Table 1. Ingredients and chemical composition of pregnant cow experimental diets (As-fed basis)

Item Concentrate Ⅰ Concentrate Ⅱ Rice straw
Ingredient composition (%) 100.00 100.00
 Corn grain 13.12 15.43
 Wheat grain 12.00 15.00
 Cane molasses 3.00 4.00
 Cassava residue 2.00 -
 Wheat flour 6.00 10.00
 Wheat bran 11.70 -
 Corn gluten feed 20.99 23.00
 Soybean 3.65 9.80
 Sunflower seed - 6.00
 Rapeseed 7.00 6.00
 Corn germ 3.00 -
 Palm kernel 9.00 -
 Corn-DDGS 4.00 6.00
 Salt dehydrated 0.60 0.80
 Limestone 2.20 2.82
 Vit premix1) 0.15 -
 Min premix2) 0.30 -
 Beta-Carotene 0.05 0.05
 Other 1.24 1.10
Chemical composition (%)
 TDN 70.13 72.75 41.51
 Dry matter 88.55 88.29 93.65
 Crude protein 14.08 18.15 4.08
 Ether extract 2.90 2.66 1.85
 Crude fiber 6.74 6.61 32.01
 Ca 1.17 1.21 0.24
 P 0.50 0.49 0.14
 Crude ash 6.55 6.77 11.42
Vitamin premix provided the following quantities of vitamins per kilogram of the diet: vitamin A, 10,000 IU; vitamin D3, 1,500 IU; vitamin E, 25 IU.
Mineral premix provided the following quantities of minerals per kilogram of the diet: Fe, 50 mg; Cu, 7mg; Zn, 30 mg; Mn, 24 mg; I, 0.6 mg; Co, 0.15 mg; Se, 0.15 mg.
DDGS, dried distiller’s grains with solubles; TDN, total digestible nutrients (calculated value).