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Author |
Denoix, J.M. |
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Title |
Approche mecanique des allures et du saut chez le cheval |
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Journal Article |
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Year |
1991 |
Publication |
Science & Sports |
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Volume |
6 |
Issue |
2 |
Pages |
117-124 |
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Keywords |
cheval; locomotion; biomecanique; horse; locomotion; biomechanics |
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Abstract |
Resume La locomotion du cheval implique des contraintes mecaniques elevees sur les os, les articulations, les muscles et les tendons. Son etude permet de mieux connaitre les interventions actives ou passives de ces organes au cours des allures et du saut. Ces elements sont utiles pour la mise en oeuvre rationnelle d'exercices d'entrainement chez le cheval de sport ou de courses, en fonction des exigences de la discipline et des eventuels problemes locomoteurs du sujet. L'etude mecanique de la locomotion du cheval est par ailleurs indispensable pour l'amelioration de la connaissance des boiteries. Elle permet de preciser la genese des lesions osteoarticulaires et musculo-tendineuses et contribue a ameliorer leur traitement.Summary Locomotion of the horse is correlated with a great variety of mechanical stresses on bones, joints, muscles and tendons. Research on locomotion increases the knowledge of passive and active interventions of these structures during gaits and jump. These data are useful to manage the training of sport and jump horses, especially to fit with the particularities of the sport speciality and individual locomotor problems of horses. Beside, studies of locomotion in the horse are of importance to improve the knowledge of lamenesses. They contribute to precise the pathogenesis of osteoarticular and musculotendinous injuries and improve their treatment. |
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refbase @ user @ |
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3976 |
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Author |
Falewee, C.; Gaultier, E.; Lafont, C.; Bougrat, L.; Pageat, P. |
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Title |
Effect of a synthetic equine maternal pheromone during a controlled fear-eliciting situation |
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Journal Article |
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Year |
2006 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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Volume |
101 |
Issue |
1-2 |
Pages |
144-153 |
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Keywords |
Horses; Behaviour; Fear; Pheromone; Heart rate; Performance |
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Abstract |
Horses are known to show fear reactions when confronted with novelty and this can be a considerable hindrance in the context of working situations such as riding, dressage or racing. The aim of the present study was to measure the potential effects of a synthetic analogue of the Equine Appeasing Pheromone on saddled horses when subjected to a stressful situation using a double-blinded, placebo controlled study design. A group of 40 horses was analyzed during this study and horses were divided by sex, breed and reactivity into two homogenized groups. The test, which consisted of walking the horse through a fringed curtain, was selected from a range of tests which are used to assess behaviour for the selection of French breeding stock. Horses that could have been subjected to the test on a previous occasion, and therefore be familiar with it, were not included. Behavioural and physiological parameters were both taken into account with measures of time to go through the curtain, fear related typical behavioural patterns, based on available literature detailed in the bibliography, and heart rate being recorded. Parameters were analyzed by means of Mann-Whitney U-test. Significant differences were noticed between the two groups concerning heart rate data during the test (UMeanHR = 100.5, pMeanHR = 0.02; UMaxHR = 75, pMaxHR = 0.001) and during the whole measured period (UMeanHR = 67, pMeanHR = 0.005; UMaxHR = 58, pMaxHR = 0.002). Observation of the animals also revealed less behavioural items characteristic of fear within the treated group. As a result, horses performed the test with a better time performance when they received the pheromone analogue (U = 62, p = 0.002). The main parameter, area under the HR graph, is based on heart rate measure and performance. Differences noticed (U = 74, p = 0.002) for this parameter lead to the conclusion that horses who received EAP underwent less stress related consequences in terms of their cardiac physiology. As horses are subjected to a number of foreseeable stressful events this study suggests that the use of Equine Appeasing Pheromone could be a significant factor in improving the welfare of this species. |
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refbase @ user @ |
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3992 |
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Author |
Allen, D.; Tanner, K. |
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Title |
Putting the horse back in front of the cart: using visions and decisions about high-quality learning experiences to drive course design |
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Journal Article |
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Year |
2007 |
Publication |
CBE Life Sciences Education |
Abbreviated Journal |
CBE Life Sci Educ |
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Volume |
6 |
Issue |
2 |
Pages |
85-89 |
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Keywords |
Curriculum/*standards; *Decision Making; *Learning; Models, Educational; Schools; Teaching/*methods/*standards |
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Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA. deallen@udel.edu |
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1931-7913 |
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PMID:17548870 |
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Call Number |
Equine Behaviour @ team @ |
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3999 |
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Author |
Bouchet, A. |
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Title |
[Anatomy lessons on animals] |
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Journal Article |
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Year |
2006 |
Publication |
Histoire des Sciences Medicales |
Abbreviated Journal |
Hist Sci Med |
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Volume |
40 |
Issue |
4 |
Pages |
331-338 |
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Keywords |
Anatomy/education/*history; Animals; Dissection/history; Education, Medical/history; Education, Veterinary/*history; France; History, 16th Century; History, 17th Century; History, 18th Century; History, 19th Century; History, 20th Century; Humans; Schools, Veterinary/history |
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The first anatomical studies were realized on the animal by Galen and Vesalius. Bourgelat created the first veterinarian school in Lyons, then in Paris where the famous dissection of a man on his horse can be seen (Fragonard). The Lafosse dynasty was interested in the study of the horse care and the painter Sollier showed the most beautiful coloured engravings about the horses. A chair of anatomy was created to compare the human and animal anatomy by the school of Jardin des Plantes en 1855. |
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French |
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Les lecons d'anatomie sur les animaux |
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0440-8888 |
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PMID:17526401 |
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no |
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Call Number |
Equine Behaviour @ team @ |
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4000 |
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Author |
Baudry, L.; Leroy, D.; Chollet, D. |
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Title |
The effect of combined self- and expert-modelling on the performance of the double leg circle on the pommel horse |
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Year |
2006 |
Publication |
Journal of Sports Sciences |
Abbreviated Journal |
J Sports Sci |
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Volume |
24 |
Issue |
10 |
Pages |
1055-1063 |
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Keywords |
Adolescent; Analysis of Variance; Child; *Expert Testimony; Feedback; Gymnastics/*physiology; Humans; *Leg/physiology; Movement/physiology; Physical Education and Training; Posture/physiology; Range of Motion, Articular/physiology; Retention (Psychology); *Video Recording |
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In this study, we investigated whether video modelling can enhance gymnasts' performance of the circle on a pommel horse. The procedure associated expert-modelling with self-modelling and quantitative performance analysis. Sixteen gymnasts were randomly assigned to one of two groups: (1) a modelling group, which received expert- and self-modelling, and performance feedback, or (2) a control group, which received no feedback. After five sessions of training, an analysis of variance with repeated measures indicated that the gains in the back, entry, front, and exit phases of the circle were greater for the modelling group than for the control group. During the training sessions, the gymnasts in the modelling group improved their body segmental alignment during the back phase more quickly than during the other phases. As predicted, although both groups performed the same number of circles (300 in 5 days, with 10 sequences of 6 circles), the modelling group improved their body segmental alignment more than the control group. It thus appears that immediate video modelling can help to correct complex sports movements such as the circle performed on the pommel horse. However, its effectiveness seemed to be dependent on the complexity of the phase. |
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CETAPS Laboratory, UPRES EA 3832, Faculty of Sports Sciences, Rouen University, Mont-Saint Aignan, France. ludovic_baudry@yahoo.fr |
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0264-0414 |
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PMID:17115520 |
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no |
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Call Number |
Equine Behaviour @ team @ |
Serial |
4026 |
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Author |
Arlettaz, R.; Patthey, P.; Baltic, M.; Leu, T.; Schaub, M.; Palme, R.; Jenni-Eiermann, S. |
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Title |
Spreading free-riding snow sports represent a novel serious threat for wildlife |
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Journal Article |
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Year |
2007 |
Publication |
Proceedings. Biological Sciences / The Royal Society |
Abbreviated Journal |
Proc Biol Sci |
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Volume |
274 |
Issue |
1614 |
Pages |
1219-1224 |
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Abstract |
Stress generated by humans on wildlife by continuous development of outdoor recreational activities is of increasing concern for biodiversity conservation. Human disturbance often adds to other negative impact factors affecting the dynamics of vulnerable populations. It is not known to which extent the rapidly spreading free-riding snow sports actually elicit detrimental stress (allostatic overload) upon wildlife, nor what the potential associated fitness and survival costs are. Using a non-invasive technique, we evaluated the physiological stress response induced by free-riding snow sports on a declining bird species of Alpine ecosystems. The results of a field experiment in which radiomonitored black grouse (Tetrao tetrix) were actively flushed from their snow burrows once a day during four consecutive days showed an increase in the concentration of faecal stress hormone (corticosterone) metabolites after disturbance. A large-scale comparative analysis across the southwestern Swiss Alps indicated that birds had higher levels of these metabolites in human-disturbed versus undisturbed habitats. Disturbance by snow sport free-riders appears to elevate stress, which potentially represents a new serious threat for wildlife. The fitness and survival costs of allostatic adjustments have yet to be estimated. |
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Zoological Institute, Division of Conservation Biology, University of Bern, Baltzerstrasse 6, 3012 Bern, Switzerland. raphael.arlettaz@nat.unibe.ch |
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ISSN |
0962-8452 |
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PMID:17341459 |
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no |
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Equine Behaviour @ team @ |
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4075 |
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Author |
Thiel, D.; Jenni-Eiermann, S.; Palme, R. |
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Title |
Measuring corticosterone metabolites in droppings of capercaillies (Tetrao urogallus) |
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Journal Article |
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Year |
2005 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1046 |
Issue |
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Pages |
96-108 |
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Keywords |
Adrenocorticotropic Hormone/administration & dosage/analysis/metabolism; Animals; Circadian Rhythm; Corticosterone/administration & dosage/*analysis/*metabolism; Feces/*chemistry; Female; Freezing; Galliformes/*metabolism; Male; Reproducibility of Results; Sex Factors; Temperature; Time Factors; Tritium/diagnostic use |
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Abstract |
The capercaillie (Tetrao urogallus), the largest grouse species in the world, is decreasing in numbers in major parts of its distribution range. Disturbances by human outdoor activities are discussed as a possible reason for this population decline. An indicator for disturbances is the increase of the glucocorticoid corticosterone, a stress hormone, which helps to cope with life-threatening situations. However, repeated disturbances might result in a long-term increase of the basal corticosterone concentration, which can result in detrimental effects like reduced fitness and survival of an animal. To measure corticosterone metabolites (CMs) noninvasively in the droppings of free-living capercaillies, first an enzyme immunoassay (EIA) in captive birds had to be selected and validated. Therefore, the excretion pattern of intravenously injected radiolabeled corticosterone was determined and 3H metabolites were characterized. High-performance liquid chromatography (HPLC) separations of the samples containing peak concentrations revealed that corticosterone was extensively metabolized. The HPLC fractions were tested in several EIAs for glucocorticoid metabolites. The physiological relevance of this method was proved after pharmacological stimulation of the adrenocortical activity. Only the recently established cortisone assay, measuring CMs with a 3,11-dione structure, detected an expressed increase of concentrations following ACTH stimulation. To set up a sampling protocol suited for the field, we examined the influence of various storage conditions and time of day on concentrations of CMs. |
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Swiss Ornithological Institute, 6204 Sempach, Switzerland. dominik.thiel@vogelwarte.ch |
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English |
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ISSN |
0077-8923 |
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PMID:16055846 |
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Equine Behaviour @ team @ |
Serial |
4079 |
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Author |
Baltic, M.; Jenni-Eiermann, S.; Arlettaz, R.; Palme, R. |
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Title |
A noninvasive technique to evaluate human-generated stress in the black grouse |
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Journal Article |
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Year |
2005 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1046 |
Issue |
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Pages |
81-95 |
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Keywords |
Adrenocorticotropic Hormone/metabolism; Animals; Bird Diseases/*metabolism; Conservation of Natural Resources; Corticosterone/*metabolism; Ecosystem; Feces/*chemistry; Female; Galliformes/*metabolism; Immunoenzyme Techniques/methods/veterinary; Male; Reproducibility of Results; Stress/metabolism/*veterinary; Tritium/diagnostic use |
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The continuous development of tourism and related leisure activities is exerting an increasingly intense pressure on wildlife. In this study, a novel noninvasive method for measuring stress in the black grouse, an endangered, emblematic species of European ecosystems that is currently declining in several parts of its European range, is tested and physiologically validated. A radiometabolism study and an ACTH challenge test were performed on four captive black grouse (two of each sex) in order to get basic information about the metabolism and excretion of corticosterone and to find an appropriate enzyme-immunoassay (EIA) to measure its metabolites in the feces. Peak radioactivity in the droppings was detected within 1 to 2 hours. Injected (3)H-corticosterone was excreted as polar metabolites and by itself was almost absent. A cortisone-EIA was chosen from among seven tested EIAs for different groups of glucocorticoid metabolites, because it cross-reacted with some of the formed metabolites and best reflected the increase of excreted corticosterone metabolites, after the ACTH challenge test. Concentrations of the metabolites from fecal samples collected from snow burrows of free-ranging black grouse were within the same range as in captive birds. The noninvasive method described may be appropriate for evaluating the stress faced by free-living black grouse populations in the wild, particularly in mountain ecosystems where human disturbance, especially by winter sports, is of increasing conservation concern. |
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Zoological Institute, Division of Conservation Biology, Baltzerstrasse 6, CH-3012 Bern, Switzerland |
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0077-8923 |
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PMID:16055845 |
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Equine Behaviour @ team @ |
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4080 |
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Author |
Mostl, E.; Rettenbacher, S.; Palme, R. |
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Title |
Measurement of corticosterone metabolites in birds' droppings: an analytical approach |
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Journal Article |
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Year |
2005 |
Publication |
Annals of the New York Academy of Sciences |
Abbreviated Journal |
Ann N Y Acad Sci |
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Volume |
1046 |
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Pages |
17-34 |
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Animals; Birds/*metabolism; Corticosterone/*analysis/metabolism; Feces/*chemistry; Gas Chromatography-Mass Spectrometry; Immunoassay; Molecular Structure; Reproducibility of Results; Sensitivity and Specificity |
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Abstract |
Fecal steroid analyses are becoming increasingly popular among both field and laboratory scientists. The benefits associated with sampling procedures that do not require restraint, anesthesia, and blood collection include less risk to subject and investigator, as well as the potential to obtain endocrine profiles that are not influenced by the sampling procedure itself. In the feces, a species-specific pattern of metabolites is present, because glucocorticoids are extensively metabolized. Therefore, selection of adequate extraction procedures and immunoassays for measuring the relevant metabolites is a serious issue. In this review, emphasis is placed on the establishment and analytical validation of methods to measure glucocorticoid metabolites for a noninvasive evaluation of adrenocortical activity in droppings of birds. |
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Institute of Biochemistry, Department of Natural Sciences, University of Veterinary Medicine, Vienna, Veterinarplatz 1, A-1210 Vienna, Austria. erich.moestl@vu-wien.ac.at |
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0077-8923 |
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PMID:16055841 |
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Equine Behaviour @ team @ |
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4082 |
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Author |
Straub, A. |
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Title |
An intelligent crow beats a lab |
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Journal Article |
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2007 |
Publication |
Science (New York, N.Y.) |
Abbreviated Journal |
Science |
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Volume |
316 |
Issue |
5825 |
Pages |
688 |
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Animals; *Behavior, Animal; *Cognition; *Crows; Dogs; Intelligence; Memory |
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1095-9203 |
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PMID:17478698 |
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Equine Behaviour @ team @ |
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4102 |
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