Table 6.

The effects of lowering dietary crude protein and adding synthetic amino acids on nutrient excretion

	Diet			MSE	P Values
	Control	1X	2X		Diet	Lin	Quad
Nursery wet volume (L)	7.01	6.82	6.81	1.7083	0.9683	0.8235	0.9087
Nursery dry matter (g)	400.29	438.35	404.64	78.9056	0.5806	0.9130	0.3054
Nursery ash (g)	70.62	71.33	67.32	8.3065	0.5958	0.4362	0.5184
Nursery total P (g)	7.19	7.14	9.12	4.3463	0.5916	0.3857	0.5949
Nursery AmmN (g)	19.09a	15.91b	12.25c	1.9641	<0.0001	<0.0001	0.7803
Nursery total N (g)	35.68	31.56	29.19	6.0123	0.1168	0.0428	0.7401
G/F Wet volume (L)	7.85	7.43	6.82	1.2183	0.2557	0.1044	0.8583
GF Dry matter (g)	264.78ab	254.54b	301.33a	37.1976	0.0488	0.0627	0.0912
G/F ash (g)	82.86a	78.30ab	73.93b	5.5908	0.0157	0.0044	0.9691
G/F total P (g)	9.85	9.83	8.84	1.2669	0.2169	0.1144	0.6993
G.F AmmN (g)	39.62a	31.64b	22.22c	2.0132	<0.0001	<0.0001	0.4192
G/F total N (g)	40.75a	32.81b	24.79c	3.3085	<0.0001	<0.0001	0.9784
Overall wet volume (L)	7.70	7.32	6.80	1.1523	0.3107	0.1324	0.8835
Total dry matter (g)	368.69	308.90	350.37	76.6574	0.2994	0.6375	0.1421
Total ash (g)	87.172a	79.35b	73.57b	7.2894	0.0046	0.0012	0.7485
Overall Total P (g)	5.61	5.42	4.94	0.8212	0.2610	0.1282	0.3866
Overall AmmN (g)	32.26a	27.81ab	23.20b	4.5014	0.0025	0.0006	0.9674
Overall total N (g)	38.40a	33.89b	29.01c	4.1894	0.0009	0.0002	0.9199
Manure vol. (L/kg ADG)	7.70	7.32	6.80	1.1523	0.3107	0.1324	0.8835
Dry matter (g/kg ADG)	368.69	308.90	350.37	76.6574	0.2994	0.6375	0.1421
Ash (g/kg ADG)	87.172a	79.35b	73.57b	7.2894	0.0046	0.0012	0.7485
P (g/kg ADG)	5.61	5.42	4.94	0.8212	0.2610	0.1282	0.3866
AmmN (g/kg ADG)	32.26a	27.81ab	23.20b	4.5014	0.0025	0.0006	0.9674
Total N (g/kg ADG)	38.40a	33.89b	29.01c	4.1894	0.0009	0.0002	0.9199

Values with different superscripts, within a row are different (P < 0.05).