Table 2. Ingredient composition of experimental lactation diets (as-fed basis)

Items	Lactation
	CON1)	0.3LC	0.7LC
Ingredients (%)
Corn	41.08	40.94	41.19
Soybean meal (48%)	4.02	4.03	3.96
Soybean oil	3.21	3.26	3.08
Dehulled Soybean meal	12.96	12.96	12.96
Wheat	23.00	23.00	23.00
Wheat bran	8.31	8.31	8.31
Rice bran	2.00	2.00	2.00
Molasses	2.00	2.00	2.40
Mono-calcium phosphate	0.59	0.59	0.59
Limestone	1.43	1.13	0.73
MgO	0.02	-	-
Salt	0.50	0.50	0.50
Threonine (100%)	0.05	0.05	0.05
L-Lysine (78%)	0.30	0.30	0.30
Vitamin / mineral premix2)	0.40	0.40	0.40
Choline (25%)	0.12	0.12	0.12
Phytase	0.01	0.01	0.01
Ca-Mg complex	-	0.40	0.40
Calculated composition
ME (kcal/kg)	3,300	3,300	3,300
Analyzed composition (%)
DM	88.8	88.1	89.0
CP	16.3	16.5	16.4
Fat	5.76	5.81	5.64
Ca	0.74	0.75	0.60
P	0.51	0.53	0.56
Mg	0.25	0.25	0.25
Lys	0.92	0.90	0.89
Met	0.20	0.23	0.21

CON, Basal diet; 0.3LC, Basal diet - MgO - 0.3% limestone + 0.40% marine-derived Ca-Mg complex ; 0.7LC, basal diet - MgO - 0.7% limestone + 0.40% marine-derived Ca-Mg complex.
Provided per kg of complete diet: 16,800 IU vitamin A; 2,400 IU vitamin D₃; 108 mg vitamin E; 7.2 mg vitamin K; 18 mg riboflavin; 80.4 mg niacin; 2.64 mg thiamine; 45.6 mg D-pantothenic; 0.06 mg cobalamine; 12 mg Cu (as CuSO4); 60 mg Zn (as ZnSO₄); 24 mg Mn (as MnSO₄); 0.6 mg I (as Ca(IO₃)₂); 0.36 mg Se (as Na₂SeO₃).
ME, metabolizable energy; DM, dry matter; CP, crude protein; Lys, lysine; Met, methionine.