Table 1.
Composition and characteristics on a daily basis of the experimental diets fed to cow during dry and lactation periods.
| Dry Period | Lactation Period | |
|---|---|---|
| Item, %DM | ||
| Corn silage | 25.0 | 33.5 |
| Corn grain | - | 17.2 |
| Alfalfa hay | - | 15.3 |
| Grass hay | 51.6 | 3.5 |
| Soybean meal | 7.3 | 9.2 |
| Corn flakes | - | 7.4 |
| Sunflower meal | - | 2.4 |
| Corn gluten meal | - | 1.7 |
| Supplement 1 | 1.0 | 2.1 |
| Cotton seeds | - | 7.7 |
| Wheat straw | 15.3 | - |
| Chemical composition | ||
| NEL, Mcal/kg of DM | 1.36 | 1.54 |
| Crude protein, % DM | 12.50 | 16.00 |
| Starch + sugar, %DM | 12.50 | 29.80 |
| Ether extract, %DM | 2.70 | 4.50 |
| NDF, %DM | 54.9 | 33.70 |
1 42.9% Ca2PO4; 28.6% urea; 14.3% MgO; 7.1% NaCl; 7.1% mineral vitamin supplement. The supplement for dry cows was composited to provide 1,500,000 UI/kg of vitamin A, 150,000 IU/kg of vitamin D3, 7000 UI/kg of vitamin E, 1100 mg/kg of Mn, 4000 mg/kg of Zn, 500 mg/kg of Cu, 70 mg/kg of I, 10 mg/kg of Co and 23 mg/kg of Se. The supplement for lactating cows was composited to provide 150,000 UI of vitamin A, 10,000 IU of vitamin D3, 200 mg of vitamin E, 100 mg of vitamin K, 100 mg of vitamin H1, 50 mg of vitamin B1, 0.5 mg of vitamin B12, 500 mg of vitamin PP, 4000 mg of choline, 350 mg of Mn, 800 mg of Zn, 40 mg of Cu, 20 mg of I, 1 mg of Co and 1 mg Se.