VHAT variables | Arithmetic meana | Standard deviation | Variation coefficient | Median | Minimum | Maximum |
|---|
TUFC [s] | 9.6 | 11.4 | 119.5 | 5.0 | 0 | 59 |
TUOS [s] | 21.9 | 15.0 | 68.6 | 18.0 | 1 | 60 |
PPSO [%] | 47.7 | 21.9 | 45.9 | 50.0 | 0 | 100 |
PPAC [%] | 11.1 | 12.4 | 112.2 | 8.8 | 0 | 100 |
- VHAT Voluntary Human Approach Test, TUFC time until the first contact (touching the observer) of a pig with the person in the pen, TUOS time until the observer is completely surrounded by pigs within a radius (of approx. 2 m), PPSO percentage of pigs relative to group size [%] surrounding the observer after 1 min, PPAC percentage of pigs relative to group size [%] completely avoiding contact with the observer during the entire test period
- a study population: 1668 pig groups (pen) from 214 herds
