Table 2.
Cross-tabulations of PBA and LOS implementation and feasibility of implementation.
| Mean | Implementation by feasibility rating | |||||
|---|---|---|---|---|---|---|
| Practice | Description | N | Implementation | Infeasible | Neutral | Feasible |
| PERIMETER BUFFER AREA (PBA) | ||||||
| PBADEFINED | A perimeter buffer area is clearly defined | 317 | 0.391 (0.489) | 0.161 (0.371)a | 0.185 (0.391)a | 0.569 (0.497)b |
| PBAENTRY | Access to perimeter buffer area is restricted through a single entry with a gate at the entrance which is locked when the facility is not attended | 317 | 0.177 (0.382) | 0.082 (0.276)a | 0.117 (0.323)a | 0.340 (0.476)b |
| PBAEQUIPMENT | All vehicles and equipment (not containing animals) entering the perimeter buffer area are documented to be clean, disinfected, and dried | 315 | 0.229 (0.421) | 0.066 (0.249)a | 0.105 (0.309)a | 0.479 (0.502)b |
| PBATRANSPORT | All animal transport vehicles are verified clean, disinfected, and dried before entry to the site | 315 | 0.571 (0.496) | 0.239 (0.430)a | 0.233 (0.427)a | 0.761 (0.427)b |
| LINE OF SEPARATION (LOS) | ||||||
| LOSDEFINED | A line of separation is clearly defined for each building | 309 | 0.605 (0.490) | 0.327 (0.474)a | 0.180 (0.388)b | 0.778 (0.417)c |
| LOSLOCKED | Buildings are locked when no one is present | 308 | 0.425 (0.495) | 0.123 (0.331)a | 0.064 (0.247)a | 0.612 (0.488)b |
| LOSENTRY | One entry point has been established for personnel to cross the line of separation | 308 | 0.688 (0.464) | 0.235 (0.428)a | 0.231 (0.427)a | 0.876 (0.330)b |
| LOSANIMALS | All animals, including birds, are excluded from crossing the line of separation and contacting pigs | 308 | 0.731 (0.444) | 0.233 (0.427)a | 0.409 (0.503)b | 0.894 (0.309)c |
| LOSLOG | A visitor logbook is maintained by the site manager/owner | 309 | 0.495 (0.501) | 0.314 (0.471)a | 0.125 (0.334)b | 0.619 (0.487)c |
| LOSCLOTHING | Employees and visitors are instructed to change into site-specific coveralls or clothing and boots and wash hands when crossing to the pig side of the line of separation | 309 | 0.770 (0.421) | 0.361 (0.487)a | 0.458 (0.509)a | 0.859 (0.348)b |
| LOSCLOTHESPBA | When a site includes multiple pig buildings, site-specific clothing or coveralls and boots are put on within the perimeter buffer area and boots changed at each barn when crossing the line of separation | 296 | 0.534 (0.500) | 0.154 (0.364)a | 0.190 (0.397)a | 0.741 (0.439)b |
| LOSFOMITES | All equipment and other objects (including cell phones, jewelry, and electronics) that cross to the pig side of the line of separation are cleaned and disinfected, or come from a known clean source | 303 | 0.419 (0.494) | 0.137 (0.346)a | 0.109 (0.315)a | 0.663 (0.474)b |
| LOSCLEANING | Cleaning and disinfecting of animal rooms and buildings between groups of pigs is required | 304 | 0.905 (0.294) | 0.632 (0.496)a | 0.313 (0.479)b | 0.959 (0.198)c |
| LOSFEED | Feed is delivered and stored in bird, rodent, and insect proof containers/bins and feed spills are cleaned up | 304 | 0.901 (0.299) | 0.636 (0.492)a | 0.467 (0.516)a | 0.948 (0.223)b |
Standard deviations are in parentheses.
a, b, c
Values within the same row with unique superscripts differ P < 0.10 according to Wilcoxon rank sum tests.