Table 1.

Composition and nutrient levels of the diets (DM basis).

Item	Treatment group1
	SBM	SBM-CSP	CSP	SBM-DRM	DRM	CSP-DRM
Ingredient, %
Corn	62.640	65.000	67.000	58.000	56.600	63.100
SBM, 44.82% CP	25.000	11.760		12.840
CSP, 52.73% CP		10.000	18.700			9.920
DRM, 38.73% CP				14.870	29.200	13.52
Soybean oil	0.020	0.980	0.670	1.350	1.820	0.900
L-Lys HCl, 78%	0.041	0.300	0.533	0.141	0.265	0.409
DL-Met, 98%	0.167	0.186	0.203	0.146	0.126	0.166
L-Trp, 99%	0.006	0.024	0.042	0.013	0.025	0.034
L-Thr, 98%	0.032	0.129	0.217	0.050	0.078	0.152
L-Ile, 99%	0.025	0.156	0.275	0.089	0.163	0.221
L-Val, 99%	0.011	0.099	0.182	0.040	0.080	0.133
L-Cys, 99%	0.149	0.161	0.174	0.100	0.059	0.120
Arg, 99%					0.082
CaHPO4	1.000	1.000	1.000	1.000	1.000	1.000
Limestone	9.070	9.090	9.100	8.900	8.750	8.940
NaCl	0.300	0.300	0.300	0.300	0.300	0.300
Zeolite powder	0.969	0.245	1.034	1.591	0.882	0.515
Premix2	0.570	0.570	0.570	0.570	0.570	0.570
Total	100.000	100.000	100.000	100.000	100.000	100.000
Nutrient levels3, %
ME, MJ/kg	11.11	11.11	11.11	11.11	11.11	11.11
CP	16.52	16.53	16.47	16.53	16.48	16.49
EE	1.07	2.02	1.47	2.25	3.54	1.86
Calcium	3.45	3.46	3.47	3.45	3.49	3.45
Non-phytate phosphorus	0.41	0.39	0.38	0.39	0.38	0.39
SID Lys	0.813	0.813	0.813	0.813	0.813	0.813
SID Met	0.407	0.407	0.407	0.407	0.407	0.407
SID Met + Cys	0.741	0.741	0.741	0.741	0.741	0.741
SID Ile	0.651	0.651	0.651	0.651	0.651	0.651
SID Thr	0.570	0.570	0.570	0.570	0.570	0.570
SID Trp	0.171	0.171	0.171	0.171	0.171	0.171
SID Val	0.716	0.716	0.716	0.716	0.716	0.716
SID Arg	1.014	1.136	1.234	0.899	0.846	1.013
SID His	0.440	0.399	0.361	0.412	0.379	0.370
SID Leu	1.342	1.165	1.003	1.250	1.155	1.079
SID Cys	0.336	0.225	0.216	0.266	0.296	0.254
SID Phe	0.717	0.683	0.649	0.640	0.552	0.604
Free gossypol, mg/kg		30.25	56.57			30.01
Isothiocyanate, mg/kg				ND	ND	ND
Oxazolidine thioketone, mg/g				0.050	0.099	0.046

ME = metabolizable energy; SID = standardized ileal digestible; ND = not detected.

¹The dietary types included soybean meal (SBM), cottonseed protein (CSP), double-zero rapeseed meal (DRM) individually or in combination with equal crude protein (SBM-CSP, SBM-DRM, and CSP-DRM) as the protein ingredient(s).

²Provided per kilogram of diet: vitamin A, 12,500 IU; vitamin D₃, 4,125 IU; vitamin E, 15 IU; vitamin K, 2 mg; vitamin B₁, 0.98 mg; vitamin B₂, 8.5 mg; calcium pantothenate, 50 mg; niacin 32.5 mg; pyridoxine, 8 mg; biotin, 2 mg; folic acid 5 mg; vitamin B₁₂, 5 mg; copper, 8 mg; iodine, 1 mg; iron, 60 mg; selenium, 0.3 mg; manganese, 65 mg; zinc, 66 mg; choline, 0.5 g; phytase, 0.5 g; yeast culture, 2.0 g.

³The levels of CP, EE and calcium were analyzed values and others were calculated values.