Table 1 Descriptive statistics by frequency of laboratory submissions sent to DTU Vet laboratory for testing PRRSV during the period from 2007 to 2010 for breeding (Breed) and production (Prod) herds. Each laboratory submission consisted of individual blood samples collected from the same herd on the same day
Year | 2007 | 2008 | 2009 | 2010 | ||||
|---|---|---|---|---|---|---|---|---|
Herd type | Breed | Prod | Breed | Prod | Breed | Prod | Breed | Prod |
Total number of tested herds | 237 | 2982 | 233 | 2729 | 228 | 2720 | 220 | 2673 |
Median number of submissions per herd (Q1 – Q3) | 12 (12–13) | 1 (1–1) | 12 (12–13) | 1 (1–1) | 12 (12–13) | 1 (1–1) | 12 (12–13) | 1 (1–1) |
Total number of samples | 31,505 | 73,561 | 33,430 | 69,233 | 30,572 | 67,640 | 33,420 | 64,668 |
Median number of samples per herd (Q1–Q3) | 10 (10–15) | 20 (17–20) | 10 (10–15) | 20 (16–20) | 10 (10–10) | 20 (15–20) | 10 (10–15) | 20 (15–20) |