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de Boyer des Roches, A.; Durier, V.; Richard-Yris, M.-A.; Blois-Heulin, C.; Ezzaouïa, M.; Hausberger, M.; Henry, S. |
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Title |
Differential outcomes of unilateral interferences at birth |
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2011 |
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Biology Letters |
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7 |
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2 |
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177-180 |
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Behavioural modifications, including modifications of emotional reactivity, can occur following early experience such as handling (manual rubbing). Here, we investigated the effects of unilateral tactile stimulation at an early stage on emotional reactions later on. We handled newborn foals intensively on one side of their body. This early unilateral tactile experience had medium-term effects: the reactions of foals to a human approach, when they were 10 days old, differed according to the side stimulated at birth. Fewer right-handled foals accepted contact with humans, they delayed first contact longer and they evaded approaching humans sooner than did non-handled and left-handled foals. These results raise questions concerning the organization of neonatal care in animals and humans. |
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10.1098/rsbl.2010.0979 |
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Equine Behaviour @ team @ |
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5414 |
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Benhajali, H.; Richard-Yris, M.-A.; Ezzaouia, M.; Charfi, F.; Hausberger, M. |
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Title |
Reproductive status and stereotypies in breeding mares: A brief report |
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Journal Article |
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2010 |
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Applied Animal Behaviour Science |
Abbreviated Journal |
Appl. Anim. Behav. Sci. |
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128 |
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1-4 |
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64-68 |
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Stereotypies; Breeding mare; Sire; Reproductive-status |
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The aim of this study was to investigate the relationship between age, reproductive status and sire of the mare and the tendency to perform stereotypies. One hundred and fourteen purebred Arab mares, offspring of 39 sires ( offspring per sire) and aged 4-21 years () were observed from the 30th March to the 15th of May 2005 using instantaneous scan sampling. We used a multivariate logistic regression in order to study the relationship between age, reproductive status and sire of the mare and the tendency to perform stereotypies. 28% of the observed mares showed stereotypic behaviour, mostly weaving (22%). Neither age (χ2 Wald = 9.36, p = 0.89) nor sire (χ2 Wald = 4.34, p = 1.0) affected the occurrence of stereotypies whilst the reproductive status of the mare influenced significantly the occurrence (χ2 Wald = 10.75, p = 0.001) but also the type (χ2 = 12.1, p < 0.001) of stereotypic behaviour. Weaving was more frequent in non foaling mares (41.4%) than in foaling mares (1.8%) that performed mostly stall-walking. |
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0168-1591 |
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Equine Behaviour @ team @ |
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5279 |
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Hausberger, M.; Richard-Yris, M.-A. |
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Individual differences in the domestic horse, origins, development and stability |
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2005 |
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The domestic horse : the origins, development, and management of its behaviour |
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33-52 |
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Cambridge University Press 2005 |
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Cambridge |
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Mills, D.S.; McDonnell, |
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13 978-0-521-81414-6 |
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Equine Behaviour @ team @ Feh2005 |
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4819 |
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Wauters, A. M.; Richard-Yris, M.-A.; Richard, J. P.; Foraste M. |
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Title |
Internal and external factors modulate food-calling in domestic hens |
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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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1 |
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1-10 |
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Two series of experiments investigated factors affecting utterance of food calls in the domestic hen, Gallus domesticus. The first series of experiments tested the effect of food preference and the hen’s internal state on the utterance of food calls. Different food types were presented first singly and then in a choice test to 20 hens, first when hens were laying, and then when they were maternal. The second series of experiments tested the effect of hunger level on the utterance of food calls in laying hens, and maternal hens with or without chicks. These two series of experiments showed that laying hens and maternal hens showed a similar marked preference for certain types of food, but laying hens very rarely emitted food calls, in contrast to maternal hens. This shows the effect of the bird’s psychophysiological state on her tendency to emit food calls. The more a maternal hen preferred a food type, the more food calls she emitted. This was observed from the beginning of a test in single-food tests as well as in choice tests. Hunger level positively affected food-call production under certain feeding conditions in maternal hens, but not in laying hens. When maternal hens were tested in the absence of their chicks, utterance of food calls was more sustained than in the presence of chicks. |
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Equine Behaviour @ team @ |
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3306 |
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