Rooting is a fundamental foraging behaviour in pigs, driven by strong innate motivation. Commercial housing on slatted or concrete floors with no substrate prevents this behaviour entirely, causing frustration and contributing to welfare problems.
Preventing rooting is one of the most significant behavioural deprivations in commercial pig production. The inability to fulfil this core motivation causes chronic frustration that manifests as redirected oral behaviour toward pen mates and fixtures. Tail biting, a major welfare and economic problem in pig farming, is substantially reduced when pigs have access to rooting substrate. The barriers to enrichment provision are largely management-related rather than fundamental - systems that accommodate rooting substrate exist and are commercially viable.