Rooting is one of the most fundamental behavioural needs of pigs, and systems that prevent its expression cause chronic frustration that undermines welfare across billions of animals globally.
The deprivation of rooting opportunities in intensive pig systems represents one of the most widespread welfare failures in modern agriculture. The strength of the rooting motivation means that pigs on bare slatted floors are in a state of chronic behavioural frustration, performing vacuum rooting movements that indicate a motivation that cannot be satisfied. Even when enrichment materials are provided, they often fail to satisfy the full rooting behaviour sequence because they do not allow the depth, variety, and substrate manipulation that natural rooting involves. System-level change towards bedded and outdoor systems that allow genuine rooting is the only adequate welfare solution, though improved enrichment is a meaningful interim measure.