Behavioural and physiological responses of piglets to naturally occurring sounds

s /Applied Animal Behaviour Science 44 (1995) 257-281 277 musings result from stress, but the effect is not mediated by hypothalamo-pituitary-adreno-cortical (HPA) activity, throwing doubt on the value of this traditional index of stress. Behavioural and physiological responses of piglets to naturally occurring sounds J.C. Spensley”, CM. Wathesa, N.K. Waranb, J.A. Lined’ aSilsoe Research Institute, Wrest Park, Silsoe, Bedford, UK...