Brain gene expression in relation to fearfulness in female red junglefowl (Gallus gallus).

  title={Brain gene expression in relation to fearfulness in female red junglefowl (Gallus gallus).},
  author={Markus J{\"o}ngren and Jennie Westander and Daniel N{\"a}tt and P. V. Jensen},
  journal={Genes, brain, and behavior},
  volume={9 7},
The biology of fear is central to animal welfare and has been a major target for selection during domestication. Fear responses were studied in female red junglefowl (RJF), the ancestor of domesticated chickens. A total of 31 females were tested in a ground predator test, an aerial predator test and a tonic immobility (TI) test, in order to assess their level of fearfulness across different situations. Two to six variables from each test were entered into a principal component (PC) analysis… CONTINUE READING
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