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Author Boyd, L.; Keiper, R.
Title Behavioural ecology of feral horses Type Book Chapter
Year 2005 Publication The domestic horse: the origins, development, and management of its behaviour Abbreviated Journal (up)
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Publisher Cambridge University Press Place of Publication Cambridge Editor Mills, D. S.; McDonnell S. M.
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5439
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Author Güntürkün, O.
Title How asymmetry in animals starts Type Journal Article
Year 2005 Publication European Review Abbreviated Journal (up)
Volume 13 Issue 2 Pages 105-118
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Abstract This review aims to present a speculation about mechanisms that shape the brains of humans and other animals into an asymmetrical organization. To this end, I will proceed in two steps: first, I want to recapitulate evidence from various experiments that show that some but not all asymmetries of the avian brain result from a prehatch light stimulation asymmetry. This should make it clear that avian embryos have a genetic predisposition to turn their head to the right. This results in a higher level of prehatch light stimulation of their right eye. The concomitant left–right difference in sensory input alters the brain circuits of the animal for the entire lifespan in a lateralized way. In the second part of the paper I will present evidence that some of the asymmetries of the human brain take a similar ontogenetic path as those observed in birds. This review provides the evidence that critical ontogenetic processes discovered in animal models could also be involved in the ontogeny of human cerebral asymmetries.
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Call Number Equine Behaviour @ team @ Serial 5674
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Author Shen, Y.-Q.; Hebert, G.; Lin, L.-Y.; Luo, Y.-L.; Moze, E.; Li, K.-S.; Neveu, P.J.
Title Interleukine-1β and interleukine-6 levels in striatum and other brain structures after MPTP treatment: influence of behavioral lateralization Type Journal Article
Year 2005 Publication Journal of Neuroimmunology Abbreviated Journal (up)
Volume 158 Issue 1–2 Pages 14-25
Keywords N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine; Dopamine; Brain; Interleukin-6; Interleukin-1β; Behavioral lateralization
Abstract MPTP (N-methyl-4-phenyl-1,2,3,6-tetrahydropyridine) induces diminution of the dopamine in nigrostriatal pathway and cognitive deficits in mice. MPTP treatment also increases pro-inflammatory cytokine production in substantia nigra and striatum. Since, pro-inflammatory cytokines influence striatal dopamine content and provoke cognitive impairments, the cognitive defects induced by MPTP may be partly due to brain cytokine induction in other structures than nigrostriatal pathway. Furthermore, behavioral lateralization, as assessed by paw preference, influences cytokine production at the periphery and in the central nervous system. Behavioral lateralization may thus influence brain cytokine levels after MPTP. In order to address these issues, mice selected for paw preference were injected with 25 mg/kg MPTP i.p. for five consecutive days after which striatal dopamine and DOPAC contents were measured by HPLC and IL-1&#946; and IL-6 quantified by ELISA in the striatum, cerebral cortex, hippocampus and hypothalamus. The results showed that MPTP treatment induced dramatic loss of DA in striatum, simultaneously, IL-6 levels decreased in the striatum and increased in hippocampus and hypothalamus, while IL-1&#946; levels decreased in the striatum, cerebral cortex and hippocampus. Interestingly, striatal dopamine turnover under basal conditions as well as striatal IL-1&#946; and IL-6 levels under basal conditions and after MPTP depended on behavioral lateralization. Left pawed mice showed a higher decrease in dopamine turnover and lower cytokine levels as compared to right pawed animals. Behavioral lateralization also influenced IL-6 hippocampal levels under basal conditions and IL-1&#946; cortical levels after MPTP. From these results, it can be concluded that MPTP-induced cognitive defects are accompanied by an alteration of pro-inflammatory cytokine levels in brain structures other than those involved in the nigrostriatal pathway. In addition, MPTP-induced dopamine decrease is influenced by behavioral lateralization, possibly through an effect on brain cytokine levels.
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ISSN 0165-5728 ISBN Medium
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Notes Approved no
Call Number Equine Behaviour @ team @ Serial 5781
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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 (up)
Volume 65 Issue Pages
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Call Number Equine Behaviour @ team @ Kruska2005 Serial 6235
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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 (up)
Volume 8 Issue Pages
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Call Number Equine Behaviour @ team @ Saunders2005 Serial 6252
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Author Shi, J.; Dunbar, R.I.M.; Buckland, D.; Miller, D.
Title Dynamics of grouping patterns and social segregation in feral goats (Capra hircus) on the Isle of Rum, NW Scotland Type Journal Article
Year 2005 Publication Mammalia Abbreviated Journal (up)
Volume 69 Issue Pages
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Call Number Equine Behaviour @ team @ Shi2005 Serial 6257
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Author Pérez-Barbería, F.J.; Gordon, I.J.
Title Gregariousness increases brain size in ungulates Type Journal Article
Year 2005 Publication Oecologia Abbreviated Journal (up)
Volume 145 Issue Pages
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Call Number Equine Behaviour @ team @ Pérez-Barbería2005 Serial 6258
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Author Galef, B.G.; Laland, K.N.
Title Social Learning in Animals: Empirical Studies and Theoretical Models Type Journal Article
Year 2005 Publication BioScience Abbreviated Journal (up)
Volume 55 Issue 6 Pages 489-499
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Abstract AbstractThe last two decades have seen a virtual explosion in empirical research on the role of social interactions in the development of animals' behavioral repertoires, and a similar increase in attention to formal models of social learning. Here we first review recent empirical evidence of social influences on food choice, tool use, patterns of movement, predator avoidance, mate choice, and courtship, and then consider formal models of when animals choose to copy behavior, and which other animals' behavior they copy, together with empirical tests of predictions from those models.
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ISSN 0006-3568 ISBN Medium
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Notes 10.1641/0006-3568(2005)055[0489:Sliaes]2.0.Co;2 Approved no
Call Number Equine Behaviour @ team @ Serial 6398
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Author Hanggi, E.B.
Title The Thinking Horse: Cognition and Perception Type Conference Article
Year 2005 Publication International Veterinary Information Service Abbreviated Journal (up) AAEP
Volume 51 Issue Pages
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Abstract Cognition and perception in horses has often been misunderstood. Not only in the past but even today, people proclaim that horses react only by instinct, that they are just conditioned-response animals, that they lack advanced cognitive ability, and that they have poor visual capabilities (e.g., acuity, color vision, depth perception). Until relatively recently, there was little scientific evidence to address such beliefs. Change, however, is underway as scientific and public interest in all aspects of equine learning and perception intensifies. A review of the scientific literature, as well as practical experience, shows that horses excel at simpler forms of learning such as classical and operant conditioning, which is not surprising considering their trainability when these principles and practices are applied. Furthermore, horses have shown ease in stimulus generalization and discrimination learning. Most recently and unexpected by many, horses have solved advanced cognitive challenges involving categorization learning and some degree of concept formation. A comprehensive understanding of the cognitive and perceptual abilities of horses is necessary to ensure that this species receives proper training, handling, management, and care.
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Call Number refbase @ user @ Serial 465
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Author Mejdell, C.M.; Simensen, E.; Boe, K.E.
Title Is snow a sufficient source of water for horses kept outdoors in winter? A case report Type Journal Article
Year 2005 Publication Acta Veterinaria Scandinavica Abbreviated Journal (up) Acta Vet Scand
Volume 46 Issue 1-2 Pages 19-22
Keywords Animals; *Drinking Behavior; *Horses; Norway; Osmolar Concentration; Snow; *Thirst; *Water Supply
Abstract Due to extreme weather conditions, a flock of outwintered Icelandic horses had to manage for several days on snow as the source of free water. They were fed grass silage ad lib, and any change in feed consumption was not observed. After nine days, blood samples were taken and analysed for plasma osmolality, they were subjected to a simple clinical examination, and offered drinking water. Osmolality levels were within normal limits and mean value did not differ significantly from samples which previously were taken of the same individuals. The general condition of the horses was normal, with no signs of clinical dehydration or disease. The horses showed very little interest for the offered drinking water. This suggests that in cold winter weather, horses being fed grass silage and adjusted to eat snow, can manage for several days with snow substituting liquid water without their physiology and welfare being challenged.
Address National Centre for Veterinary Contract Research and Commercial Services, Ltd
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Language English Summary Language Original Title
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ISSN 0044-605X ISBN Medium
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Notes PMID:16108209 Approved no
Call Number Serial 1886
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