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Author |
Huebener, E. |
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Title |
Movements of Trunk and Back of the Horse from a Rider's View |
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Journal Article |
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Year |
2004 |
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Tierärztliche Umschau |
Abbreviated Journal |
Tierärztl. Umschau |
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6 |
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327 |
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walk – trot – canter – pain – damages |
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The trunk and back movements of the horse during locomotion determine seat position and leg aids of the rider, this is the basis for horse-oriented and cultivated, sensitive riding. In their tendency these movements could now be derived from the foot sequences of the basic paces. The realizations are verified by video. By translating these movements into diagrams, the author is making an attempt to present the current state of knowledge for non-riding scholars and academically oriented riders alike. The acceptance of the prepared riding knowledge would be improved if one could produce measured values of the horse's back and trunk movements. An appeal of a rider for relevant, scholarly research. |
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German |
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refbase @ user @ |
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437 |
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Author |
Huebener, E. |
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Title |
Die Bewegungen von Pferderumpf und -rücken aus der Sicht des Reiters |
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Journal Article |
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Year |
2004 |
Publication |
Tierärztliche Umschau |
Abbreviated Journal |
Tierärztl. Umschau |
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6 |
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327-334 |
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Schritt – Trab – Galopp – Schmerz – Schäden |
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Die Bewegungen von Rumpf und Rücken des Pferdes in der Fortbewegung bestimmen Sitz und Schenkelhilfen – Grundlagen pferdgerechten und kultivierten, feinfühligen Reitens. In ihrer Tendenz ließen sich diese Bewegungen jetzt aus den Fußfolgen der Grundgangarten ableiten. Die Erkenntnisse sind per Video verifiziert. Mit ihrer Übersetzung in Diagramme wurde versucht, den gegenwärtigen Wissensstand für nicht-reitende Wissenschaftler und denkende Reiter gleichermaßen verständlich darzustellen. Die Akzeptanz des aufbereiteten Wissens in der Reiterei würde verbessert, wenn man zu gemessenen Werten für die Bewegungen des Pferderückens und des Pferderumpfes käme. Plädoyer eines “Nur-Reiters” für einschlägige, universitäre Forschung. |
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420 |
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Author |
Murray, J.K.; Singer, E.R.; Morgan, K.L.; Proudman, C.J.; French, N.P. |
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Title |
Memory decay and performance-related information bias in the reporting of scores by event riders |
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Journal Article |
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Year |
2004 |
Publication |
Preventive Veterinary Medicine |
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63 |
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3-4 |
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173-182 |
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Keywords |
Reporting bias; Memory decay; Risk factors; Horse; Cross-country |
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We used data from a case-control study investigating risk factors for horse falls in the cross-country phase of eventing in Great Britain (GB) to examine evidence for memory decay and information bias. Responses to two questions obtained by telephone for 173 cases and 521 controls were examined for evidence of differential reporting according to the respondent's case-control status and performance in the dressage and cross-country phases of competitions. Information bias was found in the accuracy of reporting dressage penalty scores when analysed as a function of performance level (good/poor). Poor dressage performers were less likely to report accurate dressage scores than good performers. The accuracy of reporting dressage scores decreased as the time between the event and questionnaire completion increased, with no case-control interaction. Competitors who incurred cross-country jumping penalties at the event preceding the selected event reported their cross-country scores with less accuracy when compared with competitors who incurred no penalties. No information bias was found when the reporting of dressage and cross-country scores were analysed as a function of respondent category (case/control). |
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refbase @ user @ |
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3955 |
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Pinchbeck, G.L.; Clegg, P.D.; Proudman, C.J.; Stirk, A.; Morgan, K.L.; French, N.P. |
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Title |
Horse injuries and racing practices in National Hunt racehorses in the UK: the results of a prospective cohort study |
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Journal Article |
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Year |
2004 |
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The Veterinary Journal |
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167 |
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1 |
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45-52 |
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Racehorse; Horse; Injury; Cohort; National Hunt |
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A prospective cohort study was conducted on horses starting in hurdle and steeplechase races on six UK racecourses in 2000 and 2001. Trainers or carers were questioned on the horses' pre-race routine and observational data were collected in the stables and parade ring. Some practices were common to many starters, such as withholding food and water before racing whereas other practices, such as schooling frequency, were more variable. There was a total of 2879 starts and a total of 83 injuries or medical events (28.8/1000 starts). The commonest types of injury were tendon/suspensory injuries and lacerations/wounds. Multivariable logistic regression models were used to identify the relationship between predictor variables and the risk of injury. Risk of injury or medical event was associated with distance of the race and weight carried. The risk of injury, excluding medical events, was associated with the speed of the race and foot conformation. |
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Equine Behaviour @ team @ |
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3672 |
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Author |
Quaranta, A.; Siniscalchi, M.; Frate, A.; Vallortigara, G. |
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Title |
Paw preference in dogs: relations between lateralised behaviour and immunity |
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Journal Article |
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Year |
2004 |
Publication |
Behavioural Brain Research |
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153 |
Issue |
2 |
Pages |
521-525 |
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Paw preference; Lateralisation; Immunity; Dog |
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Paw use in a task consisting of the removal of a piece of adhesive paper from the snout was investigated in 80 mongrel and pure-bred domestic dogs (Canis familiaris). Population lateralisation was observed, but in opposite directions in the two sexes (animals were not desexed): males preferentially used their left paw, females their right paw. The relationship between immune function and paw preference was then investigated. Some immune parameters (total number of white blood cells including lymphocytes, granulocytes and monocytes; leukocyte formula; total proteins; γ-globulins) were investigated in a sample of left-pawed (n=6), right-pawed (n=6) and ambidextrous (n=6) dogs. The results showed that the percentage of lymphocytes was higher in left-pawed than in right-pawed and ambidextrous dogs, whereas granulocytes percentage was lower in left-pawed than in right-pawed and ambidextrous dogs. Moreover, total number of lymphocytes cells was higher in left-pawed than in right-pawed and ambidextrous dogs, whereas the number of γ-globulins was lower in left-pawed than in right-pawed and ambidextrous dogs. These findings represent the first evidence that brain asymmetry modulates immune responses in dogs. |
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0166-4328 |
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Equine Behaviour @ team @ |
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5783 |
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Author |
Bugnyar, T.; Kotrschal, K. |
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Title |
Leading a conspecific away from food in ravens ( Corvus corax)? |
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Journal Article |
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Year |
2004 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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7 |
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2 |
Pages |
69-76 |
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Misleading – Deception – Raven – Social foraging |
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Active misleading of conspecifics has been described as a social strategy mainly for primates. Here we report a raven leading a competitor away from food in a social foraging task. Four individuals had to search and compete for hidden food at color-marked clusters of artificial food caches. At the beginning of the experiment, a subordinate male found and exploited the majority of the food. As a result, the dominant male displaced him from the already opened boxes. The subordinate male then developed a pattern, when the loss of reward to the dominant got high, of moving to unrewarded clusters and opening boxes there. This diversion often led the dominant to approach those unrewarded clusters and the subordinate then had a head start for exploiting the rewarded boxes. Subsequently, however, the dominant male learned not to follow the subordinate to unrewarded clusters and eventually started searching for the reward himself. These interactions between the two males illustrate the ravens' potential for deceptively manipulating conspecifics. We discuss under which circumstances ravens might use this capacity. |
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2080 |
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Author |
Gardner, A., West, S. A. |
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Title |
Cooperation and Punishment, Especially in Humans |
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Journal Article |
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Year |
2004 |
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The American Naturalist |
Abbreviated Journal |
Americ. Natur. |
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164 |
Issue |
6 |
Pages |
753-764 |
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kin selection, neighbor-modulated fitness, repression of |
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Abstract |
Explaining altruistic cooperation is one of the greatest
challenges faced by sociologists, economists, and evolutionary biologists.
The problem is determining why an individual would carry
out a costly behavior that benefits another. Possible solutions to this
problem include kinship, repeated interactions, and policing. Another
solution that has recently received much attention is the threat
of punishment. However, punishing behavior is often costly for the
punisher, and so it is not immediately clear how costly punishment
could evolve. We use a direct (neighbor-modulated) fitness approach
to analyze when punishment is favored. This methodology reveals
that, contrary to previous suggestions, relatedness between interacting
individuals is not crucial to explaining cooperation through punishment.
In fact, increasing relatedness directly disfavors punishing
behavior. Instead, the crucial factor is a positive correlation between
the punishment strategy of an individual and the cooperation it
receives. This could arise in several ways, such as when facultative
adjustment of behavior leads individuals to cooperate more when
interacting with individuals who are more likely to punish. More
generally, our results provide a clear example of how the fundamental
factor driving the evolution of social traits is a correlation between
social partners and how this can arise for reasons other than genealogical
kinship. |
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University of Edinburgh, West Mains Road, Edinburgh EH9 3JT, |
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341 |
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Author |
Lefebvre, L.; Reader, S.M.; Sol, D. |
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Title |
Brains, Innovations and Evolution in Birds and Primates |
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2004 |
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Brain, Behavior and Evolution |
Abbreviated Journal |
Brain. Behav. Evol. |
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63 |
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4 |
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233-246 |
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Innovation W Brain evolution W Hyperstriatum ventrale W Neostriatum W Isocortex W Birds W Primates W Tool use W Invasion biology |
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Abstract
Several comparative research programs have focusedon the cognitive, life history and ecological traits thataccount for variation in brain size. We review one ofthese programs, a program that uses the reported frequencyof behavioral innovation as an operational measureof cognition. In both birds and primates, innovationrate is positively correlated with the relative size of associationareas in the brain, the hyperstriatum ventrale andneostriatum in birds and the isocortex and striatum inprimates. Innovation rate is also positively correlatedwith the taxonomic distribution of tool use, as well asinterspecific differences in learning. Some features ofcognition have thus evolved in a remarkably similar wayin primates and at least six phyletically-independent avianlineages. In birds, innovation rate is associated withthe ability of species to deal with seasonal changes in theenvironment and to establish themselves in new regions,and it also appears to be related to the rate atwhich lineages diversify. Innovation rate provides a usefultool to quantify inter-taxon differences in cognitionand to test classic hypotheses regarding the evolution ofthe brain. |
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0006-8977 |
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Equine Behaviour @ team @ |
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4738 |
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Author |
Waiblinger, S.; Menke, C.; Korff, J.; Bucher, A. |
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Previous handling and gentle interactions affect behaviour and heart rate of dairy cows during a veterinary procedure |
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Journal Article |
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2004 |
Publication |
Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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85 |
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1-2 |
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31-42 |
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Human-animal relationship; Cattle; Handling; Stress; Heart rate; Welfare |
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Veterinary and management procedures often are aversive to the animals, resulting in physiological and behavioural stress reactions, which increase the risk of accidents and might lower performance. We investigated the effects of previous positive handling and of gentle interactions during the procedure on behaviour and heart rate in dairy cows during rectal palpation with sham insemination. Twenty cows were allocated randomly into two groups of 10 animals: handling, received additional positive handling over a period of four weeks by one person (handler); control, only routine handling by different caretakers. The week after the handling period, tests lasting 9 min, including 4 min rectal palpation, were carried out with each animal on four successive days in four situations in a balanced order: cow is alone during the test, with the handler, with an usual caretaker, or with an unknown person. Behaviour and heart rate were recorded. Previously handled animals had lower heart rate during tests (P<=0.05, n=19), kicked less when alone (P<=0.05, n=19) and tended to show less restless behaviour (P<=0.1, n=19). Cows were further calmed by gentle interactions during the test, but people differed remarkably. Cows showed less restless behaviour when gentled by the handler, both in the 4 min of rectal palpation and in the 9 min test period (each: P<=0.001, n=19). No significant stress reducing effect was found for the other two persons. In conclusion, stress reactions of cows during rectal palpation/insemination can be reduced by previous positive handling as well as by a person providing positive, gentle interactions during the procedure. The results underline the importance of positive, gentle interactions with the animals to enhance animal welfare and reduce the risk of accidents. They also show that people differ in the success to calm down the animals in aversive situations and indicate the need to investigate the characteristics responsible for the differences and identify the preconditions for a stress reducing effect in future research. |
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Equine Behaviour @ team @ |
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4397 |
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Author |
Murphy, J.; Waldmann, T.; Arkins, S. |
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Sex differences in equine learning skills and visuo-spatial ability |
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2004 |
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Applied Animal Behaviour Science |
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Appl. Anim. Behav. Sci. |
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87 |
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1-2 |
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119-130 |
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Horses; Sex differences; Visuo-spatial ability; Learning |
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There is evidence of superior visuo-spatial ability in males compared to females in most species investigated to-date. However, no known studies have addressed this issue in the equine. Equine visuo-spatial ability was investigated using a novel test apparatus with a sample of 62 horses (males=34 and females=28) during a series of six tests, where the horses were required to access a food source. The test apparatus consisted of a series of four adjacent stalls, each of which had a feed bin and a moveable barrier. The test apparatus was designed such that the breastplate barriers controlled and limited access by the horses to feed bins in all but one stall during each test. Male horses performed such that there were significant differences (P<0.05) in the ability of the subjects to complete all six tests in a mean time of 30 s or less per test. There were significant differences in mean completion times for male subjects between test 1 and test 2 (P<0.05), test 1 and test 3 (P<0.001), test 1 and test 4 (P<0.05) and test 1 and test 5 (P<0.05). There were no significant differences in mean completion times between any of the six tests for female subjects. Males had a lower mean total number of errors during all tests. Male horses also successfully completed significantly more tests than females (P<0.05). These results provide the first behavioural demonstration of superior visuo-spatial ability in male horses, similar to that reported in other species. |
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Equine Behaviour @ team @ |
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