week FOUR: Cleaning and Sanitizing Milking Equipment
All milking equipment, lines, and utensil surfaces that come into contact with milk, dirt, or manure must be thoroughly cleaned and sanitized before the next milking. Bulk milk tanks also must be cleaned after each milk pickup and sanitized before the next milking. The purpose of cleaning is to remove milk soils as well as organic and mineral solids that form on equipment surfaces after the milk is removed. The purpose of sanitizing is to kill residual microorganisms present on these surfaces immediately prior to milking. Inadequate or improper cleaning or sanitizing or both allow bacteria to remain on equipment surfaces and to grow and multiply. This results in elevated bacteria counts in milk.
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