Table 3
Plasma post-prandial (5 h after intubation) and post-absorptive (24 h after intubation) lysine and ammonia concentrations (nmol/mL) of rainbow trout fed graded levels of dietary lysine¹

Dietary lysine level (%)	Plasma lysine concentrations		Plasma ammonia concentrations
Dietary lysine level (%)	Post-prandial values (PPlys)	Post-absorptive Values (PAlys)	Post-prandial Values (PPA)	Post-absorptive Values (PAA)
0.72	139^e	159^c	115^d	122
1.12	236^d	172^c	119^d	127
1.52	327^c	216^b	146^c	120
1.92	515^b	241^ab	152^c	129
2.32	631^a	275^a	234^b	119
2.72	651^a	258^ab	282^ab	115
3.52	605^a	280^a	301^a	124
Pooled SEM²	78.5	18.3	29.6	1.8