Age at breeding

1.99

75.21

<0.0001

0.4260

Age at conception

1.99

76.80

<0.0001

0.4312

Enterprise type

1.99

1.74

0.1905

0.0073

Calving pattern

3.97

6.19

0.0007

0.1348

Breed

5.98

3.39

0.0073

0.1068

Region

9.91

1.66

0.1102

0.0561

Herd size

4.96

1.85

0.1256

0.0329

Culling rate %

5.96

1.06

0.3856

0.0032

Calving rate %

5.95

2.71

0.0247

0.0788

Stillbirth rate %

4.96

1.31

0.2734

0.0121

First lactation yield

5.95

0.21

0.9575

−0.0411

Herd lactation yield

5.95

0.40

0.8500

−0.0311

bTB status

1.99

0.65

0.4231

0.0065

Days at grass

3.97

0.95

0.4181

−0.0014