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Author Keeling, L.J.; Bøe, K.E.; Christensen, J.W.; Hyyppä, S.; Jansson, H.; Jørgensen, G.H.M.; Ladewig, J.; Mejdell, C.M.; Särkijärvi, S.; Søndergaard, E.; Hartmann, E.
Title Injury incidence, reactivity and ease of handling of horses kept in groups: a matched case control study in four Nordic countries Type Journal Article
Year Publication Applied Animal Behaviour Science Abbreviated Journal Appl Anim Behav Sci
Volume Issue Pages (up)
Keywords horse; behaviour; reactivity; injury; welfare; management
Abstract Abstract There is increasing interest in keeping horses in groups, but progress is hampered by a lack of knowledge about which horses can and should be kept together. Therefore, our objective was to investigate the effect of group composition on the occurrence of injuries among horses, the ease of removing horses from groups and horses’ reactivity to a fearful stimulus. Using a matched case control design, 61 groups of horses were studied in Denmark, Norway, Finland and Sweden. They were allocated into groups of similar or different age and sex or where membership changed regularly or remained stable. Injuries were recorded before mixing the horses into treatment groups, the day after mixing and four weeks later. Reactivity of horses to a moving novel object and the behaviour of a horse being removed from its group and the reactions of other group members towards this horse and the handler were evaluated. It was hypothesized that a more socially variable group composition has beneficial effects on behaviour, ease of handling and reducing reactivity whereas frequent changes in group composition has negative consequences, resulting in more injuries. We found that differences in treatment effects were mainly related to breed, rather than group composition. Icelandic horses reacted less to the movement of the novel object (P = 0.007) and approached it more afterwards (P = 0.04). They also had fewer new injuries than warmbloods following mixing (P < 0.001) and fewer than all other groups 4 weeks later (P < 0.01). Most new injuries after mixing were minor and recorded on the horse’s head, chest, hind legs and rump. In conclusion, variations in sex and age composition of the group had little effect on injury level, reactivity and ease of handling compared to the general effect of breed. Concerns about the risk of severe injuries associated with keeping horses in groups are probably overestimated. Thus, we propose that horses can be successfully kept in groups of different sex and age composition.
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ISSN 0168-1591 ISBN Medium
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Call Number Equine Behaviour @ team @ Serial 6020
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Author Marneweck, C.; Jürgens, A.; Shrader, A.M.
Title Dung odours signal sex, age, territorial and oestrous state in white rhinos Type Journal Article
Year 2017 Publication Proc Biol Sci Abbreviated Journal Proc. R. Soc. Lond. B
Volume 284 Issue 1846 Pages (up)
Keywords
Abstract Mammals commonly communicate olfactorily via urine. However, the extent to which they communicate via dung, another waste product, is unknown. Behavioural studies suggest that mammals can obtain information from dung odours but are unclear about the information transmitted. Moreover, an understanding of the volatile organic compounds (VOCs) released from dung is limited. To address this, we analysed the odours emitted from the dung of free-ranging white rhinos, and found that 2,3-dimethylundecane signalled an individual's sex, heptanal discriminated age class, nonane defined male territorial status and 2,6-dimethylundecane indicated female oestrous state. To validate these findings, we artificially reproduced key elements of the territorial and oestrous odour profiles (i.e. profiles likely to elicit behavioural responses from receivers). We then exposed free-ranging territorial males to these odours. In response, males elicited behaviours associated with the specific odours (e.g. territorial male (potential threat): reduced latency in assuming vigilance; oestrous female (potential mate): increased investigation). These results indicate that the VOCs identified from the dung of free-ranging individuals do transmit key information. Moreover, as white rhinos of all ages and sexes defecate communally, middens probably act as information centres. Furthermore, as many other mammals defecate communally, olfactory communication via dung odours is likely a widespread phenomenon.
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Call Number Equine Behaviour @ team @ Serial 6147
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Author Wynne C. D. L.
Title Animal Cognition: The Mental Lives of Animals Type Book Whole
Year 2001 Publication Abbreviated Journal
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Abstract Covering a wide range of key topics, from reasoning and communication to sensation and complex problem-solving, this engagingly-written text presents a comprehensive survey of contemporary research on animal cognition. Written for anyone with an interest in animal cognition, but without a background in animal behaviour, it endeavours to explain what makes animals tick.

With numerous illustrations and including exciting recent studies from many little-studied species (such as the weakly electric African fish), this text is ideal for psychology students who are interested in how much of our human cognition is shared by other species, for students of biology who want to know how complex animal behaviour can get, and for all those with an interest in the animal mind.
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Publisher Palgrave Place of Publication Editor
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ISSN ISBN 9780333923955 Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 6157
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Author Baragli, P.; Vitale, V.; Paoletti, E.; Mengoli, M.; Sighieri, C.
Title Encoding the Object Position for Assessment of Short Term Spatial Memory in Horses (Equus caballus) Type Journal Article
Year 2011 Publication International Journal of Comparative Psychology Abbreviated Journal
Volume 24 Issue 3 Pages (up)
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Abstract In this study, the detour problem was combined with the classic delayed-response task to investigate equine short-term spatial memory. Test subjects were eight female horses, divided into two groups (A and B) of four subjects each. The motivating object was made to move and disappear behind one oftwo identical obstacles in a two-point-choice apparatus. After a 10 s (Group A) or 30 s (Group B) delay the animal was released to seek the object. Both groups made more correct (14.8 ± 1.3 forGroup A and 13.5 ± 3.1 for Group B, mean ± SD) than incorrect choices (5.3 ± 1.3 for Group A and6.5 ± 3.1 for Group B, mean ± SD) and the performance of each group was significantly above chance level (z = 4.14,  p = 0.000, for Group A and z = 3.02, p = 0.002, for Group B). Therefore, tested animals were able to recover the object by approaching the correct obstacle after 10 s or 30 s delays, showing that they had encoded and recovered from memory the existence of the target object and its location.
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ISSN 2168-3344 ISBN Medium
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Call Number Equine Behaviour @ team @ Serial 6178
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Author Van Schaik, C.P.; Burkart, J.M.
Title Social learning and evolution: the cultural intelligence hypothesis Type Journal Article
Year 2011 Publication Philos Trans R Soc B Abbreviated Journal
Volume 366 Issue Pages (up)
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Call Number Equine Behaviour @ team @ Van Schaik2011 Serial 6227
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Author Heyes, C.
Title What's social about social learning? Type Journal Article
Year 2012 Publication J Comp Psychol Abbreviated Journal
Volume 120 Issue Pages (up)
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Call Number Equine Behaviour @ team @ Heyes2012 Serial 6228
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Author Kruska, D.C.T.
Title On the evolutionary significance of encephalization in some eutherian mammals: effects of adaptive radiation, domestication, and feralization Type Journal Article
Year 2005 Publication Brain Behav Evol Abbreviated Journal
Volume 65 Issue Pages (up)
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Call Number Equine Behaviour @ team @ Kruska2005 Serial 6235
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Author Smaers, J.B.; Dechmann, D.K.N.; Goswami, A.; Soligo, C.; Safi, K.
Title Comparative analyses of evolutionary rates reveal different pathways to encephalization in bats, carnivorans, and primates Type Journal Article
Year 2012 Publication Proc Natl Acad Sci U S A Abbreviated Journal
Volume 109 Issue Pages (up)
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Call Number Equine Behaviour @ team @ Smaers2012 Serial 6238
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Author Saunders, F.C.; McElligott, A.G.; Safi, K.; Hayden, T.J.
Title Mating tactics of male feral goats (Capra hircus): risks and benefits Type Journal Article
Year 2005 Publication Acta Ethol Abbreviated Journal
Volume 8 Issue Pages (up)
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Call Number Equine Behaviour @ team @ Saunders2005 Serial 6252
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Author Stanley, C.R.; Dunbar, R.I.M.
Title Consistent social structure and optimal clique size revealed by social network analysis of feral goats, Capra hircus Type Journal Article
Year 2013 Publication Anim Behav Abbreviated Journal
Volume 85 Issue Pages (up)
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Call Number Equine Behaviour @ team @ Stanley2013 Serial 6253
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