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Table 1 Overview of herds included in the study

From: Control and eradication of porcine reproductive and respiratory syndrome virus type 2 using a modified-live type 2 vaccine in combination with a load, close, homogenise model: an area elimination study

Herd name Owner Type of production Number and type of animals Age ranges, weeks Approximate weight ranges, kg
Flow 1
 F1B1 Owner 1 Breeding 500 sows Piglets: 0–4 Piglets: 1–7
 F1B2 Owner 1 Breeding 300 sows Piglets: 0–4
Weaned piglets: 4–12
1–7, 5–30
 F1Q Owner 1 Gilt quarantine 200 pregnant sows
550 gilts
1000 finishers
10–32
12–18
30–120
30–110
 F1WF1 Owner 2 Wean-to-finish 1220 finishers 4–18 7–110
 F1WF2 Owner 3 Wean-to-finish 2000 finishers 4–18 7–110
 F1F1 Owner 2 Finishing 1000 finishers 11–18 30–110
 F1F2 Owner 4 Finishing 800 finishers 11–18 30–110
Flow 2
 F2B1 Owner 5 Breeding 400 sows
2000 growers
Piglets: 1–4
Weaned piglets: 4–12
1–7
5–30
 F2B2 Owner 5 Breeding 320 sows
1300 growers
Piglets 1–4
Weaned piglets: 4–12
1–7
5–30
 F2F1 Owner 6 Finishing 1600 finishers 11–18 30–110
 F2F2 Owner 7 Finishing 900 finishers 11–18 30–110
 F2F3 Owner 5 Finishing 1000 finishers 11–18 30–110
  1. F1B1 Flow 1 Breeding Herd 1, F1B2 Flow 1 Breeding Herd 2, F1F1 Flow 1 Finisher Herd 1, F1F2 Flow 1 Finisher Herd 2, F1Q Flow 1 Quarantine, F1WF1 Flow 1 Wean-Finish 1, F1WF2 Flow 1 Wean-Finish 2, F2B1 Flow 2 Breeding Herd 1, F2B2 Flow 2 Breeding Herd 2, F2F1 Flow 2 Finisher Herd 1, F2F2 Flow 2 Finisher Herd 2, F2F3 Flow 2 Finisher Herd 3