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| Author | Feh, C. | ||||
| Title | Relationships and Communication in Socially Natural Horse Herds | Type | Book Chapter | ||
| Year | 2005 | Publication | The domestic horse : the origins, development, and management of its behaviour | Abbreviated Journal | The domestic horse : the origins, development, and management of its behaviour |
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| Abstract | Horses are quite unique. In most mammals, sexes segregate and maintain bonds only during the breeding season (Clutton-Brock, 1989). Some canids, a few rodents and primate species such as gorillas, hamadryas baboons and red howler monkeys are the exception, where the same males stay with the same females all year round and over many breeding seasons. Typically, both sexes disperse at puberty in these species. In horses, it was clearly shown that the causes for female dispersal were incest avoidance and not intra-specific competition (Monard, 1996). As a rule, this is confirmed for mammal species where tenure length by males exceeds the age at first reproduction in females (Clutton-Brock, 1989). When horses are allowed to choose their mating partner freely, the inbreeding coefficient of the offspring is lower than expected should they mate randomly (Duncan et al, 1984). | ||||
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| Publisher | Cambridge University Press 2005 | Place of Publication | Cambridge | Editor | Mills, D. S. ; McDonnell, , S. M. |
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| ISSN | ISBN | 13 978-0-521-81414-6 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @; Equine Behaviour @ team @ room B 3.092 | Serial | 472 | ||
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| Author | Nathan J. Emery | ||||
| Title | The Evolution of Social Cognition | Type | Book Chapter | ||
| Year | 2005 | Publication | The Cognitive Neuroscience of Social BehaviourGarten | Abbreviated Journal | |
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| Abstract | Although this bookis focusedon the cognitive neuroscience ofhuman social behaviour, an understandingofsocial cognition in non-human animals is critical for unravellingthe neural basis of social cognition in humans as well as the selective pressures that have shapedthe evolution ofcomplex social cognition. Thanks to methodological limitations, we know little about the relationships between certain biochemical andelectrophysiological properties ofthe human brain andhow theycompute the behaviour andmental states ofother individuals. Traditional techniques for examiningneural function in humans, such as event-relatedpotentials (ERP),positron emission tomography(PET),and functional magnetic resonance imaging(fMRI),are constrainedbythe fact that subjects are placed either into an immoveable scanner with a lot ofbackgroundnoise or wiredup with dozens of electrodes that are sensitive to slight movements. The possibilityofscanningor recordingbrain waves from two individuals that are physicallyinteractingsociallyis technicallyimpossible at present (however, see Montague et al, 2002 for a new methodfor simultaneouslyscanningtwo individuals interactingvia a computer). The onlywayto understandthe neurocognitive architecture ofhuman social behaviour is to examine similar social processes in both human andnon-human animal minds andmake comparisons at the species level. An additional argument is that traditional human socio-cognitive tasks are dependent on the use ofstories, cartoons andverbal cues andinstructions (Heberlein & Adolphs, this volume)which themselves will elicit specific neural responses that have to be eliminatedfrom neural responses specificallyrelatedto mindreading. Therefore, the development ofnon-verbal tasks wouldprovide a breakthrough for studies in non-linguistic animals, pre-verbal human infants andhuman cognitive neuroimaging. |
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| Publisher | Psychology Press | Place of Publication | Editor | ||
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| Notes | Approved | no | |||
| Call Number | refbase @ user @ | Serial | 543 | ||
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| Author | Merkies, K.; McKechnie, M.J.; Zakrajsek, E. | ||||
| Title | Behavioural and physiological responses of therapy horses to mentally traumatized humans | Type | Journal Article | ||
| Year | 2018 | Publication | Applied Animal Behaviour Science | Abbreviated Journal | |
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| Keywords | Equine-assisted therapy; Ptsd; Horse; Behaviour; Cortisol; Heart rate | ||||
| Abstract | The benefits to humans of equine-assisted therapy (EAT) have been well-researched, however few studies have analyzed the effects on the horse. Understanding how differing mental states of humans affect the behaviour and response of the horse can assist in providing optimal outcomes for both horse and human. Four humans clinically diagnosed and under care of a psychotherapist for Post-Traumatic Stress Disorder (PTSD) were matched physically to four neurotypical control humans and individually subjected to each of 17 therapy horses loose in a round pen. A professional acting coach instructed the control humans in replicating the physical movements of their paired PTSD individual. Both horses and humans were equipped with a heart rate (HR) monitor recording HR every 5secs. Saliva samples were collected from each horse 30 min before and 30 min after each trial to analyze cortisol concentrations. Each trial consisted of 5 min of baseline observation of the horse alone in the round pen after which the human entered the round pen for 2 min, followed by an additional 5 min of the horse alone. Behavioural observations indicative of stress in the horse (gait, head height, ear orientation, body orientation, distance from the human, latency of approach to the human, vocalizations, and chewing) were retrospectively collected from video recordings of each trial and analyzed using a repeated measures GLIMMIX with Tukey's multiple comparisons for differences between treatments and time periods. Horses moved slower (p < 0.0001), carried their head lower (p < 0.0001), vocalized less (p < 0.0001), and chewed less (p < 0.0001) when any human was present with them in the round pen. Horse HR increased in the presence of the PTSD humans, even after the PTSD human left the pen (p < 0.0001). Since two of the PTSD/control human pairs were experienced with horses and two were not, a post-hoc analysis showed that horses approached quicker (p < 0.016) and stood closer (p < 0.0082) to humans who were experienced with horses. Horse HR was lower when with inexperienced humans (p < 0.0001) whereas inexperienced human HR was higher (p < 0.0001). Horse salivary cortisol did not differ between exposure to PTSD and control humans (p > 0.32). Overall, behavioural and physiological responses of horses to humans are more pronounced based on human experience with horses than whether the human is diagnosed with a mental disorder. This may be a reflection of a directness of movement associated with humans who are experienced with horses that makes the horse more attentive. It appears that horses respond more to physical cues from the human rather than emotional cues. This knowledge is important in tailoring therapy programs and justifying horse responses when interacting with a patient in a therapy setting. | ||||
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| ISSN | 0168-1591 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 6385 | ||
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| Author | Giraldeau, Luc-Alain | ||||
| Title | The ecology of information use | Type | Book Chapter | ||
| Year | 1997 | Publication | Behavioural ecology : an evolutionary approach | Abbreviated Journal | |
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| Publisher | Blackwell Science | Place of Publication | Cambridge, Mass. | Editor | Krebs, J.R.; Davies, N.B. |
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| ISSN | ISBN | 0865427313 9780865427310 | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ 35114973 | Serial | 4277 | ||
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| Author | Lieberman, D. | ||||
| Title | Type | Book Whole | |||
| Year | 1993 | Publication | Learning, Behaviour and Cognition, 2nd Ed. | Abbreviated Journal | |
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| Notes | Cited By (since 1996): 8; Export Date: 21 October 2008 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4525 | ||
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| Author | Mills, D.S.; Nankervis, K.J. | ||||
| Title | Type | Book Whole | |||
| Year | 1999 | Publication | Equine Behaviour: Principles and Practice | Abbreviated Journal | |
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| Notes | Cited By (since 1996): 26; Export Date: 21 October 2008 | Approved | no | ||
| Call Number | Equine Behaviour @ team @ | Serial | 4533 | ||
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| Author | Smith, L.A.; Wells, K.L.; Marion, G.; Swain, D.L.; Hutchings, M.R. | ||||
| Title | Effects of group composition on the grazing behaviour of herbivores | Type | Journal Article | ||
| Year | Publication | Animal Behaviour. | Abbreviated Journal | Anim. Behav. | |
| Volume | In Press, Corrected Proof | Issue | Pages |
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| Keywords | grazing; group composition; herbivore; individual behaviour; physiological state | ||||
| Abstract | Animal behaviour is often a function of the animal's physiological state. Groups of animals will often contain individuals with a range of physiological states and the grazing behaviour of herbivores is affected by their physiological state. This study compared the grazing decisions of animals in groups of single and mixed physiological states. Using a grazing model that simulated individual herbivore behaviour in relation to environmental distributions of forage resource (grass) and parasites (faeces), we tested the hypothesis that an animal's level of parasite exposure via the faecal-oral route is affected by the composition of physiological states in the group. Four physiological states were considered: parasite-naïve, parasitized, lactating and parasite-immune animals. Baseline parasite exposure levels for each state were generated by simulating single-state groups and were compared to simulations of each of the six two-state combinations. In single-state groups parasitized animals had the least and lactating animals had the greatest levels of parasite exposure. When co-grazing with lactating animals, parasitized, immune and naïve animals increased their parasite exposure, relative to single-state groups. When co-grazing with parasitized animals, lactating, immune and naïve animals reduced their parasite exposure, relative to single-state groups. There was no difference in parasite exposure of the immune or naïve animals co-grazing together when compared to the single-state groups. These results highlight the need to recognize the impact of the individual when studying group-living animals. | ||||
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| ISSN | 0003-3472 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5155 | ||
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| Author | Bergvall, U.A.; Schäpers, A.; Kjellander, P.; Weiss, A. | ||||
| Title | Personality and foraging decisions in fallow deer, Dama dama | Type | Journal Article | ||
| Year | Publication | Animal Behaviour. | Abbreviated Journal | Anim. Behav. | |
| Volume | In Press, Corrected Proof | Issue | Pages |
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| Keywords | antipredator behaviour; boldness; Dama dama; dominance; fallow deer; foraging; novelty; personality | ||||
| Abstract | Recent studies have examined the ecological and evolutionary bases for variation in animal personality. However, only a few such studies have examined how foraging parameters are influenced by different personality domains. In wild ungulates, the trade-off between the time spent on food intake and antipredator behaviour differs between individuals, but the underlying reason for this is not yet well understood. One possibility is that this trade-off reflects personality dimensions such as boldness. To relate foraging decisions to personality we measured personality and performed feeding experiments with familiar and novel food in familiar and novel situations. We measured personality traits in 15 tame fallow deer, using novel object tests (NO), behavioural observations (BO) and personality ratings (PR). Boldness dimensions were found using PR and NO, dominance dimensions were found using BO and PR, and a flexibility dimension was found using BO. Multitrait-multimethod analysis showed that similar dimensions were significantly correlated across different methods and that different dimensions were not significantly correlated, even if measured using the same method. We also found that novel food eaten in familiar situations and familiar food eaten in novel situations were strongly related to boldness but not dominance, flexibility or age. Thus the trade-off between the benefits of gaining more food and the costs of reduced vigilance or increased toxin ingestion reflect boldness. These findings highlight the nature of personality dimensions in ungulates and how boldness impacts foraging behaviour. | ||||
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| ISSN | 0003-3472 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5278 | ||
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| Author | Søndergaard, E.; Jensen, M.B.; Nicol, C.J. | ||||
| Title | Motivation for social contact in horses measured by operant conditioning | Type | Journal Article | ||
| Year | Publication | Applied Animal Behaviour Science | Abbreviated Journal | Appl. Anim. Behav. Sci. | |
| Volume | In Press, Corrected Proof | Issue | Pages |
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| Keywords | Horse; Housing; Social behaviour; Operant conditioning; Motivation | ||||
| Abstract | Although horses are social animals they are often housed individually with limited social contact to other horses and this may compromise their welfare. The present study included eight young female horses and investigated the strength of motivation for access to full social contact, head contact and muzzle contact, respectively, to a familiar companion horse. Horses were housed individually next to their companion horse and separations between pens prevented physical contact. During daily test sessions horses were brought to a test area where they could access an arena allowing social contact. Arena access during 3 min was given after completion of a predetermined number of responses on a panel. Fixed ratios (FR) of 8, 16, 24, 32 and 40 responses per arena access were applied in a random order, one per daily test session, within each test week (Monday to Friday), and the number of rewards per daily test session was recorded. All horses could access all three types of social contact in a cross-over design, and an empty arena was used as control. Motivational strength was assessed using elasticity of demand functions, which were estimated based on the number of rewards earned and FR. Elasticities of demand for the three types of social contact were low (-0.20), and not significantly different, although increasing FR still resulted in a decrease in rewards obtained for all three types of social contact (P < 0.001). Across FR-levels horses earned more rewards for social contact than for an empty arena, as shown by much higher intercept values (2.51 vs. 0.99; P < 0.001). However, the elasticity of demand for infrequent access to an empty arena (-0.08) was lower than for social contact (P < 0.01) and not significantly different from zero (P = 0.07). Horses performed more social behaviour the lesser the restriction on social contact (full > head > muzzle). However, the finding that horses showed a similar and high motivation for all three types of social contact suggests that they are valued equally highly in a situation where the alternative is no social contact. | ||||
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| ISSN | 0168-1591 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5388 | ||
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| Author | Siniscalchi, M.; Sasso, R.; Pepe, A.M.; Dimatteo, S.; Vallortigara, G.; Quaranta, A. | ||||
| Title | Sniffing with the right nostril: lateralization of response to odour stimuli by dogs | Type | Journal Article | ||
| Year | Publication | Animal Behaviour | Abbreviated Journal | Anim. Behav. | |
| Volume | In Press, Corrected Proof | Issue | Pages |
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| Keywords | animal welfare; Canis familiaris; dog; emotion; laterality olfaction; physiology | ||||
| Abstract | Lateralization in dogs, Canis familiaris, has been reported for paw usage and response to visual and acoustic stimuli. Surprisingly, however, no investigation of possible lateralization for the most relevant sensory domain of dogs, namely olfaction, has been carried out. Here we investigated left and right nostril use in dogs freely sniffing different emotive stimuli in unrestrained conditions. When sniffing novel nonaversive stimuli (food, lemon, vaginal secretion and cotton swab odours), dogs showed initial preferential use of the right nostril and then a shift towards use of the left nostril with repeated stimulus presentation. When sniffing arousal stimuli such as adrenaline and veterinary sweat odorants, dogs showed a consistent right nostril bias all over the series of stimulus presentations. Results suggest initial involvement of the right hemisphere in processing of novel stimuli followed by the left hemisphere taking charge of control of routine behaviour. Sustained right nostril response to arousal stimuli appears to be consistent with the idea that the sympathetic hypothalamic-pituitary-adrenal axis is mainly under the control of the right hemisphere. The implications of these findings for animal welfare are discussed. | ||||
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| ISSN | 0003-3472 | ISBN | Medium | ||
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| Notes | Approved | no | |||
| Call Number | Equine Behaviour @ team @ | Serial | 5394 | ||
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