Rooting is the single most motivated natural behavior in pigs, and its deprivation in barren production systems is a primary cause of the welfare problems endemic to intensive pig farming.
Rooting is to pigs what flight is to birds or running is to horses — a behavioral system so fundamental that its deprivation causes a cascade of welfare problems. Pigs deprived of rooting substrate are not simply bored; they experience genuine motivational frustration that manifests as redirection of rooting behavior onto herd mates, causing tail biting and other harmful behaviors. The industry response — tail docking to prevent tail biting — addresses a symptom while leaving the cause untreated. Providing appropriate rooting substrate eliminates the need for tail docking in most cases. This solution is known, available and partially economically beneficial. What it requires is the will to change the system.