Table 9.
Mean (± SE) vocal characteristics of piglets during the 10-min Isolation Test
| Variable | Control n = 27 piglets |
Medium n = 32 piglets |
High n = 36 piglets |
|---|---|---|---|
| Duration, s | 0.38 ± 0.03 | 0.37 ± 0.02 | 0.35 ± 0.02 |
| Peak frequency, Hz | 424.32 ± 104.67 | 304.67 ± 68.09 | 374.00 ± 83.74 |
| Bandwidth, Hz | 1,167.39 ± 217.97 | 1,108.81 ± 197.08 | 1,175.62 ± 202.72 |
| Entropy | 0.38 ± 0.02 | 0.36 ± 0.02 | 0.34 ± 0.02 |
| Total duration, s | 204.11 ± 18.52c | 157.79 ± 18.65d | 192.27 ± 14.75c |
| Interval between calls, s | 0.27 ± 0.04 | 0.31± 0.04 | 0.27 ± 0.03 |
| Harmonic to noise ratio | 23.69 ± 0.97 | 24.55 ± 0.89 | 23.74 ± 0.85 |
c,
dMeans within a row with different superscripts tended to differ (P < 0.07).