Group

Intercept

Slope yield

P Level

Slope DIM

P Level

R²

All cows

4.047

0.923

<0.001

−0.0063

<0.001

0.797

First lactation

4.616

0.882

<0.001

−0.0026

<0.001

0.723

Mature cows

5.042

0.918

<0.001

−0.0083

<0.001

0.803