Supersized livestock operations in rural Illinois and around the country are breeding controversy as neighbors complain about manure, odors and worries of declining property values.

Known as concentrated animal feeding operations, the farms can hold thousands of cattle or tens of thousands of hogs. Some generate more waste than many cities, prompting complaints that gases are causing health problems and that manure runoff pollutes waterways and wells.

In Illinois, there are thousands of the farms, with applications for dozens more.

Curt Davis lives near one in Buckhart in central Illinois that he failed to stop with a lawsuit. He says it's more like a factory than a farm.

Owner Robert Young says the economy left him little choice but to embrace the new type of livestock operation.