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Table 5 Means, standard deviations and percent variation coefficients of lesion detection achieved by the official veterinarians performing traditional inspection and by the contracted veterinaries performing visual-only inspection in the comparison period

From: Development and test of a visual-only meat inspection system for heavy pigs in Northern Italy

 

Official veterinarians

Contracted veterinarians

 

mean

st. dev.

v. c.

mean

st. dev.

v. c.

δ over official

Pneumonia

5.82

4.39

75.57

4.69

3.83

81.66

6.09

Pleuropneumonia

10.70

2.86

26.76

17.29

1.78

10.31

−16.45

Hepatitis

14.96

8.80

58.83

14.56

2.81

19.26

−39.56

Hepatosis/hepato-dystrophies

0.00

0.00

300.00

1.36

2.17

159.73

−140.27

Peritonitis/perihepatitis

0.11

0.26

239.75

0.20

0.17

83.45

−156.30

Enteritis

0.04

0.07

181.11

0.38

0.22

59.68

−121.43

Nephritis

0.05

0.06

123.58

0.26

0.15

59.44

−64.15

Nephrosis

0.21

0.32

152.40

0.55

0.25

45.50

−106.91

Cryptorchidism

0.06

0.09

161.92

0.30

0.06

20.80

−141.13

Myocarditis

0.00

0.00

300.00

0.01

0.02

113.93

−186.07

Pericarditis

1.81

1.20

66.13

2.71

0.50

18.61

−47.52

Dermatitis

0.80

1.65

205.77

1.97

1.11

56.40

−149.37

Erysipelas

0.39

0.32

82.58

0.71

0.68

96.10

13.52

Arthritis

0.00

0.00

0.00

0.00

0.00

0.00

0.00

Muscle colour alteration (PSE/DFD)

0.00

0.00

0.00

0.01

0.01

115.72

115.72

Oedema/emaciation

0.01

0.01

217.58

0.01

0.01

120.94

−96.64

Jaundice

0.01

0.01

198.29

0.03

0.03

96.50

−101.79

Abscesses

0.97

0.55

56.44

1.09

0.35

31.87

−24.57

Neoplasms / tumours

0.02

0.05

254.11

0.04

0.08

200.00

−54.11

Biliary or faecal contamination

1.96

0.64

32.94

3.10

0.88

28.44

−4.50

Trauma

0.10

0.21

205.51

1.58

1.13

71.25

−134.26

Lymphadenopathy

0.01

0.02

198.62

0.06

0.04

62.70

−135.92

Splenomegaly

0.14

0.19

135.20

0.46

0.24

50.97

−84.24

Petechial haemorrhages

0.00

0.00

300.00

0.00

0.00

0.00

−300.00

Total

38.15

16.30

42.71

51.37

5.51

10.73

−31.98

  1. Nine official veterinarians conducted inspections during the study, but two of these veterinarians were excluded in this evaluation since they inspected less than 1000 carcasses