SIOUX CITY, Iowa, May 24 (UPI) -- Monday's closing Sioux City Livestock report: Cattle (Monday only): 300 Trade moderately active. Compared to last Monday, slaughter steers and heifers mostly steady. Slaughter Steers: Select to mostly Choice 2-3, 1100-1325 lbs 61.00- 61.85, few drug free 66.00. Few Select 2-3, 1211 lbs 60.85, drug free 64.00. Slaughter Heifers: Select and Choice 2-3, 1025-1300 lbs 60.25-61.75, few drug free 66.75. Few Select 2-3, 1138 lbs 59.50. Hogs: 500 Barrows and gilts .75 lower. Percent Lean Weight Price 47 - 50 220-270 lbs 36.00-36.50 Sows: Steady to 1.00 higher. US 1-3 300-450 lbs 33.50-34.00 450-500 lbs 37.00 500-550 lbs 39.00 550-700 lbs 41.00  