IA State Univ. Report 2012: Feed Efficiency in Nursery Pigs is Maximized When Additional Lys is Supplied by L-LysHCl Instead of Intact Protein, but not Affected by Differing NEAA Nitrogen Sources

Two 14-d experiments were conducted using 540 and 450 pigs to determine the Lys requirement for 7 to 16 kg pigs when feeding a variety of synthetic amino acid concentrations, intact protein concentrations, or diets with low protein concentrations. Pigs were weighed 7d after the completion of the experiments (d 21) to determine the carryover effects of treatment diets.