Summary
Under feeding lysine (CP) results in no improvement in ADG or Final BW and about 2/3 the improvement in carcass characteristics
Phase Feeding allows for maximal response with minimal feed costs (esp. with 4 week program)
Two phase program most feasible, 1.1 G, 1.0 B followed by .9 G, .8 B % Lysine
Constant level of 18%CP (.97% lysine) did provide nearly similar overall growth and intermediate carcass characteristics