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Author |
Cowell, P.E.; Fitch, R.H.; Denenberg, V.H. |
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Title |
Laterality in animals: relevance to schizophrenia |
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Journal Article |
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Year |
1999 |
Publication |
Schizophrenia Bulletin |
Abbreviated Journal |
Schizophr Bull |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
25 |
Issue |
1 |
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41-62 |
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Keywords |
Adult; Animals; Cognition; *Disease Models, Animal; Functional Laterality/*physiology; Humans; Language; Motor Activity/physiology; Schizophrenia/*physiopathology |
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Abstract |
Anomalies in the laterality of numerous neurocognitive dimensions associated with schizophrenia have been documented, but their role in the etiology and early development of the disorder remain unclear. In the study of normative neurobehavioral organization, animal models have shed much light on the mechanisms underlying and the factors affecting adult patterns of both functional and structural asymmetry. Nonhuman species have more recently been used to investigate the environmental, genetic, and neuroendocrine factors associated with developmental language disorders in humans. We propose that the animal models used to study the basis of lateralization in normative development and language disorders such as dyslexia could be modified to investigate lateralized phenomena in schizophrenia. |
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Dept. of Human Communication Sciences, University of Sheffield, United Kingdom |
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0586-7614 |
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PMID:10098913 |
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no |
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Equine Behaviour @ team @ |
Serial |
2827 |
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Author |
Carlstead, K.; Brown, J.L. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Relationships between patterns of Fecal corticoid excretion and behavior, reproduction, and environmental factors in captive black (Diceros bicornis) and white (Ceratotherium simum) rhinoceros |
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Journal Article |
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Year |
2005 |
Publication |
Zoo Biology |
Abbreviated Journal |
Zoo Biol. |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
24 |
Issue |
3 |
Pages |
215-232 |
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Keywords |
stress; adrenal activity; olfactory behavior; ovarian activity; reproduction; mortality |
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Abstract |
Mortality is high in zoo-housed black rhinoceros (Diceros bicornis), and the reproductive rates of captive white rhinoceros (Ceratotherium simum) are unsustainably low. To determine the possible role of stress in the causation of these problems, we analyzed weekly fecal samples collected for 1 year from black (10 males and 16 females) and white (six males and 13 females) rhinoceroses at 16 zoos for corticoid metabolite concentrations. Fecal corticoid profiles were examined in relation to behavior as rated by keepers in a questionnaire, luteal phase ovarian cycles of females (Brown et al., 2001), and socioenvironmental factors. We compared individual fecal corticoid profiles by examining hormone means and variability (i.e., standard deviation (SD) and coefficient of variation (CV)). For the black rhinos, higher mean corticoid concentrations were found at zoos where rhinos were maintained in enclosures that were exposed to the public around a greater portion of the perimeter. Higher variability in corticoid excretion was correlated with higher rates of fighting between breeding partners and higher institutional mortality rates. Black rhino pairs that were kept separated exhibited lower corticoid variability and less fighting activity when they were introduced during female estrous periods compared to pairs that were kept together every day. For white rhinos, significantly lower mean corticoids were found for individuals that rated higher on “friendliness to keeper.” Higher corticoid variability was found in noncycling as compared to cycling white rhino females. Noncycling females exhibited higher rates of stereotypic pacing and lower frequencies of olfactory behaviors. Interindividual differences in mean corticoids in both species appeared to be related to responsiveness to humans, whereas corticoid variability was related to intraspecific social relationships. More importantly, high corticoid variability appeared to be an indicator of chronic or “bad” stress, because of its association with potentially deleterious consequences in each species (i.e., fighting and mortality (black rhino), and reproductive acyclicity (white rhino)). Our results provide evidence that social stressors may cause chronic stress in black and white rhinos, and that this contributes to the captive-population sustainability problems observed in each species. Zoo Biol 0:1–18, 2005. © 2005 Wiley-Liss, Inc. |
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Wiley Subscription Services, Inc., A Wiley Company |
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1098-2361 |
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Equine Behaviour @ team @ |
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6142 |
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Author |
Schultheiss, O.C.; Riebel, K.; Jones, N.M. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Activity inhibition: A predictor of lateralized brain function during stress? |
Type |
Journal Article |
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Year |
2009 |
Publication |
Neuropsychology |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
23 |
Issue |
3 |
Pages |
392-404 |
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Keywords |
activity inhibition; laterality; stress; content analysis; self-regulation; mood states; affective stimuli; perceptual laterality; motor laterality |
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Abstract |
The authors tested the hypothesis that activity inhibition (AI), a measure of the frequency of the word “not” in written material, marks a propensity to engage functions of the right hemisphere (RH) and disengage functions of the left hemisphere (LH), particularly during stress. Study 1 and Study 2 showed that high AI predicts faster detection of stimuli presented to the RH, relative to the LH. Study 2 provided evidence that the AI-laterality effect is specific to perceptual, but not motor, laterality and that it is particularly strong in individuals with low mood, but absent in individuals in a positive mood state. Study 3 showed that negative affective stimuli prime the AI-laterality effect more strongly than positive affective stimuli. Findings from Study 4 suggest that situationally induced frustration (losing a contest), in conjunction with high AI, leads to increased attentional laterality. The present findings substantially bolster the construct validity of AI and contribute to a better understanding of earlier findings linking AI to physiological stress responses, immune system functioning, alcohol abuse, and nonverbal behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
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Address |
Schultheiss, Oliver C.: Institute of Psychology, Friedrich-Alexander University, Kochstrasse 4, Erlangen, Germany, 91054, oliver.schultheiss@psy.phil.uni-erlangen.de |
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US: American Psychological Association |
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1931-1559 (Electronic); 0894-4105 (Print) |
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Call Number |
Equine Behaviour @ team @ 2009-05986-011 |
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5382 |
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Author |
Shaw, E.B.; Houpt, K.A.; Holmes, D.F. |
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Title |
Body temperature and behaviour of mares during the last two weeks of pregnancy |
Type |
Journal Article |
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Year |
1988 |
Publication |
Equine veterinary journal |
Abbreviated Journal |
Equine Vet J |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
20 |
Issue |
3 |
Pages |
199-202 |
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Keywords |
Animals; *Behavior, Animal; *Body Temperature; Circadian Rhythm; Eating; Female; Horses/*physiology; Labor, Obstetric/*physiology; Motor Activity; Pregnancy; Pregnancy, Animal/*physiology |
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Abstract |
Average daily core body temperature and behavioural patterns of pregnant mares were studied, in search of definitive signs of parturition within 24 h of the event. Nineteen pony mares were sampled twice daily for core body temperature. A significant temperature drop, averaging 0.1 degrees C (0.2 degrees F) was observed during the day prior to parturition. Between 18.00 h and 06.00 h, during the two weeks before parturition, Thoroughbred and Standardbred mares (n = 52) spent an average 66.8 per cent of their time standing, 27.0 per cent eating, 4.9 per cent lying in sternal recumbency, 1.0 per cent lying in lateral recumbency, and 0.3 per cent walking. On the night before parturition, mares spent significantly less time lying in sternal recumbency than on previous nights and on the night of parturition all behaviour patterns except eating were significantly different from the nights of the two weeks before parturition. There was an increase in walking (5.3 per cent), lying in sternal recumbency (8 per cent) and lying in lateral recumbency (5.3 per cent) whereas standing (53.3 per cent) was decreased. In 58 observed pregnancies, 54 mares (97 per cent) foaled in a recumbent position and 50 mares (86 per cent) foaled between 18.00 h and 06.00 h. |
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Address |
Department of Physiology, New York State College of Veterinary Medicine, Cornell University, Ithaca 14853 |
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ISSN |
0425-1644 |
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Notes |
PMID:3402416 |
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no |
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Call Number |
refbase @ user @ |
Serial |
46 |
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Author |
Zentall, S.S.; Zentall, T.R. |
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Title |
Hyperactivity ratings: statistical regression provides an insufficient explanation of practice effects |
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Journal Article |
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Year |
1986 |
Publication |
Journal of pediatric psychology |
Abbreviated Journal |
J Pediatr Psychol |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
11 |
Issue |
3 |
Pages |
393-396 |
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Keywords |
Attention Deficit Disorder with Hyperactivity/*diagnosis; Child; Humans; Male; *Practice (Psychology); *Statistics |
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English |
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ISSN |
0146-8693 |
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Notes |
PMID:3772683 |
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no |
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Call Number |
refbase @ user @ |
Serial |
261 |
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Permanent link to this record |
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Author |
Wallace, D.G.; Hamilton, D.A.; Whishaw, I.Q. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Movement characteristics support a role for dead reckoning in organizing exploratory behavior |
Type |
Journal Article |
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Year |
2006 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
9 |
Issue |
3 |
Pages |
219-228 |
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Keywords |
Animals; *Association Learning; *Exploratory Behavior; Female; *Motor Activity; *Orientation; Problem Solving; Rats; Rats, Long-Evans; Space Perception; *Spatial Behavior |
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Abstract |
Rat exploration is an organized series of trips. Each exploratory trip involves an outward tour from the refuge followed by a return to the refuge. A tour consists of a sequence of progressions with variable direction and speed concatenated by stops, whereas the return consists of a single direct progression. We have argued that processing self-movement information generated on the tour allows a rat to plot the return to the refuge. This claim has been supported by observing consistent differences between tour and return segments independent of ambient cue availability; however, this distinction was based on differences in movement characteristics derived from multiple progressions and stops on the tour and the single progression on the return. The present study examines movement characteristics of the tour and return progressions under novel-dark and light conditions. Three novel characteristics of progressions were identified: (1) linear speeds and path curvature of exploratory trips are negatively correlated, (2) tour progression maximum linear speed and temporal pacing varies as a function of travel distance, and (3) return progression movement characteristics are qualitatively different from tour progressions of comparable length. These observations support a role for dead reckoning in organizing exploratory behavior. |
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Address |
Psychology Department, Northern Illinois University, DeKalb, IL 60115-2892, USA. dwallace@niu.edu |
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ISSN |
1435-9448 |
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Notes |
PMID:16767471 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2463 |
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Permanent link to this record |
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Author |
Nielsen, M.; Collier-Baker, E.; Davis, J.M.; Suddendorf, T. |
![find record details (via OpenURL) openurl](img/xref.gif)
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Title |
Imitation recognition in a captive chimpanzee (Pan troglodytes) |
Type |
Journal Article |
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Year |
2005 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
8 |
Issue |
1 |
Pages |
31-36 |
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Keywords |
Animals; *Awareness; Humans; *Imitative Behavior; Male; Motor Activity; *Movement; Pan troglodytes/*psychology; *Recognition (Psychology) |
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Abstract |
This study investigated the ability of a captive chimpanzee (Pan troglodytes) to recognise when he is being imitated. In the experimental condition of test 1a, an experimenter imitated the postures and behaviours of the chimpanzee as they were being displayed. In three control conditions the same experimenter exhibited (1) actions that were contingent on, but different from, the actions of the chimpanzee, (2) actions that were not contingent on, and different from, the actions of the chimpanzee, or (3) no action at all. The chimpanzee showed more “testing” sequences (i.e., systematically varying his actions while oriented to the imitating experimenter) and more repetitive behaviour when he was being imitated, than when he was not. This finding was replicated 4 months later in test 1b. When the experimenter repeated the same actions she displayed in the experimental condition of test 1a back to the chimpanzee in test 2, these actions now did not elicit those same testing sequences or repetitive behaviours. However, a live imitation condition did. Together these results provide the first evidence of imitation recognition in a nonhuman animal. |
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Address |
Early Cognitive Development Unit, School of Psychology, University of Queensland, QLD, Brisbane, 4072, Australia. nielsen@psy.uq.edu.au |
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English |
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ISSN |
1435-9448 |
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Notes |
PMID:15322942 |
Approved |
no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
2515 |
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Permanent link to this record |
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Author |
Hoffmann, G.; Bentke, A.; Rose-Meierhöfer, S.; Berg, W.; Mazetti, P.; Hardarson, G.H. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Influence of an active stable system on the behavior and body condition of Icelandic horses |
Type |
Journal Article |
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Year |
2012 |
Publication |
animal |
Abbreviated Journal |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
6 |
Issue |
10 |
Pages |
1684-1693 |
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Keywords |
activity, automatic feeding system, behavior, body condition score, Icelandic horse |
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Abstract |
Horses are often stabled in individual boxes, a method that does not meet their natural needs and may cause psychical and
musculoskeletal diseases. This problem is particularly evident in Iceland, where horses often spend the long winter periods in cramped
boxes. The aim of this study was to analyze the suitability of a group housing system in Iceland, but the results are also applicable to
horses of other regions. Eight Icelandic horses were observed in an active stable system, and their behavior and time budget were
recorded. Movement and lying behavior were studied with ALT (Activity, Lying, Temperature detection) pedometers. The effect of an
automatic concentrate feeding station (CFS) on the horses’ behavior was examined. In the first period of investigation, the horses
were fed concentrates manually, and in the second period, they were fed with the CFS. Additional behavioral observations and a
determination of social hierarchy occurred directly or by video surveillance. The physical condition of the horses was recorded by body
weight (BW) measurement and body condition scoring (BCS). The results showed a significant increase between the first and second
trial periods in both the activity (P,0.001) and the lying time (P50.003) of the horses with use of the CFS. However, there was no
significant change in BW during the first period without the CFS (P50.884) or during the second period with the CFS (P50.540).
The BCS of the horses was constant at a very good level during both trial periods, and the horses showed a low level of aggression, a
firm social hierarchy and behavioral synchronization. This study concludes that group housing according to the active stable principle is
a welfare-friendly option for keeping horses and is a suitable alternative to conventional individual boxes. |
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Cambridge Journals Online |
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Edition |
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ISSN |
1751-732x |
ISBN |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
5759 |
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Permanent link to this record |
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Author |
Tobin, T.; Combie, J.D. |
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Title |
Performance testing in horses: a review of the role of simple behavioral models in the design of performance experiments |
Type |
Journal Article |
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Year |
1982 |
Publication |
Journal of Veterinary Pharmacology and Therapeutics |
Abbreviated Journal |
J Vet Pharmacol Ther |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
5 |
Issue |
2 |
Pages |
105-118 |
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Keywords |
Analgesics, Opioid/pharmacology; Animals; Apomorphine/pharmacology; Behavior, Animal/*drug effects; Dose-Response Relationship, Drug; Fentanyl/pharmacology; Horses/*physiology; Methylphenidate/pharmacology; *Models, Biological; Motor Activity/drug effects |
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English |
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Edition |
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ISSN |
0140-7783 |
ISBN |
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Notes |
PMID:6125601 |
Approved |
no |
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Call Number |
refbase @ user @ |
Serial |
1957 |
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Permanent link to this record |
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Author |
Chaplin, S.J.; Gretgrix, L. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Effect of housing conditions on activity and lying behaviour of horses |
Type |
Journal Article |
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Year |
2010 |
Publication |
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Abbreviated Journal |
animal |
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Volume ![sorted by Volume (numeric) field, descending order (down)](img/sort_desc.gif) |
4 |
Issue |
5 |
Pages |
792-795 |
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Keywords |
lying, behaviour, activity, equine, housing |
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Abstract |
Housing conditions for horses impose various levels of confinement, which may compromise welfare. Lying behaviour and activity can be used as welfare indicators for domestic animals and rebound behaviour suggests a build-up of motivation resulting from deprivation. The objective of this study was to determine if activity and lying behaviour of horses are affected by housing conditions and to investigate the occurrence of rebound behaviour after release from confinement. Eight horses were subjected, in pairs, to each of four experimental treatments; paddock (P), fully stabled (FS), partly stabled (PS) and yard (Y). Each horse received 6 days acclimatisation prior to the 24 h recording period. Time spent in lying and activity were electronically recorded using a tilt switch and motion sensor connected to a data logger worn on the horse's left foreleg. Time spent active during the first 5 min of release from stable to paddock in the PS treatment (days 1 and 5) and at the same time of day in the P treatment was used as a measure of rebound behaviour. Effect of housing conditions on total time spent active was highly significant (FS = 123 s, PS = 158 s, Y = 377 s, P = 779 s, P < 0.001). Housing conditions did not significantly affect total time spent lying (P = 0.646). Horses were significantly more active, compared with baseline paddock behaviour, on release from stabling on both days 1 (P = 0.006) and 5 (P = 0.025) of PS treatment. These results suggest that activity patterns of horses, but not lying behaviour, are affected by the housing conditions tested and that rebound activity occurs in horses after a period of confinement. |
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Cambridge University Press |
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Series Editor |
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Series Issue |
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Edition |
2010/01/21 |
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ISSN |
1751-7311 |
ISBN |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
6603 |
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Permanent link to this record |