A critical review of fear tests used on cattle, pigs, sheep, poultry and horses

@article{Forkman2007ACR,
  title={A critical review of fear tests used on cattle, pigs, sheep, poultry and horses},
  author={Bj{\"o}rn Forkman and Alain Boissy and Marie-Christine Meunier-Sala{\"u}n and Elisabetta Canali and R. Bryan Jones},
  journal={Physiology \& Behavior},
  year={2007},
  volume={92},
  pages={340-374}
}

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Correlations between behavioural and heart rate variables in the behavioural tests revealed that horses with a high level of locomotion or much restlessness behaviour exhibited high mean heart rate and low heart rate variability.
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