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Table 2 Number and percentage of each lesion detected during the work in the three slaughterhouses and an estimate of the prevalence of each lesion

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

. Slaughterhouse 1 Slaughterhouse 2 Slaughterhouse 3 Tot.
number % number % number % number Prevalence % standard error
Pneumonia 5100 5.40 8840 8.99 1911 4.91 15,851 6.43 0.050
Pleuropneumonia 15,242 16.14 12,654 12.87 6756 17.35 34,652 15.46 0.074
Hepatitis 21,972 23.27 10,535 10.71 5594 14.37 38,101 16.12 0.075
Hepatosis/hepato-dystrophies 625 0.66 3537 3.60 618 1.59 4780 1.95 0.028
Peritonitis/perihepatitis 355 0.38 730 0.74 71 0.18 1156 0.43 0.013
Enteritis 206 0.22 514 0.52 137 0.35 857 0.36 0.012
Nephritis 234 0.25 261 0.27 113 0.29 608 0.27 0.011
Nephrosis 134 0.14 137 0.14 224 0.58 495 0.29 0.011
Cryptorchidism 139 0.15 140 0.14 115 0.30 394 0.20 0.009
Myocarditis 11 0.01 3 0.00 4 0.01 18 0.01 0.002
Pericarditis 3341 3.54 3345 3.40 1059 2.72 7745 3.22 0.036
Dermatitis 832 0.88 1120 1.14 858 2.20 2810 1.41 0.024
Erysipelas 29 0.03 115 0.12 291 0.75 435 0.30 0.011
Arthritis 0 0.00 8 0.01 0 0.00 8 0.00 0.000
Muscle colour alteration (PSE/DFD) 7 0.01 2 0.00 4 0.01 13 0.01 0.002
Oedema/emaciation 22 0.02 12 0.01 4 0.01 38 0.02 0.003
Jaundice 79 0.08 11 0.01 9 0.02 99 0.04 0.004
Abscesses 571 0.60 865 0.88 422 1.08 1858 0.86 0.019
Neoplasms / tumours 25 0.03 7 0.01 9 0.02 41 0.02 0.003
Biliary or faecal contamination 2126 2.25 3582 3.64 956 2.46 6664 2.78 0.034
Trauma 405 0.43 1316 1.34 674 1.73 2395 1.17 0.022
Lymphadenopathy 138 0.15 47 0.05 25 0.06 210 0.09 0.006
Splenomegaly 254 0.27 173 0.18 176 0.45 603 0.30 0.011
Petechial haemorrhages 24 0.03 1 0.00 0 0.00 25 0.01 0.002
Tot. 51,871 54.94 47,955 48.77 20,235 51.45 119,965 51.72 0.102
Animals 94,411   98,333   38,929   231,590