Group

Intercept

Slope

R²

P Level

Control

All cows

37.77

−0.034

0.143

<0.001

First lactation

32.18

−0.016

0.068

<0.001

Mature cows

39.97

−0.042

0.177

<0.001

Test

All cows

39.27

−0.038

0.154

<0.001

First lactation

33.02

−0.017

0.069

<0.001

Mature cows

41.74

−0.047

0.195

<0.001