In this Jan. 4, 2005 file photo, a group of young pigs stare out of a pen at a hog farm in central North Dakota. (AP Photo/Will Kincaid, File)
In this Jan. 4, 2005 file photo, a group of young pigs stare out of a pen at a hog farm in central North Dakota. (AP Photo/Will Kincaid, File) Will Kincaid AP
In this Jan. 4, 2005 file photo, a group of young pigs stare out of a pen at a hog farm in central North Dakota. (AP Photo/Will Kincaid, File) Will Kincaid AP