond to pointing by hand. Direction of gaze is used by chimpanzees, however. Dogs (Canis familiaris) are believed to be sensitive to human gestural communication but their ability has never been formally tested. In three experiments we examined whether dogs can respond to cues given by humans. We found that dogs are able to utilize pointing, bowing, nodding, head-turning and glancing gestures of humans as cues for finding hidden food. Dogs were also able to generalize from one person (owner) to another familiar person (experimenter) in using the same gestures as cues. Baseline trials were run to test the possibility that odour cues alone could be responsible for the dogs' performance. During training individual performance showed limited variability, probably because some dogs already “knew” some of the cues from their earlier experiences with humans. We suggest that the phenomenon of dogs responding to cues given by humans is better analysed as a case of interspecific communication than in terms of discrimination learning. |
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Equine Behaviour @ team @ |
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3378 |
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