| Variable# | df | F | Prob > F | Adj R2 |
| Age at first calving | 1, 99 | 10.93 | 0.0013 | 0.0904 |
| Enterprise type | 1, 99 | 0.63 | 0.4297 | −0.0037 |
| Calving pattern | 3, 97 | 14.02 | <0.0001 | 0.2808 |
| Breed | 5, 95 | 2.47 | 0.0379 | 0.0684 |
| Region | 9, 91 | 1.88 | 0.0643 | 0.0736 |
| Herd size | 4, 96 | 4.73 | 0.0016 | 0.1297 |
| Culling rate % | 5, 95 | 1.03 | 0.4035 | 0.0016 |
| Calving rate % | 5, 95 | 0.97 | 0.4424 | −0.0017 |
| Stillbirth rate% | 4, 96 | 0.93 | 0.4508 | −0.0029 |
| First lactation yield | 5, 95 | 1.49 | 0.2002 | 0.0239 |
| Herd lactation yield | 5, 95 | 1.12 | 0.3556 | 0.0059 |
| bTB status | 1, 99 | 0.59 | 0.4451 | −0.0041 |
| Days at grass | 1, 99 | 76.63 | <0.0001 | 0.4306 |