Table 1.

Composition of experimental diets.

Items	Defatted Rice Bran (DFRB), %
	0	7	14	21	28
Ingredients (%)
Corn	68.61	62.00	55.00	48.00	41.00
Wheat bran	15.40	15.80	16.15	16.67	17.21
DFRB	0.00	7.00	14.00	21.00	28.00
Soybean meal	13.30	11.70	10.40	8.95	7.50
Soybean oil	0.00	0.84	1.83	2.78	3.74
98.5% Lysine	0.03	0.04	0.03	0.03	0.03
Salt (NaCl)	0.30	0.30	0.30	0.30	0.30
Limestone	0.82	0.85	0.85	0.85	0.85
CaHPO4	0.75	0.68	0.65	0.63	0.58
60% Choline chloride	0.04	0.04	0.04	0.04	0.04
Premix 1	0.40	0.40	0.40	0.40	0.40
Measured composition 2
Dry matter (DM, %)	88.56	88.68	88.93	89.16	88.46
Crude protein (CP, %)	15.60	16.67	16.13	15.73	16.40
Crude fiber (CF, %)	4.38	4.72	5.06	5.38	5.58
Insoluble detergent fiber (IDF, %)	16.14	17.19	18.42	19.32	23.37
Soluble detergent fiber (SDF, %)	0.52	0.56	0.68	0.73	0.82
Acid detergent fiber (ADF, %)	5.53	6.25	6.53	7.08	8.13
Neutral detergent fiber (NDF, %)	8.89	11.80	12.93	14.35	17.94
Ether extract (EE, %)	5.19	5.08	5.32	5.27	5.38
Hemicellulose (%)	3.80	5.69	7.09	8.00	10.34
Cellulose (%)	4.06	4.43	4.71	5.09	5.79
Acid detergent lignin (ADL, %)	0.46	0.54	0.72	0.96	1.13
Calculated composition 2
Metabolic energy (MJ, %)	12.13	12.13	12.22	12.27	12.31
Calcium (%)	0.55	0.55	0.55	0.55	0.55
Available phosphorus (%)	0.27	0.27	0.27	0.27	0.27
L-lysine (%)	0.65	0.65	0.65	0.66	0.65
Methionine + cystine (%)	0.45	0.45	0.46	0.47	0.47
Total detergent fiber (TDF, %)	16.70	17.75	19.10	20.05	24.11

¹ The premix provided the following per kg of diets: vitamin A 8000 international unit (IU), vitamin D3 1500 IU, vitamin E 100 mg, vitamin K3 4 mg, vitamin B1 2 mg, vitamin B2 8 mg, vitamin B6 3 mg, vitamin B12 0.04 mg, niacin 30 mg, pantothenic acid 35 mg, folic acid 0.6 mg, biotin 0.13 mg, choline 150 mg, Fe 60 mg, Cu 5 mg, Zn 60 mg, Mn 10 mg, Se 0.15 mg, I 0.1 mg. ² DM, CP, CF, IDF, SDF, ADF, NDF, EE, hemicellulose, cellulose, and ADL were measured values, whereas the other nutrient levels were calculated values.