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Table 1 Descriptive information on the herd characteristics and technical parameters of 60 farrow-to-finish herds in Germany

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

Parameter N Mean Median SD Min Max
Number of sows/ herd 60 396 300 299 100 1510
Number of litters/ sow/ year 60 2.36 2.37 0.88 2.12 2.53
Mortality till weaning (%) 60 15.1 15.3 5.5 3.3 30.4
Weaning age (days) 60 24.4 25.2 3.3 19.3 32.6
Number of weaned pigs/ sow/ year 60 27.3 26.9 2.6 21.1 32.2
Number of sows per employee 58a 130 107 64 50 450
Number of slaughtered pigs/ year 60 5306 3740 5657 1000 40,000
Average daily weight gain (g/day) 38a 811.2 800 43.8 720 900
Average feed conversion ratio (g/g)/ year 27a 2.75 2.72 0.13 2.4 2.95
Years experience farmer 60 24.9 25 10.2 5 45
Number of pathogens vaccinated against 60 6.9 7 1.5 4 10
  1. aData was not available in all participating herds