McBAIN, Mich. (AP) — Michigan's effort to wipe out exotic hogs is causing a backlash among farmers and hunting ranch operators that raise them.Officials believe up to 3,000 feral swine are on the loose in Michigan after escaping from hunting preserves. They're notorious for damaging crops, spreading diseases and competing with native wildlife for food.The state this month began enforcing an order banning possession of the swine. But several producers have responded with lawsuits, contending they have a right to raise the animals.Mark Baker of Missaukee County says the state Department of Natural Resources is doing the bidding of big farms that want to eliminate competitors.But the DNR says its only motive is protecting agriculture and the environment.