and divided within gender into heavy and light BW. One heavy and one light barrow and gilt were randomly placed into one of 60 pens, for 4 pigs per pen. After weaning, pigs were fed sequentially commercial phase 1 [241 g CP/kg, 11.1 MJ NE/kg, 16.4 g SID Lysine (Lys)/kg] and Phase 2 (203 g CP/kg, 11.0 MJ NE/kg, 12.4 g SID Lys/kg) diets for 2 and 5 days, respectively. Wheat, soybean meal, oats, and lactose and other highly digestible protein sources were included in these diets.