Indicators of positive and negative emotions and emotional contagion in pigs

@article{Reimert2013IndicatorsOP,
  title={Indicators of positive and negative emotions and emotional contagion in pigs},
  author={Inonge Reimert and J. Elizabeth Bolhuis and Bas Kemp and T. Bas Rodenburg},
  journal={Physiology \& Behavior},
  year={2013},
  volume={109},
  pages={42-50}
}
For the welfare of group-housed animals, such as pigs, the emotional state of an individual pig is relevant, but also the extent to which pen mates are affected by the distress or pleasure of other individuals, i.e. emotional contagion, a simple form of empathy. Therefore, indicators of positive and negative emotions were investigated in pigs during anticipation and experience of a rewarding (access in pairs to a compartment with straw, peat and chocolate raisins) or aversive (social isolation… Expand
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