Table 5 Estimates of the effects of the factors studied on feed conversion ratio in 683 batches from 93 grow-finishing pig farms

Intercept

–

1.43 (0.10)

1.23

1.62

< 0.001

N^o pigs per pen

< 20

2.40

−0.05 (0.01)

−0.07

−0.03

< 0.001

> 20

2.45

0

–

–

–

Type of feeder

Others (linear dump)

2.41

−0.03 (0.01)

−0.06

−0.00

0.04

Conical semiautomatic

2.44

0

–

–

–

ORIGSEX

SPU/barrows

2.43

−0.02 (0.01)

−0.03

0.00

0.09

SPU/females

2.40

−0.05 (0.01)

−0.07

−0.03

< 0.001

SPU/mixed

2.42

−0.03 (0.01)

−0.04

−0.01

< 0.001

Farrow-to-finish/mixed

2.44

0

–

–

–

IW

–

0.035 (0.002)

0.03

0.04

< 0.001

FW

–

−0.01 (0.00)

−0.01

−0.01

< 0.001

DGF

–

0.015 (0.001)

0.01

0.02

< 0.001