The DeLaval cow brush automatically rotates at a cow-friendly speed when it is touched. It provides a 'safe and comfortable brushing at all angles.'
The DeLaval company provides its customers with a wide array of products and equipment for farm production of buffaloes, sheep, goats and cows.
Implications - The featured video shows the scratching machine hard at work, pleasing all of the cows around it. The brush actually "improves animal welfare by increasing blood circulation while keeping the cows clean, busy and calm." Having a big mechanical brush for the cows is much better than having the cows try to scratch themselves in a somewhat crowded area.