Table 5.

Apparent ileal digestibility

g CP/kg feed	80	160	240	SEM 1	P value 2
ProteinA	82.8°	86.5b	90.4c	0.06	0.001
Essential amino acids
ArginineA	62.3°	73.5b	84.1c	1.17	0.001
HistidineA	85.5°	89.0b	89.8b	0.71	0.05
LysineA	93.4°	94.5ab	96.1b	0.35	0.05
IsoleucineA	85.6°	89.3b	92.6c	0.39	0.001
LeucineA	88.7°	92.0b	95.1c	0.35	0.001
ValineA	85.7°	90.7b	93.1c	0.39	0.001
MethionineA	89.7a	93.3b	96.9c	0.42	0.001
PhenylalanineA	88.0°	92.0b	95.6c	0.38	0.001
ThreonineA	76.7°	80.2b	86.9b	0.78	0.001
Non essential amino acids
AlanineA	65.5°	74.9b	84.0c	1.09	0.001
Aspartic acidA	79.5°	83.9b	90.0c	0.72	0.001
CystineA	51.4a	72.3b	79.5b	4.26	0.01
Glutamic acidA	88.1°	89.8a	93.4b	0.55	0.01
GlycineA	47.7a	69.7b	79.3c	1.23	0.001
ProlineA	87.1a	91.7b	93.6b	0.49	0.001
SerineA	78.1°	82.5b	87.5c	0.73	0.001
TyrosineA	88.8a	92.1b	95.7c	0.37	0.001

¹ Standard Error of the Mean.

^2abc Means with different superscript differ at probability level show in the fifth column.

^A Linear effect (P < 0.001).