The Ohio Farm Bureau Federation is ramping up its fundraising efforts in order to take on a leading animal rights group over the size of cages, crates and stalls used to house farm animals.

The Humane Society of the United States has met with Ohio cattlemen, pork producers and the poultry industry, telling participants in those industries to change their farming practices or face a ballot initiative. HSUS has initiated such efforts in Florida, Arizona and California; and in those states voters passed the ballot initiatives.

HSUS efforts have focused on three other states -- Maine and Oregon, where the legislatures passed similar regulations to be enacted within their states; the animal-agriculture industry in Colorado made its own changes to avoid such outside action. 

The Ohio Farm Bureau Federation has more than 230,000 members and lobbies for Ohio farmers. The Humane Society is the nation's largest animal rights organization with more than 11 million members.

AP contributed to this story.