Table 1.
Ingredients and chemical composition of the close-up diet
| Item, DM basis (except where noted) | Close-up diet |
|---|---|
| Ingredient (%) | |
| Corn silage | 39.7 |
| Grass hay | 27.9 |
| Canola meal | 10.0 |
| Soybean meal | 8.2 |
| Corn grain, finely ground | 4.1 |
| Acidified soybean meal1 | 2.9 |
| Soybean hulls, pelleted | 1.8 |
| Calcium carbonate | 1.5 |
| Calcium sulfate | 1.0 |
| Magnesium sulfate | 0.82 |
| Mineral product2 | 0.72 |
| Protein blend3 | 0.54 |
| Vitamin and trace mineral supplement4 | 0.32 |
| Dicalcium phosphate | 0.29 |
| Tallow | 0.21 |
| Magnesium oxide | 0.071 |
| Rumen-protected methionine5 | 0.034 |
| Nutrient (mean ± SD) | |
| NEL (Mcal/kg) | 1.44 ± 0.033 |
| CP (%) | 13.2 ± 1.4 |
| MP (g/d; model estimate) | 1,218 |
| Metabolizable Met6 (g/d; model estimate) | 29 |
| NDF (%) | 43.5 ± 3.4 |
| ADF (%) | 29.2 ± 2.02 |
| Lignin (%) | 5.0 ± 0.32 |
| Starch (%) | 16.9 ± 1.03 |
| Ether extract (%) | 3.1 ± 0.12 |
| Ash (%) | 8.2 ± 0.18 |
| Ca (%) | 1.1 ± 0.11 |
| P (%) | 0.36 ± 0.033 |
| Mg (%) | 0.46 ± 0.038 |
| K (%) | 1.05 ± 0.019 |
| Na (%) | 0.20 ± 0.032 |
| Mn (mg/kg) | 80.2 ± 13.0 |
| Zn (mg/kg) | 62 ± 7.0 |
| Cu (mg/kg) | 13 ± 3.0 |
| Fe (mg/kg) | 305 ± 31 |
| DCAD (mEq/kg) | −123 |
1
SoyChlor, Landus Cooperative.
2
Min-Ad Inc.
3
Caledonia Pass, Caledonia Farmers Elevator Co.
4
The premix contained 30.5% Na, 7,567 mg/kg Zn, 3,888 mg/kg Mn, 961 mg/kg Cu, 105 mg/kg Co, 125 mg/kg I, 67 mg/kg Cr, 74 mg/kg Se, 1.93 kIU/g vitamin A, 1.11 kIU/g vitamin D3, and 29.66 IU/g vitamin E.
5
Smartamine M, Adisseo North America.
6
CPCNS model predictions included a Lys:Met ratio of 2.86 and a metabolizable Met:metabolizable energy ratio of 1.06 g/Mcal.