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Table 4 Means, standard deviations and percent variation coefficients of lesion detection achieved by contracted veterinarians in the preliminary phase, when they inspected 5000 carcass each (not included in the global database), and the comparison period at the end of the study, after the guidelines were applied

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

  Preliminary period Final period  
mean st. dev. v. c. mean st. dev. v. c. Δ v.c.
after training
Pneumonia 8.58 8.88 103.52 4.69 3.83 81.66 −21.85
Pleuropneumonia 10.86 7.21 66.39 17.29 1.78 10.31 −56.08
Hepatitis 17.00 9.10 53.54 14.56 2.81 19.26 −34.28
Hepatosis/hepato-dystrophies 1.72 2.61 151.90 1.36 2.17 159.73 7.83
Peritonitis/perihepatitis 0.55 0.54 97.81 0.20 0.17 83.45 −14.36
Enteritis 0.30 0.27 90.53 0.38 0.22 59.68 −30.84
Nephritis 0.18 0.07 40.29 0.26 0.15 59.44 19.14
Nephrosis 0.16 0.16 97.47 0.55 0.25 45.50 −51.98
Cryptorchidism 0.14 0.03 24.34 0.30 0.06 20.80 −3.55
Myocarditis 0.02 0.02 150.55 0.01 0.02 113.93 −36.62
Pericarditis 2.96 1.02 34.43 2.71 0.50 18.61 −15.82
Dermatitis 0.96 0.67 69.44 1.97 1.11 56.40 −13.04
Erysipelas 0.06 0.09 154.20 0.71 0.68 96.10 −58.10
Arthritis 0.01 0.01 167.33 0.00 0.00 0.00 −167.33
Muscle colour alteration (PSE/DFD) 0.00 0.01 154.92 0.01 0.01 115.72 −39.20
Oedema/emaciation 0.02 0.02 89.57 0.01 0.01 120.94 31.36
Jaundice 0.04 0.03 88.06 0.03 0.03 96.50 8.44
Abscesses 0.74 0.28 38.07 1.09 0.35 31.87 −6.20
Neoplasms / tumours 0.01 0.01 77.46 0.04 0.08 200.00 122.54
Biliary or faecal contamination 2.44 0.90 36.85 3.10 0.88 28.44 −8.41
Trauma 0.56 0.71 125.58 1.58 1.13 71.25 −54.33
Lymphadenopathy 0.14 0.19 143.46 0.06 0.04 62.70 −80.77
Splenomegaly 0.24 0.19 82.18 0.46 0.24 50.97 −31.21
Petechial haemorrhages 0.02 0.02 150.55 0.00 0.00 0.00 −150.55
Total 47.66 19.02 39.91 51.37 5.51 10.73 −29.19