Table 3. The effects of CP and AA level on nutrient digestibility in growing pigs.

Variable	CP (%)				SEM	p-value
	17.2	15.7
		Lysine (%)
	1.10	1.10	1.15	1.20
Phase 1 (d 14)
DM	84.50	85.00	83.98	84.85	0.85	0.652
ME	80.22	79.71	79.12	79.50	0.71	0.494
CP	80.07	79.51	78.44	80.48	1.41	0.524
Phase 2 (d 28)
DM	84.36	84.24	83.39	84.21	0.65	0.443
ME	79.24	79.52	78.47	79.36	1.12	0.794
CP	79.48	78.21	79.17	79.29	1.64	0.867
Phase 3 (d 42)
DM	83.98	83.52	83.07	83.79	0.69	0.589
ME	78.78	78.30	78.04	79.01	1.08	0.801
CP	78.42	78.39	78.10	78.40	1.54	0.996

CP, crude protein; AA, amino acid; DM, dry matter; ME, metabolizable energy.