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Vocal Response To Pain In Piglets, Daniel M. Weary, Leah A. Braithwaite, David Fraser
Vocal Response To Pain In Piglets, Daniel M. Weary, Leah A. Braithwaite, David Fraser
Farm Animal Welfare Collection
Three experiments were performed attempting to establish the validity of vocal measures as an indicator of the immediate response to pain in domestic piglets. Vocalisations were measured while piglets were subjected to the routine farm practice of castration without anaesthetic, or restrained identically but not castrated (i.e., sham-castrated). In Experiment 1 we measured how calling changed during the different stages of the procedure, and in Experiments 2 and 3 we measured the effect of different restraint techniques. Piglets that were castrated produced significantly more high frequency calls ( >1000 Hz) than sham castrates in all three experiments. In Experiment 1, …