Table 1: Distribution of pigs in the two experiments.

Facility 1Facility 2
Unit AUnit BUnit C

Experiment  1
 Status herd of originPMWS-1PMWS-freePMWS freePMWS free
 Number of pigs25255030
 Mean weight (kg)14.211.711.011.3

Experiment  2
 Status herd of origin PMWS-2PMWS freePMWS freePMWS free
 Number of pigs31255030
 Mean weight (kg)14.39.39.39.0