Table 2 Comparison of nursing behaviour, carefulness score, and lying-down events between sows with normal litters (NORMAL) and large litters (LARGE)¹

Total nursing behaviour

 Frequency

35.8

30.7

1.1

0.035

 Duration (min)

232.4

180.4

8.4

< 0.01

 Bout duration (min)²

6.5

5.9

0.2

0.115

 Sow-terminated nursing, (%)

25.5

40.2

3.5

0.039

Successful nursing behaviour

 Frequency

23.8

19.5

0.8

0.033

 Duration (min)

162.1

122.1

6.8

< 0.01

 Bout duration (min) ²

6.8

6.3

0.2

0.344

Carefulness score (0–5)³

3.4

2.8

0.1

< 0.01

Lying-down event (n)

8.7

8.5

1.4

0.901