| Parameters | Group A | Group B | p-value (2-sided) |
| Age of cows (years) | 5 (3/6) | 4 (3/5) | 0.162 |
| Number of cows/farm | 19 (14/30) | 20 (15/28) | 0.895 |
| Yearly milk yield/cow (kg) | 6800 (6500/7000) | 6500 (6300/7000) | 0.181 |
| Duration of pregnancy (days) | 290.5 (286/295) | 291 (283/294) | 0.344 |
| Treatment p.p. (hours) | 20 (12/24) | 18 (12/24) | 0.862 |
| Calving to 1st insemin. (days) | 77 (58/104.5) | 82 (66.5/96) | 0.722 |
| Number of AI’s | 1 (1/2) | 1 (1/2) | 0.588 |
| Days open | 89 (65/128) | 96 (71/120) | 0.566 |