Research from PennState shows post-pasteurization hygiene of waste milk needs improvement. Waste-milk samples taken from calf-feeding buckets had significantly more bacteria than the original samples taken before pasteurization. “This just means that people are not paying attention to the handling of pasteurized waste milk or they are not properly cleaning the containers or equipment used to handle it,” note Jorge Elizondo-Salazar and Jud Heinrichs in the December Penn State Dairy Digest.

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