Table 1.
Ingredients and chemical composition of postpartum TMR diet fed to Holstein dairy cows
| Ingredient composition, % of DM | |
|---|---|
| Alfalfa hay1 | 21.32 |
| Corn silage1 | 15.64 |
| Whole cottonseed | 6.15 |
| Beet pulp | 4.93 |
| Ground barley grain | 10.32 |
| Ground corn grain | 10.31 |
| Soybean meal | 14.06 |
| Wheat bran | 10.43 |
| Molasses | 3.05 |
| Megalac2 | 1.18 |
| Vitamin–mineral premix3 | 0.79 |
| Sodium bicarbonate | 0.61 |
| Oyster shell | 0.63 |
| Di-calcium phosphate | 0.59 |
| Chemical composition, % of DM | |
| DM, % | 70.2 |
| Organic matter | 93.1 |
| CP | 16.5 |
| Non-fibrous carbohydrate (NFC)4 | 38.8 |
| Neutral detergent fiber (NDF) | 32.9 |
| Ether-extract (EE) | 4.9 |
| Ash | 6.9 |
| Ca5 | 0.97 |
| P5 | 0.55 |
| NEL,5 Mcal/kg of DM | 1.64 |
1Alfalfa hay and corn silage contained: 17.34% and 7.12% CP, 44.88% and 55.28% NDF, 32.73 and 34.11 acid detergent fiber, respectively.
2The product contained: 17.4 g/100g FA of palmitic acid (C16:0), 2.1 g/100 g FA of stearic acid (C18:0), 33.6 g/100 g FA of oleic acid (C18:1), 30.5 g/100 g FA of linoleic acid (C18:2), and 2.4 g/100 g FA of linolenic acid (C18:3).
3Vitamin–mineral premix contained (DM basis) 1,00,000 IU/kg of vitamin A; 360,000 IU/kg of vitamin D3; 15,000 IU/kg of vitamin E; 10 g/kg of Mn; 16 g/kg of Zn; 4 g/kg of Cu; 0.15 g/kg of I; 0.12 g/kg of Co; 0.8 g/kg of Fe; and 0.08 mg/kg of Se.
4NFC = 100 − (CP + NDF + EE + ash).
5Calculated from NRC (2001).