Table 3.
Body weight, number of litters, and lactation performance of lactating dairy cows.
| Cows | Weight | Lactation | Milk kg/y | Lactation days | Milk/d | Fat % | Protein % | Lactose % |
|---|---|---|---|---|---|---|---|---|
| 145,757 | 563 | 3 | 8,415 | 169 | 29.5 | 4.3 | 2.8 | 5.2 |
| 140,512 | 570 | 3 | 7,482 | 169 | 28.8 | 3.8 | 3.2 | 5.2 |
| 140,523 | 538 | 3 | 7,306 | 173 | 29.1 | 4.2 | 3.3 | 5.4 |
| 140,993 | 559 | 3 | 7,429 | 177 | 29.2 | 3.6 | 2.9 | 5.3 |
| 140,851 | 573 | 3 | 8,799 | 178 | 29.1 | 4.0 | 3.7 | 5.3 |
| 140,373 | 598 | 3 | 10,961 | 183 | 29.6 | 4.8 | 3.0 | 5.4 |
| Mean | 566.8 | 3.0 | 8,398.7 | 174.8 | 29.2 | 4.1 | 3.2 | 5.3 |
| SD | 19.6 | 0.0 | 1,392.9 | 5.5 | 0.3 | 0.4 | 0.3 | 0.1 |