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

BMC Veterinary Research

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

	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

ISSN: 1746-6148