Table 2.

Composition and nutrient levels in the basal diets (dry matter basis).

Ingredients and analysis	Starting diet	PC diet		LND diet
	1–14 D	15–35 D	36–56 D	15–56 D
Ingredients, %
Maize	58.05	62.1	62.71	56.61
Soya oil	3	3	4.2	0
Soybean meal	34.8	23.48	17.01	0
DDGS	0	3	4	4
Wheat bran	0	2	4	26.6
Rapeseed meal	0	2.85	4.8	8.61
L-Lysine	0.08	0	0	0.2
DL-Methionine	0.145	0.13	0.09	0.1
L-Threonine	0.03	0	0	0.07
L-Tryptophan	0	0	0	0.12
Choline chloride	0.2	0.2	0.2	0.2
Sodium chloride	0.3	0.3	0.3	0.3
Mineral premix1	0.2	0.2	0.2	0.2
Vitamin premix2	0.03	0.03	0.03	0.03
Limestone	1.06	1.04	1.1	1
Dicalcium phosphate	1.75	1.6	1.25	1
Bentonite	0.355	0.07	0.11	0.96
Total	100	100	100	100
Calculated nutrient analysis, %
AME (MJ kg−1)	12.14	12.14	12.35	10.25
CP	20	17.5	16	13.28
ME/CP	145	166	184	184
Dig Lys, P%	1.02	0.76	0.65	0.53
Dig Met, P%	0.42	0.38	0.32	0.27
Calcium	0.9	0.85	0.8	0.71
Total-phytate P	0.65	0.65	0.61	0.76
Nonphytic acid P	0.42	0.4	0.35	0.35

Abbreviations: AME, apparent metabolizable energy; CP, crude protein; DDGS, distillers dried grains with soluble; Dig, digestibility; LND, low nutrient density; PC, standard nutrient density positive control.

¹Provided per kilogram of diet: Cu (CuSO₄∙5H₂O), 8 mg; Fe (FeSO₄∙7H₂O), 80 mg; Zn (ZnSO₄∙7H₂O), 90 mg; Mn (MnSO₄∙H₂O), 70 mg; Se (NaSeO₃), 0.3 mg; I (KI), 0.4 mg.

²Provided per kilogram of diet: NRC or NY/T vitamin premixes as shown in Table 1.