(NBC NEWS) Four workers from a Wisconsin dairy farm who were seen on an undercover video allegedly abusing cows have been charged with a total of 11 counts of animal cruelty.

Video shot by an undercover investigator for the animal rights group Mercy for Animals late last year showed employees at Wiese Brothers Farm in Greenleaf, Wis. kicking, beating and stabbing cows and dragging the animals with ropes.

When NBC News showed the video to DiGiorno Pizzas, which purchased cheese made from Wiese Brothers’ milk, the nation’s largest frozen pizza company said it would no longer accept products made from the farm’s milk.

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