Automated rotating grooming brushes installed in dairy cow housing provide a voluntary positive welfare resource that cows use frequently and consistently choose over other enrichment options.
Automated grooming brushes represent one of the clearest examples of a simple, low-cost intervention that delivers measurable positive welfare benefits for dairy cows. The fact that cows choose to use brushes voluntarily and for extended periods demonstrates genuine motivational engagement rather than incidental contact. The brain activation patterns and cardiovascular responses during brush use are consistent with positive emotional states, providing physiological evidence for the welfare benefit rather than relying on behavioural observation alone. For dairy farmers seeking to improve positive welfare indicators alongside preventing negative experiences, grooming brush provision is one of the most evidence-backed and practical steps available.