Cow Cruelty Shakes Up DiGiorno Pizza's Supply Chain

Ari Solomon, spokesman for the animal rights group Mercy for Animals, speaks on Dec. 10 at a news conference in Milwaukee about the results of an undercover investigation at Wiese Brothers Farm in Greenleaf, Wis. Photograph by Michelle L. Johnson/AP Photo

A DiGiorno Pizza cheese supplier will stop buying milk from a farm at the center of an animal-cruelty exposé, in the latest sign that formerly fringe concerns over the humane treatment of livestock have become a real issue for food producers and fast-food chains.

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