S O U R C E

UNDERSTANDING RISKS

It is important to understand all the risks you and your operation face against porcine reproductive and respiratory syndrome (PRRS). Today’s pig industry is highly mobile. Pigs are moved from farm to farm, barn to barn, and even across state lines. The better you understand the risks, the better you can take steps to reduce or eliminate them.

Below is a series of questions about potential PRRS risk areas on your farm. Once you complete all the questions, a summary report will be generated that lists each question, how you responded, and your level of risk for each question area (reduced, potential or high). You can print this report and use it with your veterinarian to make a plan for reducing PRRS risk.

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Restate Your Goals
Internal Risk
Understand internal risks in order to minimize transmission and maximize immunity to reduce chronic resident virus circulation within the farm.

Farrowing

Do you only cross-foster piglets when teat space is needed?

Do you move all pigs out of the farrowing room at the same time (e.g., no moving pigs/sows between rooms, no holding pigs back at weaning)?

Do you leave two to three days for cleaning and disinfecting after piglets are moved out?

Do you change needles and gloves and disinfect processing equipment between every litter?

Internal Risk
Understand internal risks in order to minimize transmission and maximize immunity to reduce chronic resident virus circulation within the farm.

Sows

Do you conduct feedback of weak-born, aborted or stillborn fetuses or manure to gestating females?

Do you wash and disinfect hallways post-weaning prior to loading farrowing rooms?

Internal Risk
Understand internal risks in order to minimize transmission and maximize immunity to reduce chronic resident virus circulation within the farm.

Immune Management

Do you have an ongoing immunity (e.g., vaccination, exposure) and virus transmission management plan in place?

If yes, do you use vaccine?

If yes, do you use live virus inoculation (LVI)?

Note: In an effort to maintain PRRS stability, having an ongoing immune management plan is important. Without a plan, there is potential for chronic virus circulation.
External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Status of Replacement Animals

Are your replacement animals PRRS-positive, -negative or is their status unknown?

Is there a quarantine/isolation period for incoming replacement gilts/animals?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Biosecurity Plan

Do you have a written biosecurity plan with protocols?

Do you perform biosecurity audits?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Personnel

Do you have shower-in/shower-out facilities?

Do you have a designated area for contaminated clothing, boots, supplies and other materials?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Transportation

Have you established a Line of Separation (also known as the “clean/dirty line”; marks inside of farm from outside of farm) on your farm?

Does vehicular traffic coming on and off your farm — including load-out and feed trucks — adhere to the Line of Separation and biosecurity protocols?

Do you have an established protocol for disinfecting market hog vehicles?

Do you use dedicated trailers for movement of pigs (e.g., replacement gilt trailers, weaned-pig trailers, cull animal trailers)?

Do you clean and maintain the dedicated trailers using all applicable biosecurity protocols?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Sanitation

Are all vehicles sanitized if they cross the Line of Separation, both prior to arriving and after departure?

All movement of pigs on and off the farm has been accurately recorded.

When disinfecting, hot water and an effective virucidal disinfectant are used, and adequate drying time is allowed.

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Proximity

Do you have pig neighbors in close proximity (i.e., located 4 miles away or less)?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Semen

Do you purchase semen from boar studs that have tested negative for PRRS and regularly monitor their PRRS status?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Environmental Surfaces and Fomites

Do you disinfect all incoming farm supplies (a minimum of two hours contact time prior to introduction)?

Do you have a room specified for disinfection and drying (D&D room)?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Pests

Is there an insect and rodent control plan in place?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Manure Handling

Is equipment or tools used to move or store manure disinfected immediately after use?

When using an outside manure hauler, which of the following protocols are strictly followed? (Check all that apply.)

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Mortalities

Is there a proper Animal Disposal Unit on the farm?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Airborne Spread

Do you have an air filtration system installed on your farm?

If you answered yes to the previous question

Do you have a "double door" entry/exit system, including an exhaust fan?

Have you identified and sealed all potential air leaks (e.g., cracks in the building or around windows, doors, shutters, fans)?

External Risks
Understand external risks to minimize transmission and maximize immunity to reduce non-resident virus introduction/re-introduction from outside the farm.

Shared Equipment

Do you share any equipment, vehicles or other materials with neighboring farms?

This is an area of your farm where your PRRS risk is reduced.
This is an area of your farm where, under the right circumstances, you may have a PRRS risk.
This is an area of PRRS risk for your farm. Work with your herd veterinarian to create a plan to control, eliminate or prevent this risk.
2. Farrowing
3. Sows
4. Immune Management
Note: In an effort to maintain PRRS stability, having an ongoing immune management plan is important. Without a plan, there is potential for chronic virus circulation.
5. Status of Replacement Animals
6. Biosecurity Plan
7. Personnel
8. Transportation
9. Sanitation
10. Proximity
11. Semen
12. Environmental Surfaces and Fomites
13. Pests
14. Manure Handling
15. Mortalities
16. Airborne Spread
17. Shared Equipment