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Author |
Covalesky, M.E.; Russoniello, C.R.; Malinowski, K. |
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Title |
Effects of show-jumping performance stress on plasma cortisol and lactate concentrations and heart rate and behavior in horses |
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Journal Article |
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Year |
1992 |
Publication |
Journal of Equine Veterinary Science |
Abbreviated Journal |
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Volume |
12 |
Issue |
4 |
Pages |
244-251 |
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Abstract |
Summary Effects of show jumping competition on stress levels in horses was examined. Twenty-six homes were sampled in both show and farm environments from three levels of show experience schooling, (least experience, n=11); intermediate, (moderate experience, n=6); open, (most experience, n=9). Blood samples were taken at 6 time points; 3 at the horse show and 3 at the home farm (baseline at rest, pre-schooling and post-performance over a jump course). Stress responses were assessed through comparison of the behavioral response of the horses (determined by a subjective scoring system) to plasma cortisol (F) concentrations. Physical exertion was evaluated by heart rate (HR) and plasma lactate (L) concentrations. Schooling jumpers displayed higher baseline F concentrations than open jumpers (83g±9.2 vs 46.4±10.2 ng/ml, respectively; p<.05); but not when compared to intermediate jumpers (66.2 ± 13.7 ng/ml; p>.05) at the horse show. At the farm, there were no differences in F concentrations between experience levels at a time point (p<.05). Least experienced horses displayed higher F values at rest at the show compared to the home farm. At the show, open jumpers had higher L concentrations post-exercise compared to intermediate horses (40.3±3.4 vs 25.5±4.0 mg/dL, respectively; p<.05); but were not different compared to schooling jumpers (34.8±2.0 mg/dL; p>.05). There were no differences in heart rates or behavior score between experience levels at specific time points at either the show or farm (p>.05). Low positive correlations were found between HR and F (r=.24, p<.05); HR and L (r-.48, p<.05); and HR and behavior (r=.22, p<.05). Results suggest that conditioned jumpers that have previously been exposed to horse show environments do not appear stressed during acute show-jumping competition. |
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0737-0806 |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5622 |
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Author |
Clark, M.L.; Ayers, M. |
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Title |
Friendship similarity during early adolescence: gender and racial patterns |
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Journal Article |
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Year |
1992 |
Publication |
The Journal of Psychology |
Abbreviated Journal |
J Psychol |
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Volume |
126 |
Issue |
4 |
Pages |
393-405 |
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Keywords |
Achievement; Adolescent; African Americans/*psychology; *Cross-Cultural Comparison; Female; *Gender Identity; Humans; Individuality; *Interpersonal Relations; Male; *Personality Development; Personality Inventory; Sociometric Techniques |
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Abstract |
We studied the relationship of reciprocity, gender, and racial composition (Caucasian, African American, cross-race) of adolescent friendship dyads to similarity and proximity in 136 young adolescents. We found that adolescents selected friends who were of the same gender and race and that female dyads were more similar than male dyads on verbal achievement and several personality dimensions. Caucasian dyads were more similar than African American dyads on verbal achievement, mental alertness, and dominance. African American adolescents had more contact with their best friends outside school, whereas Caucasian adolescent friends had more in-school contact. African American students had fewer reciprocal relationships than the Caucasian students. Cross-race friendships were less reciprocal than same-race friendships. Race and gender were important in determining friendship patterns. Similarity and proximity were more important than reciprocity in understanding early adolescent friendships. |
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Department of Psychology, Virginia Commonwealth University |
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English |
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0022-3980 |
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PMID:1403972 |
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Equine Behaviour @ team @ |
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5628 |
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Author |
Leng, V. |
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Title |
Das Vielseitigkeitspferd. Der Vielseitigkeitsreiter. Ausbildung, Training, Event. |
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Year |
1992 |
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Blv Verlagsgesellschaft |
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München |
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3 405 14344 6 |
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Equine Behaviour @ team @ |
Serial |
4438 |
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Author |
Davis, H.; Balfour, D. (eds) |
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Title |
The Inevitable Bond: Examining Scientist-Animal Interactions |
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Book Whole |
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Year |
1992 |
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Abstract |
Book Description
Although animals are widely employed as research subjects, it is only recently that we have acknowledged the bond that frequently, perhaps inevitably, develops between subject and researcher. Whatever the qualities of this relationship, an increasing body of evidence suggests that it may result in profound behavioural and physiological changes in the animal subject. Such effects are apparent in behavioural studies conducted in both laboratory and field settings. They also appear in physiological studies ranging from the biomedical (e.g. heart rate, blood pressure, immunological changes) to animal science (e.g. growth, reproduction). Such effects are not confined to obvious cases involving primates and dogs, but appear in unexpected animals like chickens, reptiles and even octopuses. Despite the fact that most researchers are trained to minimise or avoid such interactions, they continue to occur. This book, the first of its kind to address this issue systematically, describes many examples of this “inevitable bond” between scientist and animal. This discussion will allow researchers to anticipate these potentially confounding effects and take advantage of such relationships in designing more effective and humane environments for animal subjects. |
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Cambridge University Press |
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Cambridge, Massachusetts |
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Davis, H.; Balfour, D. |
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978-0521405102 |
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Equine Behaviour @ team @ |
Serial |
3595 |
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Author |
Duncan P, |
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Title |
Zebras, asses, and horses |
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Book Whole |
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Year |
1992 |
Publication |
Kelvyn Press USA |
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Abstract |
Provides summaries of the conservation status, biology, and ecology of wild zebras, asses, and horses. The Action Plan presents chapters on taxonomy, genetics, reproductive biology, population dynamics, management, disease and epidemiology, and the importance of developing an assessment methodology that considers the role of equids in ecosystems. |
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Kelvyn Press |
Place of Publication |
Broadview, Illinois |
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978-2831700564 |
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Notes |
from Professor Hans Klingels Equine Reference List JA - |
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yes |
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1032 |
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Author |
de Waal, F. B. M. |
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Title |
Coalitions as part of reciprocal relations in the Arnhem chimpanzee colony |
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Book Chapter |
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Year |
1992 |
Publication |
Coalitions and Alliances in Humans and Other Animals |
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233-257 |
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Oxford University Press |
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Oxford |
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Harcourt, A.H.; de Waal, F.B.M. |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4877 |
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Author |
Ehardt, C.L.; Bernstein, I.S. |
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Title |
Conflict intervention behaviour by adult male macaques: structural and functional aspects |
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Book Chapter |
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Year |
1992 |
Publication |
Coalitions and Alliances in Humans and Other Animals |
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Pages |
83-111 |
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Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H.; de Waal, F.B.M. |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4926 |
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Author |
Zabel, C. J.; Glickman, S. E.; Frank, L. G.; Woodmansee, K. B.; Keppel, G. |
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Title |
Coalition formation in a colony of prepubertal spotted hyaenas |
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Book Chapter |
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Year |
1992 |
Publication |
Coalitions and Alliances in Humans and Other Animals |
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Pages |
113–135 |
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Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H.; de Waal, F.B.M. |
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Equine Behaviour @ team @ |
Serial |
5232 |
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Author |
Connor, R. C.; Smokler, R. A.; Richards, A. F. |
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Title |
Dolphin alliances and coalitions |
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Book Chapter |
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Year |
1992 |
Publication |
Coalitions and Alliances in Humans and Other Animals |
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415-443 |
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Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H.;de Waal, F.B.M. |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5238 |
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Author |
Silk, J. B. |
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Title |
Patterns of intervention in agonistic contests among male bonnet macaques |
Type |
Book Chapter |
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Year |
1992 |
Publication |
Coalitions and Alliances in Humans and Other Animals |
Abbreviated Journal |
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Volume |
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Pages |
215-232 |
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Publisher |
Oxford University Press |
Place of Publication |
Oxford |
Editor |
Harcourt, A.H., and de Waal, F.B.M. |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5234 |
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