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How does milking work in a dairy stall barn?

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In a dairy stall barn, milking is typically performed by a trained operator using mechanical equipment. The process generally follows these steps:1

  • Preparation: The cow’s udder and teats are first cleaned to ensure hygiene.1
  • Attachment: The operator attaches the teat cups of the milking machine to the cow.1
  • Extraction: The machine mimics the natural nursing action of a calf by creating a pulsating vacuum around the teat. This suction causes the milk to be released from the udder.2
  • Collection: The milk is drawn through piping directly into a receiver or into a farm milk tank, where it is cooled to 50 °F (10 °C) or less to maintain quality.1

An experienced milker typically manages one to three machine units at a time. While hand-milking is a traditional alternative that involves squeezing the teats with the thumb and forefinger, machine-milking is the standard in modern commercial dairies due to its efficiency in handling entire herds twice daily.12