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The Effect Of Straw On The Behaviour Of Sows In Tether Stalls, D. Fraser
The Effect Of Straw On The Behaviour Of Sows In Tether Stalls, D. Fraser
Housing and Confinement of Farm Animals Collection
The behaviour of sows in tether stalls with and without straw was studied in two experiments. Sows lay down more when 1 kg of straw was provided daily, especially when it was chopped and mixed wet with the food (dietary effect). Sows without straw performed a variety of stereotyped oral and other activities which were greatly reduced by the provision of loose straw that could be chewed and manipulated throughout the day (recreational effect). Sows were frequently seen standing or sitting motionless with the head drooping, probably in a state of drowsiness. This behaviour was virtually eliminated by full straw …
Social Stress And Welfare Problems In Agricultural Animals, D. G. M. Wood-Gush, I. J. H. Duncan, D. Fraser
Social Stress And Welfare Problems In Agricultural Animals, D. G. M. Wood-Gush, I. J. H. Duncan, D. Fraser
Farm Animal Welfare Collection
Disruptions of an animal's social behaviour can, in some respects at least, mimic the effects of such classical stressors as infection and exposure to low temperatures. For example, Barnett (1958) found enlarged adrenals among wild rats which were subjected to attack by other rats in the laboratory. However, the experience of being attacked was not necessary for this physiological response, as the aggressors showed much the same changes as the victims. In fact Archer (1969) reported heightened adrenocortical activity among individually caged mice simply as a result of their being housed next to other mice, without actual physical contact. If …