Records |
Author |
Krueger, K.; Marr, I.; Farmer, K. |
Title |
Equine Cognition |
Type |
Book Chapter |
Year |
2017 |
Publication |
Encyclopedia of Animal Cognition and Behavior |
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Pages |
1-11 |
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Springer International Publishing |
Place of Publication |
Cham |
Editor |
Vonk, J.; Shackelford, T. |
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ISBN |
978-3-319-47829-6 |
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Equine Behaviour @ team @ Krueger2017 |
Serial |
6181 |
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Author |
Krueger, K. |
Title |
“Pferdehaltung und Ethologie der Pferde” im Bachelorstudiengang Pferdewirtschaft |
Type |
Book Chapter |
Year |
2014 |
Publication |
Forschendes Lernen initiieren, umsetzen und reflektieren |
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Pages |
54-81 |
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UniversitätsVerlag Webler |
Place of Publication |
Bielefeld |
Editor |
: S. Lepp und C. Niederdrenk-Felgner |
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10: 3-937026-91-6 |
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no |
Call Number |
Equine Behaviour @ team @ |
Serial |
5944 |
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Author |
Schanz, L.; Krueger, K.; Hintze, S. |
Title |
Sex and Age Don't Matter, but Breed Type Does--Factors Influencing Eye Wrinkle Expression in Horses |
Type |
Journal Article |
Year |
2019 |
Publication |
Frontiers in Veterinary Science |
Abbreviated Journal |
Front. Vet. Sci. |
Volume |
6 |
Issue |
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Pages |
154 |
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Abstract |
Identifying valid indicators to assess animals' emotional states is a critical objective of animal welfare science. In horses, eye wrinkles above the eyeball have been shown to be affected by pain and other emotional states. From other species we know that individual characteristics, e.g. age in humans, affect facial wrinkles, but it has not yet been investigated whether eye wrinkle expression in horses is systematically affected by such characteristics. Therefore, the aim of this study was to assess how age, sex, breed type, body condition and coat colour affect the expression and/or the assessment of eye wrinkles in horses. To this end, we adapted the eye wrinkle assessment scale from Hintze et al. (2016) and assessed eye wrinkle expression in pictures taken from the left and the right eye of 181 horses in a presumably neutral situation, using five outcome measures: a qualitative first impression reflecting how worried the horse is perceived by humans, the extent to which the brow is raised, the number of wrinkles, their markedness and the angle between a line through both corners of the eye and the topmost wrinkle. All measures could be assessed highly reliable with respect to intra- and inter-observer agreement. Breed type affected the width of the angle (F2, 114 = 8.20, p < 0.001), with thoroughbreds having the narrowest angle (M = 23.80, SD = 1.60), followed by warmbloods (M = 28.00, SD = 0.60), and coldbloods (M = 31.00, SD = 0.90). None of the other characteristics affected any of the outcome measures, and eye wrinkle expression did not differ between the left and the right eye area (all p-values > 0.05). In conclusion, horses' eye wrinkle expression and its assessment in neutral situations was not systematically affected by the investigated characteristics, except for 'breed type', which accounted for some variation in 'angle'; how much eye wrinkle expression is affected by emotion or perhaps mood needs further investigation and validation. |
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2297-1769 |
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no |
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Equine Behaviour @ team @ |
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6578 |
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Author |
Krueger, K. . |
Title |
Soziales Lernen der Pferde |
Type |
Book Chapter |
Year |
2011 |
Publication |
Göttinger Pferdetage '11: Zucht, Haltung und Ernährung von Sportpferden |
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Pages |
51 |
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FN Verlag |
Place of Publication |
Warendorf |
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978-3885427582 |
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no |
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Equine Behaviour @ team @ |
Serial |
5719 |
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Author |
Fuchs, K.; Götz, K.; Manschel, K.; Pohl, L.; Preisendanz, L.; Weil, S.; Weiß, V.; Wittum, J.; Krueger, K. |
Title |
Vergleich der Interaktionen von Pferden in Boxenhaltung mit Weidegang und Pferden in Offenstallhaltung |
Type |
Conference Article |
Year |
2013 |
Publication |
Göttinger Pferdetage’13 |
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Issue |
13 |
Pages |
65 |
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978-3-88542-782-7 |
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no |
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Equine Behaviour @ team @ |
Serial |
5948 |
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Author |
Ruess, M.; Schmelz, A.; Krueger, K. |
Title |
Einfluss vitomechanischer Schwingungen auf das Muskuloskeletalsystem der Pferde |
Type |
Conference Article |
Year |
2013 |
Publication |
Göttinger Pferdetage’13 |
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Volume |
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Issue |
13 |
Pages |
111 |
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978-3-88542-782-7 |
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Equine Behaviour @ team @ |
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5949 |
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Author |
Krueger, K. |
Title |
Social cognition and social learning in horses |
Type |
Conference Article |
Year |
2008 |
Publication |
IESM 2008 |
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Abstract |
In comparison to other social animals it appears to be far more difficult to show social learning in horses, although the social background of the animals prompts the prediction that social learning should be verifiable. This demands for a thorough analysis of conditions, context and effects of social learning which might not be as obvious in horses than in other social animals. Moreover, the horse“s social cognition in general, i.e. the processing, encoding, storage, retrieval, and application of social information, needs to be examined. In previous studies we addressed the horse”s perception of it“s social environment. Our results indicate that domestic horses are not only capable of distinguishing between familiar and unfamiliar horses but also of recognizing the social status of familiar horses relative to their own. Furthermore, they extract information from observing interactions between a familiar horse and a human experimenter, and adjust their behaviour according to the observed horse”s reaction and relative dominance status when they are themselves later confronted with the experimenter in a similar situation. Additionally, we showed in pilot experiments that horses paid more attention to the gaze of dominant horses from their own social group than to that of unknown or subordinate horses. In another study we suggested that horses of both sexes are capable of determining the social affiliation, the sex and, for their own group members, the identity of individuals, by sniffing their faeces. Hence, social affiliation and dominance relationships seemed to have a major influence on the horses` motivation to pay attention to their conspecifics. In the future we will take another step towards linking the horse“s social cognitive capacities with its social ecology, social structure, and individuality. In the context of comparative cognition research on the socially complex primates, or on a range of carnivores such as corvids, canids or dolphins, horses are particularly interesting, because they are highly social, but do not rely on social hunting or cooperative raising of offspring. Also foraging is simple for horses, predator avoidance is demanding and this may be the main reason for the horse”s complex social lives and their choice of learning tactics. Hence, we will investigate the horse"s investigative behaviour towards neutral, fear-eliciting and food related novel objects. We propose that, as in other species, sociality and distinct personalities are key features for the understanding of cognitive capacities and the choice of learning strategies. |
Address |
University of Regensburg – Biology I |
Corporate Author |
Krueger, K. |
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IESM 2008 |
Notes |
Talk 15 min IESM 2008 |
Approved |
yes |
Call Number |
Equine Behaviour @ team @ |
Serial |
4462 |
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Author |
Flauger, B.; Krueger, K. |
Title |
Ecology and evolution of equine cognitive abilities |
Type |
Conference Article |
Year |
2008 |
Publication |
IESM 2008 |
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Abstract |
The cognitive abilities of social ungulates, in particular horses, have widely been neglected. Preliminary results suggest that horses are capable of social cognition which they acquire through social learning. They gain information from the observation of the interaction of a conspecific and a human experimenter, and adjust their own behaviour towards the experimenter with respect to the observed horse"s reaction and relative dominance status (Krueger and Heinze, 2007). Horses are a highly social species that still exists in different evolutionary stages: domestic horses, feral horses and wild horses (Przewalski horses). Additionally, domestic and wild horses differ in their individual social behaviour. For example, in social interactions Przewalski horses appear to act significantly more aggressively than domestic horses. Therefore studies on horses are particularly suitable to investigate whether convergent social evolution favours convergent cognitive evolution. By a comparative study concerning their reasoning abilities in a specific situation, we will attempt to determine the influence of domestication and feralisation on the evolution of social cognition and to investigate possible differences in their abilities to cope with stressful situations. We started to observe the behaviour of domestic and wild horses, in particular during the integration into new social groups, especially in relation with their knowledge of the social structure of new groups and their own relative social status. Selected agonistic interactions will be measured and statistically evaluated. Additionally, the stress level of the horses will be determined by an analysis of stress hormone levels, particularly cortisol metabolites, in plasma, saliva and faeces. |
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Corporate Author |
Flauger, B. |
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IESM 2008 |
Notes |
Poster IESM 2008 |
Approved |
yes |
Call Number |
Equine Behaviour @ team @ |
Serial |
4500 |
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Author |
Krueger, K. (ed) |
Title |
Proceedings of the International Equine Science Meeting 2008 |
Type |
Conference Volume |
Year |
2008 |
Publication |
IESM 2008 |
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Keywords |
Equine Ecology; Equine Sociality; Equine Learning; Equine Cognition; Equine Welfare |
Abstract |
Target group: Biologists, Psychologists, Veterinarians and Professionals
Meeting target: Because the last international meeting on Equine Science took place a couple years ago, there is an urgent need for equine scientists to exchange scientific knowledge, coordinate research provide knowledge for practical application, and discus research results among themselves and with professionals who work with horses. Additionally, dialog concerning the coordination of the study “Equitation Science” in Europe is urgently needed. Coordination and cooperation shall arise from the meeting, enrich the research, and advance the application of scientific knowledge for the horses` welfare. |
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Publisher |
Xenophon Verlag |
Place of Publication |
Wald |
Editor |
Krueger, K. |
Language |
English |
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978-3-9808134-0-2 |
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Equine Behaviour @ team @ |
Serial |
4508 |
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Author |
Krueger, K. (ed) |
Title |
Proceedings of the 2. International Equine Science Meeting |
Type |
Book Whole |
Year |
2012 |
Publication |
IESM 2012 |
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Xenophon Publishing |
Place of Publication |
Wald |
Editor |
Krueger, K. |
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Equine Behaviour @ team @ |
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6008 |
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