Table 1 Ambient temperature and percentage of relative humidity during periods D9-D30 and D31-D50 and PEN prevalence and severity at the end of these periods in both batches and both rooms of the experiment

Temperature (°C)

Batch 1

26 ± 0.4

26.5 ± 0.4

26.0 ± 0.2

26.2 ± 1.1

Batch 2

27.4 ± 0.6

27 ± 0.6

26.9 ± 0.8

26.5 ± 0.7

Relative humidity (%)

Batch 1

52.1 ± 4.4

52.9 ± 5.1

59.8 ± 3.4

61.1 ± 4.3

Batch 2

63.7 ± 4.2

63.7 ± 3.9

63.8 ± 4.9

64.3 ± 5.1

Pigs affected by PEN (%)

Batch 1

67 ± 21

59 ± 19

76 ± 15

63 ± 27

Batch 2

60 ± 27

62 ± 20

47 ± 19

58 ± 21

PEN score

Batch 1

0.95 ± 0.40

0.89 ± 0.56

1.11 ± 0.28

0.90 ± 0.42

Batch 2

0.88 ± 0.48

0.95 ± 0.45

0.57 ± 0.52

0.87 ± 0.43