Did you know? 20% of the milk in a cow’s udder at the beginning of milking is stored in the teat and udder cisterns and 80% is stored within the alveoli. Milk in the teat and udder cisterns can be easily removed from the cow once the milking unit is attached. For the majority of milk stored in the alveoli, there is heavy reliance on cooperation from the cow’s physiological system. This cooperation begins with proper pre-milking procedures for oxytocin letdown. | GEA Farming - United States