SIOUX CITY, Iowa, May 21 (UPI) -- Friday's closing Sioux City Livestock report: Cattle: none. Hogs: 500. Barrows and gilts unevenly steady. Percent Lean Weight Price 47 - 50 220-270 lbs 36.50-37.25 Sows: 300-450 lbs .50 lower, 450-700 lbs steady. US 1-3 300-450 lbs 33.00 450-500 lbs 36.00 500-550 lbs 39.00 550-700 lbs 40.00 Boars: 300-700 lbs 18.00, 200-300 lbs 28.00.  