Effectiveness of alternative measures to reduce antimicrobial usage in pig production in four European countries

Table 2 Comparison of median disease incidence scores^a per age categories before and after intervention (n = 48)

Age category	Disorders of	Median before intervention (Q25; Q75^b)	Median after intervention (Q25; Q75)	p-value^c
Suckling pigs	locomotor system	3 (2; 4)	3 (2; 3)	0.36
	gastro-intestinal tract system	3 (2; 4)	1 (1; 2)	< 0.001
	respiratory tract system	1 (1; 2)	1 (1; 2)	0.55
	central nervous system	1 (1; 2)	2 (2; 3)	< 0.001
	skin	1 (1; 2)	1 (1; 2)	0.92
Weaned pigs	locomotor system	3 (2; 4)	3 (2; 3)	0.01
	gastro-intestinal tract system	2 (1; 4)	2 (2; 3)	0.19
	respiratory tract system	2 (1; 3)	2 (1; 3)	0.97
	central nervous system	2 (2; 3)	3 (2; 4)	0.24
	skin	2 (1; 2)	2 (2; 3)	0.18
Fattening pigs	locomotor system	2 (2; 3)	2 (2; 3)	0.45
	gastro-intestinal tract system	1 (1; 2)	2 (2; 3)	0.02
	respiratory tract system	2 (1; 3)	2 (1; 3)	0.84
	central nervous system	1 (1; 2)	1 (1; 2)	0.11
	skin	1 (1; 2)	1 (1; 2)	0.08
Breeding pigs	locomotor system	2 (2; 3)	3 (2; 3)	0.70
	gastro-intestinal tract system	1 (1; 1)	1 (1; 2)	< 0.001
	respiratory tract system	1 (1; 2)	2 (1; 2)	0.60
	central nervous system	1 (1; 1)	1 (1; 1)	0.02
	skin	1 (1; 2)	1 (1; 1)	0.04
	reproductive tract system	2 (2; 3)	2 (2; 3)	0.80
	udder	2 (2; 3)	2 (2; 3)	0.03

^aScores are composed of a five-point Likert scale (1 = never, 2 = rarely; 3 = occasionally; 4 = regularly; 5 = commonly/always). Significant (p < 0.05) results are highlighted in bold
^b25th and 75the quartiles
^cWilcoxon signed rank test (n = 48 farrow-to-finish herds)

ISSN: 2055-5660