Abstract:A major problem reported by many commercial producers keeping sows in group housing systems, is that of inter-sow aggression and bullying, due to the establishment and maintenance of a social hierarchy. Even in stalls and tethers, inter-neighbour aggression can be high but the physical consequences for the sow receiving the aggression are negligible, due to the lack of opportunity for physical contact. In a group situation, an inability to prevent attack by another sow can itself lead to poor welfare, in addit… Show more
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