|
| All cows1 | Participants2 | ||
|
| Control | Test | Control | Test |
| Number of cows | 303 | 267 | 184 | 146 |
| Days in milk | 143 | 145 | 146 | 151 |
| Milk yield, kg | 50.1 | 50.9 | 53.0 | 53.4 |