At the plateaus, PD was
determined by lysine intake. When lysine intake determined
PD, lysine utilization did not decline (P > 0.10)
with increasing lysine intake. Based on the N balance
study, there was no effect (P > 0.1) of LW on lysine
utilization. The marginal efficiency of using absorbed
available lysine for PD was 0.75 and was not affected
by LW, MEI, or IDLys