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Fearfulness in red junglefowl and domesticated White Leghorn chickens
Linköping University, Department of Physics, Chemistry and Biology, Zoology . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Zoology . Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Zoology . Linköping University, The Institute of Technology.
2009 (English)In: BEHAVIOURAL PROCESSES, ISSN 0376-6357, Vol. 81, no 1, 39-43 p.Article in journal (Refereed) Published
Abstract [en]

It may be hypothesised that reduced fearfulness has been a major target of selection during domestication. We tested 20 domesticated White Leghorn (WL) chickens and their ancestors, red junglefowl (RJF), in four different fear tests (Open Field, Novel Object. Aerial Predator, and Fear for Humans). The tests were designed to measure reactions to different types of potentially fearful stimuli. The correlations between durations of the same four variables from each of the tests (Stand/sit alert, Locomotion, Fly/jump, and Vocalisation) were analysed with principal components analysis (PCA). In the PCA, 33.5% of the variation in responses was explained by a single factor, interpreted as a general fear factor. Higher scores on this were related to stronger fear reactions. Red jungle fowl scored significantly higher than White Leghorns wet on this factor, and also had a longer latency to feed in the Fear of Humans-test, used as an independent measure of fear in the same tests. The results suggest that selection for low fearfulness has been an important element of domestication.

Place, publisher, year, edition, pages
2009. Vol. 81, no 1, 39-43 p.
Keyword [en]
Behaviour, Chicken, Domestication, Fear, Stress
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-18402DOI: 10.1016/j.beproc.2008.12.018OAI: oai:DiVA.org:liu-18402DiVA: diva2:218918
Available from: 2009-05-25 Created: 2009-05-25 Last updated: 2011-01-11Bibliographically approved

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Campler, MagnusJöngren, MarkusJensen, Per

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf