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Author |
Robins, A.; Phillips, C. |
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Title |
Lateralised visual processing in domestic cattle herds responding to novel and familiar stimuli |
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Journal Article |
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Year |
2009 |
Publication |
Laterality: Asymmetries of Body, Brain and Cognition |
Abbreviated Journal |
Laterality |
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15 |
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5 |
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514-534 |
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We investigated whether cattle exhibit preferences to monitor challenging and novel stimuli. Experiments were conducted on dairy and beef cattle herds and revealed significant left eye preferences in the cattle for viewing an experimenter walking to repeatedly split the herd through its centre. Visual lateralisation was demonstrated in the preference to use the left monocular field to monitor the experimenter, alone or equipped with a range of novel stimuli. This finding is consistent with left eye preferences found in various species of mammals, birds, and amphibians responding to predators and novel stimuli. A cohort of the familiarised cattle herds was then subjected to additional herd-splitting tests with the same stimuli and demonstrated a reversal of viewing preferences, preferring to monitor the experimenter and stimuli within the right and not left monocular field. This directional shift in viewing preferences is consistent with experience-dependent learning found in lateralised visual processing in other, non-mammalian, species, and to our knowledge is the first of such studies to suggest that such lateralised learning processes also exist in mammals. Together the data support a number of key hypotheses concerning the evolution and conservation of lateralised brain function in vertebrates, and also provide important considerations for livestock handling. |
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1357-650x |
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doi: 10.1080/13576500903049324 |
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Equine Behaviour @ team @ |
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5918 |
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Westergaard, G.C.; Suomi, S.J.; Higley, J.D. |
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Title |
Handedness is associated with immune functioning and behavioural reactivity in rhesus macaques |
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Journal Article |
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Year |
2002 |
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Laterality |
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Laterality |
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7 |
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4 |
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359-369 |
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In the present study we examined the relationship among handedness, immune functioning, and behavioural reactivity in rhesus macaques. We used the absolute number of CD4+ (T-helper) and CD8+ (T-suppressor) cells as dependent measures of immune functioning. We derived reactivity profiles from behavioural responses to a threat, and hand preference profiles from a quadrupedal food-reaching test. The results indicate positive correlations between the frequency of right versus left hand reaches and the absolute number of CD4+ cells, and between the frequency of right versus left hand reaches and the degree of human-directed aggression in response to an invasive threat. Immune measures were not associated with the strength of hand preference. These results are consistent with and extend previous findings obtained with rodents to nonhuman primates and provide further support for the view that behavioural lateralisation is associated with immune functioning and behavioural reactivity. |
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1357-650x |
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doi: 10.1080/13576500143000230 |
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Equine Behaviour @ team @ |
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5779 |
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Siniscalchi, M.; Cirone, F.; Guaricci, A.C.; Quaranta, A. |
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Title |
Catecholamine plasma levels, IFN-γ serum levels and antibodies production induced by rabies vaccine in dogs selected for their paw preference |
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Journal Article |
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2013 |
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Laterality: Asymmetries of Body, Brain and Cognition |
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Laterality: Asymmetries of Body, Brain and Cognition |
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19 |
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5 |
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522-532 |
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To explore the possible role of the sympathetic nervous activity in the asymmetrical crosstalk between the brain and immune system, catecholamine (E, NE) plasma levels, Interferon-? (IFN-?) serum levels and production of antibodies induced by rabies vaccine in dogs selected for their paw preference were measured. The results showed that the direction of behavioural lateralization influenced both epinephrine levels and immune response in dogs. A different kinetic of epinephrine levels after immunization was observed in left-pawed dogs compared to both right-pawed and ambidextrous dogs. The titers of antirabies antibodies were lower in left-pawed dogs than in right-pawed and ambidextrous dogs. Similarly, the IFN-? serum levels were lower in left-pawed dogs than in the other two groups. Taken together, these findings showed that the left-pawed group appeared to be consistently the different group stressing the fundamental role played by the sympathetic nervous system as a mechanistic basis for the crosstalk between the brain and the immune system. |
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1357-650x |
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doi: 10.1080/1357650X.2013.867971 |
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Equine Behaviour @ team @ |
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5829 |
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Author |
Yorke, J.; Adams, C.; Coady, N. |
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Title |
Therapeutic Value of Equine-Human Bonding in Recovery from Trauma |
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Journal Article |
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Year |
2008 |
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Anthrozoös |
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Anthrozoös |
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21 |
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1 |
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17-30 |
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ABSTRACTAlthough most human-animal bond research has focused on relationships between humans and pets, animals have been used for therapeutic purposes in a variety of settings. Therapeutic riding programs have demonstrated a positive impact on quality of life for people with disabilities. Equine-facilitated psychotherapy is a promising approach to address self-esteem, depression, and other emotional or psychological problems. Restoration of the trauma victim's capacity for recovery hinges on provision of safety and development of trust, self-esteem, and self-efficacy. Thus, recovery from trauma represents an ideal context for exploring the therapeutic impact of equine?human relationships. The six participants in this study recognized that their pre-existing relationships with horses were therapeutic during recovering from trauma, defined as sufficient to have caused significant change in the participant's life. Semi-structured interviews and video-tapes of horse?rider interaction were used to describe the nature of the equine?human bond and its contribution to recovery from trauma. The equine?human bonds described by participants have parallels both with important elements of therapeutic alliances between professionals and clients and with the positive impact of relationship factors on client outcome. |
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0892-7936 |
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doi: 10.2752/089279308X274038 |
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Equine Behaviour @ team @ |
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6033 |
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Author |
Yorke, J.; Nugent, W.; Strand, E.; Bolen, R.; New, J.; Davis, C. |
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Title |
Equine-assisted therapy and its impact on cortisol levels of children and horses: a pilot study and meta-analysis |
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Journal Article |
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Year |
2013 |
Publication |
Early Child Development and Care |
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Early Child Development and Care |
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Volume |
183 |
Issue |
7 |
Pages |
874-894 |
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Childhood trauma, abuse or neglect impacts the function and structure of the brain of affected children. Attunement with other beings as well as an enriched environment can contribute to normal brain development. The enriched environment of a barn and attunement with an animal may contribute to reductions in stress for traumatised children. A pilot study, using a multiple base line, single case design included four children with post-traumatic stress syndrome (aged eight to ten years) and four therapy riding horses. This study hypothesised that cortisol would correlate between each child?horse pair, using a 12-day intervention that included six consecutive days of riding and grooming. A meta-analysis was completed of correlation levels of four child?horse pairs The weighted mean cross-correlation, controlling for autocorrelation, was 0.23, Z?=?3.03, approximate 95% confidence interval 0.23?±?(1.96???0.076) or 0.08 to 0.38. The data suggest a need for further research. |
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0300-4430 |
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doi: 10.1080/03004430.2012.693486 |
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Equine Behaviour @ team @ |
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6034 |
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Sueur, C.; Deneubourg, J.-L.; Petit, O. |
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Title |
From Social Network (Centralized vs. Decentralized) to Collective Decision-Making (Unshared vs. Shared Consensus) |
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Journal Article |
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2012 |
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PLoS ONE |
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PLoS ONE |
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7 |
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2 |
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e32566 EP - |
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<p>Relationships we have with our friends, family, or colleagues influence our personal decisions, as well as decisions we make together with others. As in human beings, despotism and egalitarian societies seem to also exist in animals. While studies have shown that social networks constrain many phenomena from amoebae to primates, we still do not know how consensus emerges from the properties of social networks in many biological systems. We created artificial social networks that represent the continuum from centralized to decentralized organization and used an agent-based model to make predictions about the patterns of consensus and collective movements we observed according to the social network. These theoretical results showed that different social networks and especially contrasted ones – star network vs. equal network – led to totally different patterns. Our model showed that, by moving from a centralized network to a decentralized one, the central individual seemed to lose its leadership in the collective movement's decisions. We, therefore, showed a link between the type of social network and the resulting consensus. By comparing our theoretical data with data on five groups of primates, we confirmed that this relationship between social network and consensus also appears to exist in animal societies.</p> |
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Public Library of Science |
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Equine Behaviour @ team @ |
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5712 |
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Author |
Puga-Gonzalez, I.; Hildenbrandt, H.; Hemelrijk, C.K. |
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Title |
Emergent Patterns of Social Affiliation in Primates, a Model |
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Journal Article |
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2009 |
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PLoS Comput Biol |
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PLoS Comput Biol |
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5 |
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12 |
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e1000630 |
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Author Summary
<p>Individual primates distribute their affiliative behaviour (such as grooming) in complex patterns among their group members. For instance, they reciprocate grooming, direct it more to partners the higher the partner's rank, use it to reconcile fights and do so in particular with partners that are more valuable. For several types of patterns (such as reconciliation and exchange), a separate theory based on specific cognitive processes has been developed (such as individual recordkeeping, a tendency to exchange, selective attraction to the former opponent, and estimation of the value of a relationship). It is difficult to imagine how these separate theories can all be integrated scientifically and how these processes can be combined in the animal's mind. To solve this problem, we first surveyed the empirical patterns and then we developed an individual-based model (called GrooFiWorld) in which individuals group, compete and groom. The grooming rule is based on grooming out of fear of defeat and on the anxiety reducing effects of grooming. We show that in this context this rule alone can explain many of the patterns of affiliation as well as the differences between egalitarian and despotic species. Our model can be used as a null model to increase our understanding of affiliative patterns of primates.</p> |
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Public Library of Science |
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Equine Behaviour @ team @ |
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5246 |
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Wascher, C.A.F.; Fraser, O.N.; Kotrschal, K. |
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Title |
Heart Rate during Conflicts Predicts Post-Conflict Stress-Related Behavior in Greylag Geese |
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2010 |
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PLoS ONE |
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PLoS ONE |
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5 |
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12 |
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e15751 |
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Background
Social stressors are known to be among the most potent stressors in group-living animals. This is not only manifested in individual physiology (heart rate, glucocorticoids), but also in how individuals behave directly after a conflict. Certain ‘stress-related behaviors’ such as autopreening, body shaking, scratching and vigilance have been suggested to indicate an individual's emotional state. Such behaviors may also alleviate stress, but the behavioral context and physiological basis of those behaviors is still poorly understood.
Methodology/Principal Findings
We recorded beat-to-beat heart rates (HR) of 22 greylag geese in response to agonistic encounters using fully implanted sensor-transmitter packages. Additionally, for 143 major events we analyzed the behavior shown by our focal animals in the first two minutes after an interaction. Our results show that the HR during encounters and characteristics of the interaction predicted the frequency and duration of behaviors shown after a conflict.
Conclusions/Significance
To our knowledge this is the first study to quantify the physiological and behavioral responses to single agonistic encounters and to link this to post conflict behavior. Our results demonstrate that ‘stress-related behaviors’ are flexibly modulated by the characteristics of the preceding aggressive interaction and reflect the individual's emotional strain, which is linked to autonomic arousal. We found no support for the stress-alleviating hypothesis, but we propose that stress-related behaviors may play a role in communication with other group members, particularly with pair-partners. |
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Equine Behaviour @ team @ |
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5298 |
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Viry, S.; Sleimen-Malkoun, R.; Temprado, J.-J.; Frances, J.-P.; Berton, E.; Laurent, M.; Nicol, C. |
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Title |
Patterns of Horse-Rider Coordination during Endurance Race: A Dynamical System Approach |
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2013 |
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PLoS ONE |
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PLoS ONE |
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8 |
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8 |
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e71804 EP - |
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<p>In riding, most biomechanical studies have focused on the description of the horse locomotion in unridden condition. In this study, we draw the prospect of how the basic principles established in inter-personal coordination by the theory of <italic>Coordination Dynamics</italic> may provide a conceptual and methodological framework for understanding the horse-rider coupling. The recent development of mobile technologies allows combined horse and rider recordings during long lasting natural events such as endurance races. Six international horse-rider dyads were thus recorded during a 120 km race by using two tri-axial accelerometers placed on the horses and riders, respectively. The analysis concentrated on their combined vertical displacements. The obtained shapes and angles of Lissajous plots together with values of relative phase between horse and rider displacements at lower reversal point allowed us to characterize four coordination patterns, reflecting the use of two riding techniques per horse's gait (trot and canter). The present study shows that the concepts, methods and tools of self-organizing dynamic system approach offer new directions for understanding horse-rider coordination. The identification of the horse-rider coupling patterns constitutes a firm basis to further study the coalition of multiple constraints that determine their emergence and their dynamics in endurance race.</p> |
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Equine Behaviour @ team @ |
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5706 |
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Hausberger, M.; Gautier, E.; Biquand, V.; Lunel, C.; Jégo, P. |
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Title |
Could Work Be a Source of Behavioural Disorders? A Study in Horses |
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2009 |
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PLoS ONE |
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PLoS ONE |
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4 |
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10 |
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e7625 EP - |
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<p>Stress at work, as shown by a number of human studies, may lead to a variety of negative and durable effects, such as impaired psychological functioning (anxiety, depression…). Horses share with humans this characteristic of working on a daily basis and are submitted then to work stressors related to physical constraints and/or more “psychological” conflicts, such as potential controversial orders from the riders or the requirement to suppress emotions. On another hand, horses may perform abnormal repetitive behaviour (“stereotypies”) in response to adverse life conditions. In the present study, we investigated whether the type of work the horses are used for may have an impact on their tendency to show stereotypic behaviour (and its type) outside work. Observations in their box of 76 horses all living in the same conditions, belonging to one breed and one sex, revealed that the prevalence and types of stereotypies performed strongly depended upon the type of work they were used for. The stereotypies observed involved mostly mouth movements and head tossing/nodding. Work constraints probably added to unfavourable living conditions, favouring the emergence of chronic abnormal behaviours. This is especially remarkable as the 23 hours spent in the box were influenced by the one hour work performed every day. To our knowledge, this is the first evidence of potential effects of work stressors on the emergence of abnormal behaviours in an animal species. It raises an important line of thought on the chronic impact of the work situation on the daily life of individuals.</p> |
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Equine Behaviour @ team @ |
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5707 |
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