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

Items Lactation
 CON1) CM1 CM2
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
 Magnesium oxide 0.02 - -
 Salt 0.50 0.50 0.50
 Threonine (100%) 0.05 0.05 0.05
 L-Lysine (78%) 0.30 0.3 0.3
 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
 Metabolizable energy (kcal/kg) 3,300 3,300 3,300
Analyzed composition
 DM 88.80 88.1 89.00
 Dry matter 3,60 3,59 3,61
 Gross energy 16.30 16.50 16.40
 Crude protein 5.76 5.81 5.64
 Calcium 0.74 0.75 0.60
 Phosphorous 0.51 0.53 0.56
 Magnesium 0.25 0.25 0.25
 Lysine 0.92 0.90 0.89
 Methionine 0.20 0.23 0.21
CON, basal diet; CM1, basal diet – MgO - 0.3% limestone + 0.40% marine derived Ca-Mg complex; CM2, 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).