Table 9 Estimates of fixed factors and random effect variance included in the final models^a for farrowing rate and for weaning-to-first-mating interval of served females

Intercept

1.45 (0.08)

<  0.01

5.67 (0.16)

<  0.01

Farm groups^d

<  0.01

0.45

 High-performing farms

0.63 (0.08)

- 0.28 (0.22)

 Intermediate-performing farms

0.28 (0.07)

- 0.10 (0.19)

Parity groups (Py)

< 0.01

< 0.01

 0

0.18 (0.06)

–

 1

- 0.32 (0.06)

1.65 (0.03)

 2

- 0.05 (0.06)

0.50 (0.03)

 3

0.03 (0.07)

0.37 (0.03)

 4

0.07 (0.07)

0.21 (0.03)

 5

0.03 (0.07)

0.09 (0.03)

Sow groups^e

< 0.01

0.58

 High-prolific sows

- 0.15 (0.07)

- 0.03 (0.04)

 Intermediate-prolific sows

- 0.03 (0.06)

- 0.03 (0.02)

Py x Sow groups

< 0.01

–

 Py 0 x High-prolific sows

0.20 (0.08)

–

 Py 0 x I-prolific sows

0.20 (0.07)

–

 Py 1 x High-prolific sows

0.39 (0.08)

–

 Py 1 x Intermediate-prolific sows

0.21 (0.07)

–

 Py 2 x High-prolific sows

0.37 (0.09)

–

 Py 2 x Intermediate-prolific sows

0.23 (0.07)

–

 Py 3 x High-prolific sows

0.24 (0.09)

–

 Py 3 x Intermediate-prolific sows

0.11 (0.07)

–

 Py 4 x High-prolific sows

0.14 (0.09)

–

 Py 4 x Intermediate-prolific sows

0.04 (0.07)

–

 Py 5 x High-prolific sows

0.09 (0.09)

–

 Py 5 x Intermediate-prolific sows

0.04 (0.08)

–

Intercept variance at farm level

0.07 (0.01)

–

0.59 (0.09)

–

Intercept variance at sow level

0.03 (0.01)

–

0.07 (0.01)

–

ICC (records within the same farm), %

2.2

–

2.9

–

ICC (records within the same sow), %

3.2

–

3.2

–