Group | Intercept | Slope yield | P Level | Slope DIM | P Level | R2 |
All cows | 0.351 | 0.788 | <0.001 | −0.0004 | <0.001 | 0.596 |
First lactation | 0.326 | 0.752 | <0.001 | −0.00015 | <0.001 | 0.496 |
Mature cows | 0.402 | 0.772 | <0.001 | −0.0005 | <0.001 | 0.594 |