Table 2 Effects of high-grain diet (HG) or conventional diet (CON) on milk yield and composition of dairy cows1
Item | CON | HG | P-value |
|---|---|---|---|
Milk yield, kg/d | 14.53 ± 2.99 | 17.91 ± 1.54 | 0.338 |
DMI, kg/d | 22.19 ± 1.17 | 23.69 ± 1.43 | 0.436 |
Milk fat, % | 4.49 ± 0.15 | 3.92 ± 0.14 | 0.001 |
Milk protein, % | 3.85 ± 0.17 | 4.13 ± 0.08 | 0.049 |
Milk lactose, % | 4.96 ± 0.05 | 4.94 ± 0.08 | 0.747 |
Total solid, % | 13.69 ± 0.25 | 13.34 ± 0.19 | 0.135 |
Somatic cell count, ×10 cells/mL | 189.50 ± 76.86 | 212.58 ± 70.25 | 0.758 |
Urea nitrogen, mg/dL | 17.95 ± 0.34 | 18.82 ± 0.45 | 0.105 |