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Author |
Löckener, S.; Reese, S.; Erhard, M.; Wöhr, A.-C. |
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Title |
Pasturing in herds after housing in horseboxes induces a positive cognitive bias in horses |
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Journal Article |
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Year |
2016 |
Publication |
Journal of Veterinary Behavior: Clinical Applications and Research |
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11 |
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50-55 |
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judgment bias; affect; environmental enrichment; well-being; discrimination task; horse |
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Abstract Horses are kept in various housing systems, for example, with conspecifics in horse pens or singly in horseboxes, with or without pasturing. To provide appropriate living conditions for horses, it is necessary to know in which conditions they feel well or unwell. Here, a cognitive bias assessment provides information about an individual's affective state and its well-being. When a positive affective state prevails, animals tend to judge optimistically in ambiguous situations. When a negative affective state prevails, animals judge pessimistically in unclear situations. In the present study, we trained horses on a spatial discrimination task and evaluated their judgment of ambiguous locations when they had access to pastures and contact to conspecifics versus when they were kept singly in horseboxes. Ten days of pasturing and contact with conspecifics after being kept singly in horseboxes for 6 months induced a positive cognitive bias in the horses. We suggest that horses need to act out certain behaviors like exploration, social interaction, play, or grooming to fulfill their needs. After a time in which they were individually in horseboxes without pasturing and access to the herd, they seem to have a positive cognitive bias once they have access to pastures and conspecifics. This positive cognitive bias effect seems to disappear over time, as horses appear to adapt to the circumstances. |
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1558-7878 |
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Equine Behaviour @ team @ |
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6024 |
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Author |
Brubaker, L.; Udell, M.A.R. |
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Title |
Cognition and learning in horses (Equus caballus): What we know and why we should ask more |
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Journal Article |
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Year |
2016 |
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Behavioural Processes |
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126 |
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121-131 |
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Horse behaviour; Horse welfare; Learning; Social cognition |
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Abstract |
Abstract Horses (Equus caballus) have a rich history in their relationship with humans. Across different cultures and eras they have been utilized for work, show, cultural rituals, consumption, therapy, and companionship and continue to serve in many of these roles today. As one of the most commonly trained domestic animals, understanding how horses learn and how their relationship with humans and other horses impacts their ability to learn has implications for horse welfare, training, husbandry and management. Given that unlike dogs and cats, domesticated horses have evolved from prey animals, the horse-human relationship poses interesting and unique scientific questions of theoretical value. There is still much to be learned about the cognition and behaviour of horses from a scientific perspective. This review explores current research within three related areas of horse cognition: human-horse interactions, social learning and independent learning in horses. Research on these topics is summarized and suggestions for future research are provided. |
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0376-6357 |
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Equine Behaviour @ team @ |
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6021 |
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Author |
Elfers, K.; Marr, I.; Wilkens, M.R.; Breves, G.; Langeheine, M.; Brehm, R.; Muscher-Banse, A.S. |
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Title |
Expression of Tight Junction Proteins and Cadherin 17 in the Small Intestine of Young Goats Offered a Reduced N and/or Ca Diet |
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Journal Article |
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2016 |
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PLoS ONE |
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PLoS ONE |
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11 |
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4 |
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e0154311 |
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<p>Diets fed to ruminants should contain nitrogen (N) as low as possible to reduce feed costs and environmental pollution. Though possessing effective N-recycling mechanisms to maintain the N supply for rumen microbial protein synthesis and hence protein supply for the host, an N reduction caused substantial changes in calcium (Ca) and phosphate homeostasis in young goats including decreased intestinal transepithelial Ca absorption as reported for monogastric species. In contrast to the transcellular component of transepithelial Ca transport, the paracellular route has not been investigated in young goats. Therefore, the aim of the present study was to characterise the effects of dietary N and/or Ca reduction on paracellular transport mechanisms in young goats. Electrophysiological properties of intestinal epithelia were investigated by Ussing chamber experiments. The expression of tight junction (TJ) and adherens junction (AJ) proteins in intestinal epithelia were examined on mRNA level by <italic>q</italic>PCR and on protein level by western blot analysis. Dietary N reduction led to a segment specific increase in tissue conductances in the proximal jejunum which might be linked to concomitantly decreased expression of cadherin 17 mRNA. Expression of occludin (OCLN) and zonula occludens protein 1 was increased in mid jejunal epithelia of N reduced fed goats on mRNA and partly on protein level. Reduced dietary Ca supply resulted in a segment specific increase in claudin 2 and claudin 12 expression and decreased the expression of OCLN which might have been mediated at least in part by calcitriol. These data show that dietary N as well as Ca reduction affected expression of TJ and AJ proteins in a segment specific manner in young goats and may thus be involved in modulation of paracellular Ca permeability.</p> |
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Public Library of Science |
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Equine Behaviour @ team @ |
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6006 |
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Author |
Pick, M.; Pick, J.; Rahn, A.; Wolff, N. |
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Title |
Artgerechte Haltung von Pferden: Sachverständige Empfehlungen zur Pferdehaltung aus Sicht des Tierschutzes |
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Book Whole |
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2016 |
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Tredition GmbH |
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Hamburg |
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Equine Behaviour @ team @ |
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6616 |
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Author |
Hoelker, S. |
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Title |
Typologie der deutschen Pferdehaltung – Eine empirische Studie mittels Two-Step-Clusteranalyse |
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Journal Article |
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Year |
2016 |
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Berichte über Landwirtschaft Zeitschrift für Agrarpolitik und Landwirtschaft |
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Volume |
94 |
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3 |
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BMEL |
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Bonn |
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Equine Behaviour @ team @ |
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6643 |
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Author |
Capitani, C.; Chynoweth, M.; Kusak, J.; Çoban, E.; Sekercioglu, Ç.H. |
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Title |
Wolf diet in an agricultural landscape of north-eastern Turkey |
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2016 |
Publication |
Mammalia |
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Mammalia |
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80 |
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3 |
Pages |
329-334 |
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Mammalia |
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80 |
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3 |
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Equine Behaviour @ team @ |
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6687 |
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