MADISON, Wis. (AP) — The Department of Natural Resources has approved a permit for a new factory farm in southwestern Wisconsin, a region known for its rolling hills and clear trout streams. Howard “AV” Roth plans to construct a second hog farm, this one capable of producing up to 140,000 piglets a year. The farm in Crawford County will also have about 5,100 female pigs and about 50 boars. The piglets will be shipped to other farms to be raised. Area residents are concerned that liquid manure could be over-applied to fields as fertilizer and potentially sink down into the groundwater, or run off of the soil and into streams and rivers.