| Dry period (week 3 a.p. – calving) | Lactation (calving – week 7 p.p.) |
---|---|---|
Component, % of DM | ||
 Corn silage | 37.8 | 18.3 |
 Grass silage | 37.7 | 24.4 |
 Concentrate1 | 14.1 | 34.6 |
 Hay | 6.9 | 4.1 |
 Straw | 2.3 | 2.8 |
 Pressed sugar beet pulp | – | 14.5 |
 Urea | 0.5 | – |
 Vitamin and mineral premix2 | 0.8 | – |
 Fat | – | 0.9 |
 Sodium hydrogen carbonate | – | 0.4 |
Energy and nutrient contents | ||
 Net energy for lactation, MJ/kg DM | 6.4 | 7.0 |
 Crude fibre, % of DM | 20.6 | 17.5 |
 NDF, % of DM | 38.2 | 33.3 |
 ADF, % of DM | 22.3 | 21.0 |
 Crude protein, % of DM | 13.2 | 17.1 |
 Available crude protein, % of DM3 | 13.8 | 15.7 |
 Ruminal N balance, g/kg3,4 | −1.0 | 2.3 |