Solution | Variable | Discrimination measure | |
---|---|---|---|
 |  | Dimension 1 | Dimension 2 |
Introduction variables | PRRS virus status of breeding female replacements in isolation/acclimation | 0.749 | 0.173 |
Isolation/acclimation period (days) | 0.724 | 0.452 | |
Location of replacement animal isolation housing relative to this site | 0.673 | 0.266 | |
Replacement animal isolation flow | 0.664 | 0.185 | |
Serum testing of replacement animals for PRRS virus or antibodies by PCR or ELISA upon exit from acclimation/isolation site(s) | 0.643 | 0.103 | |
Time (days) between last exposure to injected serum and entry of replacements into breeding herd | 0.127 | 0.569 | |
Replacements are exposed to serum from viremic pigs or sows via injection prior to entry | 0.116 | 0.527 | |
Location of replacement animal acclimation housing relative to this site | 0.338 | 0.258 | |
Transportation variables | Pre-rinse with water to flush away loose organic material prior to wash of vehicles used to transport genetic animals | 0.957 | 0.346 |
Washing frequency of vehicles used to transport genetic animals | 0.956 | 0.285 | |
Disinfectant use on vehicles used to transport genetic animals | 0.956 | 0.558 | |
Drying time following wash of vehicles used to transport genetic animals | 0.921 | 0.171 | |
Flow restrictions on vehicles used to transport genetic animals | 0.809 | 0.330 | |
Transit restriction on vehicles used to transport genetic animals | 0.253 | 0.426 | |
 | Route restrictions on vehicles used to transport genetic animals | 0.043 | 0.287 |