When Kelderview Holsteins operated a parlour, they saw one or two cases of mastitis per month. After the installation of the robotic milking system, for two years they had almost no cases of mastitis. Op den Kelder attributes this drop to an increase in daily milkings.  They went from milking the cows twice a day to an average of 3.6 and 3.1 milkings with the robotic milking system for their older cows and heifers, respectively. With more frequent milkings, the cows leak less milk and their risk of mastitis is decreased.