Milking is the act of removing milk from the mammary glands of cattle, water buffalo, humans, goats, sheep and more rarely camels, horses and donkeys. Milking may be done by hand or by machine, and requires the animal to be currently or recently pregnant. The milker may refer either to the animal that produces the milk or the person who milks said animal.
Hand milking
Hand milking is performed by massaging and pulling down on the teats of the udder, squirting the milk into a bucket. Two main methods are used:
The top of the teat is pinched shut betweenfinger and thumb, trapping milk in the lower part, which is then squeezed by the other fingers, squirting the milk out through the hole in the tip of the teat.
The top of the teat is pinched shut by the fingers and thumb, which are then slid down the teat, pushing the milk towards the bottom.
Machine milking
Most milking in the developed world is done using milking machines. Teat cups are attached to the cow's teats, and then the cups alternate between vacuum and normal air pressure to extract the milk. The milk is filtered and cooled before being added to a large bulk tank of milk for storage.
The existing robotic milking has allowed cows to have the freedom to decide when to milk, but still needs to make contact with people – entering the milking room is equal to getting food.
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