Effects of sickness on behaviour and resource use of pair-housed piglets
By ST Millman, KC Sheppard, A Gallien and JT Gray, Department of Population Medicine, University of Guelph - This article is taken from the University of Guelph Swine Research Review 2005 report. Sick animals often display characteristic behavioural changes including lethargy, anorexia, increased thermoregulatory behaviour, increased slow-wave sleep, avoidance of social contact, and reduced exploratory behaviour.