Table 5 Final mixed linear regression model for haemoglobin concentration at weaning

Intercept

135.1

8.1

Iron supplement

Yes

-8.6^a

4.2

0.042

No

0.0^b

Ref

Season

spring

-3.7

6.0

0.098

summer

0.0^a

Ref

autumn

-2.5

6.1

winter

-14.1

6.0

Parity

1

-2.8

2.7

0.315

2

0.0

Ref

3

0.6

2.7

4-

-3.1

2.7

Time of day, parturition

morning

2.9

5.9

0.090

day

-3.9

6.2

evening

-7.1

2.6

night

0.0

Ref

not known

-1.4

4.4

Gender

male

-2.5^a

1.2

0.036

female

0.0^b

Ref

Number of live born piglets

-0.3

0.3

0.284

Haemoglobin concentration at day 3 after birth

0.1

0.05

0.021