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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