GREEN BAY, Wis. (AP) — Four Wisconsin dairy farm workers have been charged with mistreating animals after an animal rights group released secretly recorded video. Video released in December by the animal rights group Mercy For Animals showed workers at Wiese Brothers Farm beating, kicking, stabbing and whipping sick and injured cows. Farm owner Mark Wiese told The Associated Press then that he had fired two workers and reassigned a third to duties that didn't involve animals. He did not immediately return a message left Thursday for comment on the charges. Four dairy farm workers were charged Tuesday in Brown County with multiple counts of mistreating animals. Each count is punishable by up to nine months in prison. The four are scheduled to appear in court in Green Bay on March 4. They do not have attorneys listed in online court records.