Table 4 Description of the herds including number of sows, health status, time of first PRRS infection, vaccination protocol and placement of the nursery
Herd | Size | Health status | Infected | Mass Vaccination | Nursery |
|---|---|---|---|---|---|
A MIX | 570 | SPF + M.Hyo + PRRS2 | Q1 2018 | 3 × yearly since 2018 | On site |
B MIX | 1025 | SPF + M.Hyo + PRRS2 | Q1 2020 | 3 × yearly in 2020 | On site |
C MIX | 1510 | + M.Hyo + App2 + PRRS1 | Before 2010 | 2 × yearly since 2016 | Off site |
D AIAO | 1050 | + M.Hyo + PRRS2 | Before 2010 | 2 × yearly since 2017 | On site |
E AIAO | 1800 | SPF + M.Hyo + App6 + PRRS1 | Q1 2010 | 3 × yearly since 2016 | Off site |
F AIAO | 1000 | SPF + M.Hyo + App12 + PRRS1 | Q3 2019 | 3 × yearly since 2019 | Off site |