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Winkler A, |
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Title |
The feeding ecology of the Cape Mountain zebra in the Mountain Zebra National Park |
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1992 |
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Doctoral thesis |
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from Professor Hans Klingels Equine Reference List |
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yes |
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1713 |
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Author |
Winkelmayr, B.; Peham, C.; Fruhwirth, B.; Licka, T.; Scheidl, M. |
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Evaluation of the force acting on the back of the horse with an English saddle and a side saddle at walk, trot and canter |
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Journal Article |
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Year |
2006 |
Publication |
Equine Veterinary Journal. Supplement |
Abbreviated Journal |
Equine Vet J Suppl |
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36 |
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406-410 |
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Animals; Back/*physiology; Back Pain/etiology/veterinary; Biomechanics; Exercise Test/veterinary; Female; Gait/physiology; Horse Diseases/etiology; Horses/*physiology; Humans; Locomotion/physiology; Male; Movement/*physiology; *Physical Conditioning, Animal/instrumentation/methods/physiology; *Pressure; Weight-Bearing/*physiology |
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Abstract |
REASONS FOR PERFORMING STUDY: Force transmission under an English saddle (ES) at walk, trot and canter is commonly evaluated, but the influence of a side saddle (SS) on the equine back has not been documented. HYPOTHESIS: Force transmission under a SS, with its asymmetric construction, is different from an ES in walk, trot and canter, expressed in maximum overall force (MOF), force in the quarters of the saddle mat, and centre of pressure (COP). The biomechanics of the equine back are different under a SS compared to ES. METHODS: Thirteen horses without clinical signs of back pain ridden in an indoor riding school with both saddles were measured using an electronic saddle sensor pad. Synchronous kinematic measurements were carried out with tracing markers placed along the back in front of (withers, W) and behind the saddle (4th lumbar vertebra, L4). At least 6 motion cycles at walk, trot and canter with both saddles (ES, SS) were measured. Out of the pressure distribution the maximum overall force (MOF) and the location of the centre of pressure (COP) were calculated. RESULTS: Under the SS the centre of pressure was located to the right of the median and slightly caudal compared to the COP under the ES in all gaits. The MOF was significantly different (P<0.01) between saddles. At walk, L4 showed significantly larger (P<0.01) vertical excursions under the ES. Under the SS relative horizontal movement of W was significantly reduced (P<0.01) at trot, and at canter the transversal movement was significantly reduced (P<0.01) . In both trot and canter, no significant differences in the movement of L4 were documented. CONCLUSIONS AND POTENTIAL RELEVANCE: The results demonstrate that the load under a SS creates asymmetric force transmission under the saddle, and also influences back movement. To change the load distribution on the back of horses with potential back pain and as a training variation, a combination of both riding styles is suitable. |
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Department V, Clinic of Orthopaedics in Ungulates, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria |
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English |
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PMID:17402456 |
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Equine Behaviour @ team @ |
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4007 |
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Wingfield, J. C.,; Ramenofsky, M. |
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Hormones and the behavioral ecology of stress. |
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1999 |
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Stress physiology in animals. |
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1-51 |
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Sheffield Academic Press |
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Sheffield, United Kingdom |
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Balm, P. H. M. |
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Equine Behaviour @ team @ |
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4071 |
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Windschnurer, I.; Zeitlinger, S.; Troxler, J.; Waiblinger, S. |
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Title |
Human and horse behaviour during veterinary treatments |
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Conference Article |
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2012 |
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Proceedings of the 2. International Equine Science Meeting |
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Proc. 2. Int. Equine. Sci. Mtg |
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in press |
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Veterinary treatments are often aversive or painful, resulting in stress, avoidance, or aggressive behaviour. This preliminary study investigated which behaviours horses and humans display during veterinary examinations or treatments and if specific behaviours are shown more often during particular situations . Moreover, possible links between human and equine behaviour were investigated. Behaviours of horses, veterinarians, and assisting people were recorded at 5 clinics during 49 routine treatments that were divided into 111 situations (assigned to 7 categories: giving injections, waiting, leading horses, inspections with light body contact, invasive inspections, leg inspections, spraying/shaving). Behaviours of humans present during a situation were summarised. Behaviours (frequencies/minute) were analysed by Kruskal-Wallis tests and Spearman rank correlations. Horses showed insecurity (stopping, baulking, defecation) with different frequencies in the different categories (Chi2=23.38, df=6, P=0.001), e.g., often during leading. In humans, activating behaviour (e.g., arm waving, whistling, tongue clicking) was displayed with different frequencies (Chi2=20.42, df=6, P=0.002), e.g., frequently during leading. Restlessness in horses (e.g., stepping, head movements) tended to occur with different frequencies (Chi2=12.37, df=6, P=0.054), e.g., often during invasive inspections. Humans applied restraining techniques considered to be painful (e.g., ear twisting) with different frequencies (Chi2=26.20, df=6, P<0.001), e.g., mostly during invasive inspections. Restlessness in horses correlated with negative human interactions (e.g., hitting, talking impatiently, shouting: rs=0.28, P=0.002, n=111) and neutral human interactions (e.g., slight hits, talking dominantly: rs=0.45, P<0.001, n=111) as well as with the use of painful restraint techniques (rs=0.46, P<0.001, n=111). Moreover, avoidance behaviour of the horses (turning and stepping away) correlated with negative human interactions (rs=0.30, P=0.002, n=111). Thus, humans and horses showed certain behaviours in different situations with differing frequencies. Moreover, links between human and animal behaviour were found. Future studies should analyse causal connections, i.e., if the observed animal behaviour is the result of/or the reason for human interactions by sequence analysis. KW - |
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Waiblinger, S. |
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Xenophon Publishing |
Place of Publication |
Wald |
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Krueger, K. |
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978-3-9808134-26 |
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no |
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Equine Behaviour @ team @ |
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5540 |
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Author |
Wimmer H; Perner J |
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Title |
Beliefs about beliefs: representation and constraining function of wrong beliefs in young children's understanding of deception |
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1983 |
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Cognition |
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13 |
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103 |
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no |
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Equine Behaviour @ team @ |
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3051 |
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Wimmer H; Hogrefe GJ; Perner J |
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Title |
Children's understanding of informational access as a source of knowledge |
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1988 |
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Child Dev. |
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59 |
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386 |
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Equine Behaviour @ team @ |
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3050 |
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Wiltschko, W.; Balda, R.P.; Jahnel, M.; Wiltschko, R. |
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Sun compass orientation in seed-caching corvids: its role in spatial memory |
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Journal Article |
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1999 |
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Animal Cognition |
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Anim. Cogn. |
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2 |
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4 |
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215-221 |
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The role of sun compass orientation in spatial memory of Clark's nutcrackers, Nucifraga columbiana, and pinyon jays, Gymnorhinus cyanocephalus, was studied in a series of cache recovery experiments. Birds were tested in an octagonal outdoor aviary with sand-filled cups inserted in the floor. For caching, only 12 such cups in a 90° sector were available, while for recovery 4-7 days later all 48 cups in the entire aviary were open. In control tests, the birds concentrated their search activity in the sector where they had cached. When their internal clock was shifted 6 h between caching and recovery, pinyon jays shifted their search activity to the 90° adjacent sector, as predicted if the sun compass was used. Clark's nutcrackers did not respond to the first clock-shift; however, they, too, shifted their search activity after a second clock-shift back to normal. This suggests that the sun compass is a component of spatial memory in both species. Clark's nutcrackers, however, seem to rely on their sun compass to a lesser degree than pinyon jays or the previously studied scrub jays. A comparison of the findings indicates that the role of the sun in spatial memory might reflect differences in habitat and ecology of the three corvid species. |
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Equine Behaviour @ team @ |
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3335 |
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Wilson, S. D.; Clark, A. B.; Coleman, K.; Dearstyne, T. |
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Shyness and boldness in humans and other animals |
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1994 |
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Trends in Ecology & Evolution |
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Trends. Ecol. Evol |
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9 |
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11 |
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442-446 |
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The shy-bold continuum is a fundamental axis of behavioral variation in humans and at least some other species, but its taxonomic distribution and evolutionary implications are unknown. Models of optimal risk, density- or frequency-dependent selection, and phenotypic plasticity can provide a theoretical framework for understanding shyness and boldness as a product of natural selection. We sketch this framework and review the few empirical studies of shyness and boldness in natural populations. The study of shyness and boldness adds an interesting new dimension to behavioral ecology by focusing on the nature of continuous behavioral variation that exists within the familiar categories of age, sex and size. |
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0169-5347 |
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Equine Behaviour @ team @ |
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5161 |
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Author |
Wilson, R.T. |
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Title |
Biodiversity of Domestic Livestock in the Republic of Yemen |
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Journal Article |
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2003 |
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Tropical Animal Health and Production |
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35 |
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1 |
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27-46 |
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Abstract This paper describes the domestic livestock of the Republic of Yemen and aspires to complement earlier sources listing or partially describing `breeds'. It attempts to cover all species and provide indications of production parameters through a literature review and via field observations made by the author in 1999. Information is provided on livestock numbers and the economic importance of animal production. Most animals are kept in sedentary mixed crop-livestock production systems; transhumant systems have the next greatest number of stock; with nomadic systems being of least and declining importance. Yemen's livestock appear to comprise at least 11 breeds of sheep, 5 breeds of goat, 2 breeds of cattle, 4 breeds of camel, 2 breeds of donkey and 1 breed of horse. There are no data on breeds of poultry but domestic fowl (where clearly considerable diversity exists) and pigeons are kept. There is little formal information on the history and relationships of most breeds. Some appear to be of ancient local origin, whereas others show affinities with those of neighbouring and other countries. None of the identified types is considered endangered, so conservation would be premature. A more formal and detailed genetic characterization, to add to the largely morphological and traditional classification, may, however, reveal such a need. |
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Abstract This paper describes the domestic livestock of the Republic of Yemen and aspires to complement earlier sources listing or partially describing `breeds'. It attempts to cover all species and provide indications of production parameters through a literature review and via field observations made by the author in 1999. Information is provided on livestock numbers and the economic importance of animal production. Most animals are kept in sedentary mixed crop-livestock production systems; transhumant systems have the next greatest number of stock; with nomadic systems being of least and declining importance. Yemen's livestock appear to comprise at least 11 breeds of sheep, 5 breeds of goat, 2 breeds of cattle, 4 breeds of camel, 2 breeds of donkey and 1 breed of horse. There are no data on breeds of poultry but domestic fowl (where clearly considerable diversity exists) and pigeons are kept. There is little formal information on the history and relationships of most breeds. Some appear to be of ancient local origin, whereas others show affinities with those of neighbouring and other countries. None of the identified types is considered endangered, so conservation would be premature. A more formal and detailed genetic characterization, to add to the largely morphological and traditional classification, may, however, reveal such a need. |
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Equine Behaviour @ team @ |
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4389 |
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Author |
Wilson, R. |
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Title |
Specific Welfare Problems Associated with Working Horses |
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2002 |
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The Welfare of Horses |
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203-218 |
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A brief review of the history and uses of workhorses is provided as well as numbers and distributions of working equines at the beginning of the twenty-first century. The problems of using the correct harness and correct alignment of horse and equipment through the harness are considered and care of the feet and especially the necessity of correct shoeing for both welfare and maximum work are discussed. The nutritional needs of working equines in terms of energy, protein, minerals and vitamins and the importance of good health and prevention and management of disease, are examined. Relationships between the animal and his owner or handler and some legal aspects of improving welfare are covered and it is concluded that education of these owners/handlers is essential for improving the welfare of working equids in developing countries. |
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Equine Behaviour @ team @ |
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4382 |
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