Association between antimicrobial usage, biosecurity measures as well as farm performance in German farrow-to-finish farms

Table 2 Descriptive information on the treatment incidence per age category

Parameter	N	Mean	Median	SD	Min	Max
TI suckling pigs	60	245.0	138.9	257.4	8.1	1496.4
TI weaned pigs	60	633.4	487.6	491.5	8.5	1965.8
TI fattening pigs	58^a	51.7	19.4	77.1	0.0	399.2
TI 200 days^b	60	242.8	189.1	170.5	3.8	673.9
TI breeding pigs (gilts, sows, boars)	60	42.0	21.1	49.1	0.2	204.5

^aTwo farms with missing values for the TI fattening pigs
^bThe treatment incidence is defined as the number of pigs per 1000 pigs that receive a daily dose of antimicrobials. A TI 200 days is applied for pigs from birth till slaughter for comparison between herds, assuming an expected lifespan of 200 days

ISSN: 2055-5660