Table 2 Descriptive statistics of the continuous variables and their association to the gastric ulcers prevalence in pig herds

Environmental factors

Number of animals in the farm

71

11,654

973

14,059

-0.37

0.002

Number of animals in the pen

71

25

25

550

-0.19

0.105

Production parameters

Feeding days

70

87

61

118

-0.10

0.425

Mortality (%)

70

3.08

1.18

5.60

0.17

0.165

Average daily weight gain (g)

71

916

658

1116

0.01

0.960

Feed energy per kg (MJ)

71

2.85

2.40

3.39

0.18

0.123

Average entry weight (kg)

71

28.37

19.50

51.50

0.24

0.047

Live weight at slaughter (kg)

70

108.40

96.30

117.08

0.08

0.524