Table 4.
Description and mixed model (MIXED procedure) analysis for the time until the first contact [s] (TUFC) (original and logarithmic data) for different categorical influencing variables
| Description (TUFC) | Model (log (TUFC)) | |||||||
|---|---|---|---|---|---|---|---|---|
| n (# pens) |
mean [s] | std. dev. | geo. Mean | lower conf. Limit | upper conf. Limit | F-value | P-value | |
| Group size | ||||||||
| 1 (1–12 pigs per pen) | 578 | 12.5 | 13.3 | 7.1 | 4.8 | 14.5 | 2.72 | 0.0191 |
| 2 (13–20 pigs per pen) | 452 | 8.2 | 9.6 | 4.7 | 3.1 | 8.6 | ||
| 3 (21–35 pigs per pen) | 388 | 7.9 | 10.1 | 4.3 | 2.9 | 8.5 | ||
| 4 (36–50 pigs per pen) | 76 | 5.9 | 7.7 | 3.2 | 2.1 | 5.9 | ||
| 5 (51–100 pigs per pen) | 30 | 5.2 | 6.2 | 3.0 | 1.9 | 5.6 | ||
| 6 (> 100 pigs per pen) | 16 | 6.9 | 11.7 | 2.9 | 2.1 | 7.1 | ||
| Feeding system | ||||||||
| 1 (dry feeding) | 25 | 11.2 | 10.6 | 7.0 | 4.6 | 12.9 | 1.27 | > 0.05 |
| 2 (wet feeding) | 747 | 9.1 | 11.0 | 5.0 | 3.3 | 10.0 | ||
| 3 (fully automatic liquid feeding with sensor) | 299 | 6.9 | 8.3 | 4.0 | 2.6 | 7.2 | ||
| 4 (fully automatic liquid feeding without sensor) | 469 | 11.9 | 13.2 | 6.6 | 4.5 | 13.8 | ||
| Ventilation system | ||||||||
| 1 (aisle ventilation) | 615 | 10.4 | 11.5 | 6.0 | 4.0 | 11.7 | 3.4 | 0.0025 |
| 2 (perforated air channel) | 494 | 7.7 | 9.7 | 4.1 | 2.7 | 8.2 | ||
| 3 (diffuse fresh air system) | 43 | 11.0 | 11.8 | 6.7 | 4.3 | 12.3 | ||
| 4 (high-velocity ventilation) | 174 | 10.1 | 12.4 | 5.6 | 3.7 | 10.9 | ||
| 5 (slot ventilation) | 161 | 11.0 | 13.9 | 5.3 | 3.7 | 12.8 | ||
| 6 (others) | 20 | 12.3 | 13.6 | 8.0 | 4.8 | 11.8 | ||
| 7 (outside pens) | 33 | 8.1 | 9.3 | 4.8 | 3.0 | 8.1 | ||
| Age group | ||||||||
| 1 (1st-6th fattening week) | 842 | 9.4 | 11.0 | 5.2 | 3.5 | 10.3 | 0.3 | > 0.05 |
| 2 (7th–12th fattening week) | 698 | 9.8 | 11.8 | 5.2 | 3.5 | 10.9 | ||
| Control position of the caretaker pre-fattening period | ||||||||
| 1 (service corridor) | 1380 | 10.0 | 11.6 | 5.5 | 3.7 | 11.2 | 2.0 | > 0.05 |
| 2 (inside the pen) | 131 | 5.6 | 8.2 | 3.1 | 2.0 | 5.2 | ||
| 3 (others/mixed) | 29 | 5.3 | 9.3 | 2.8 | 1.8 | 4.9 | ||
| Control position of the caretaker middle/end- fattening period | ||||||||
| 1 (service corridor) | 1453 | 9.9 | 11.6 | 5.4 | 3.7 | 11.1 | 1.0 | > 0.05 |
| 2 (inside the pen) | 58 | 3.3 | 3.4 | 2.5 | 1.3 | 2.6 | ||
| 3 (others/mixed) | 29 | 5.3 | 9.3 | 2.8 | 1.8 | 4.9 | ||
| Flooring type | ||||||||
| 1 (straw) | 9 | 7.3 | 9.0 | 3.8 | 2.6 | 8.5 | 0.1 | > 0.05 |
| 2 (fully slatted concrete flooring) | 1325 | 9.6 | 11.5 | 5.2 | 3.5 | 10.7 | ||
| 3 (partially slatted concrete flooring) | 206 | 9.4 | 11.2 | 5.1 | 3.4 | 10.2 | ||
| Time of day | ||||||||
| 1 (08:00–10:59) | 576 | 9.7 | 11.1 | 5.5 | 3.6 | 10.8 | 0.5 | > 0.05 |
| 2 (11:00–13:59) | 479 | 8.9 | 11.0 | 5.0 | 3.3 | 9.6 | ||
| 3 (14:00–16:59) | 384 | 10.3 | 12.4 | 5.3 | 3.7 | 11.9 | ||
| 4 (17:00–19:59) | 48 | 9.1 | 13.0 | 4.3 | 3.0 | 9.8 | ||
* study population: 1668 pig groups (pen) from 214 herds
TUFC time [s] until the first contact (touching the observer) of a pig with the person in the pen