LANSING, Mich. -

The Michigan appeals court has rejected a challenge to the state's ban on wild hogs.

The Michigan Animal Farmers Association claims the rule is an unconstitutional taking of property and that the Department of Natural Resources had no authority to adopt the regulation. But in a 3-0 decision Friday, the appeals court disagreed.

Wildlife officials consider the wild hogs to be an invasive species that threaten crops and other animals. Some ranch owners say banning animals would cripple their businesses. The ranches allow people to hunt them for sport.

A ban on wild hogs was announced in December 2010 but actual enforcement isn't expected to become official until the end of March.