Table 2.
Characteristics of the 60 Swedish farrow-to-finish pig herds surveyed
| Mean | Minimum | 25th percentile | Median | 75th percentile | Maximum | |
|---|---|---|---|---|---|---|
| Number of sows | 242.7 | 96 | 137.5 | 187.5 | 275 | 1200 |
| Number of employees | 3.9 | 2 | 3 | 3 | 4 | 15 |
| Farmer age | 49.7 | 27 | 44 | 49 | 58 | 70 |
| Years of experience | 22.3 | 3 | 15 | 22 | 28 | 50 |
| Pig age at weaning (days) | 35 | 28 | 33 | 35 | 35 | 49 |
| Total duration (weeks)a | 26.9 | 23 | 25.6 | 27 | 28 | 32 |
| Perceived need for AMb | 2.3 | 1 | 1 | 2 | 3 | 6 |
| Perceived risks of AMb | 3.1 | 1 | 2.3 | 3 | 3.8 | 6 |
| Perceived benefits of AMb | 4.3 | 1.8 | 3.6 | 4.2 | 5 | 6 |
| Veterinarians’ information contributionb | 5 | 1 | 4.5 | 5 | 6 | 6 |
| Internal biosecurityc | 58.8 | 33 | 52 | 61 | 65.5 | 80 |
| External biosecurityc | 68.3 | 44 | 61.5 | 68 | 76 | 93 |
aTotal duration = entire rearing period from birth to slaughter, data available for 51 herds, AM = Antimicrobial; bThe original items were assessed on a 6-point Likert scale, where higher scores indicated stronger agreement with the respective item; cScores for internal and external biosecurity range between 0 and 100, where 100 is “perfect biosecurity”