Table 5.
Call properties measured per call by the sow during the REMOVAL of piglets
| Call property | Treatment* | P value | ||
|---|---|---|---|---|
| GROUP-FAN | ISO-FAN | ISO-QUIET | ||
| Number, # | 32.82 ± 14.83 | 39.81 ± 15.60 | 64.16 ± 14.62 | 0.31 |
| Duration, s | 0.28 ± 0.02 | 0.24 ± 0.02 | 0.26 ± 0.02 | 0.37 |
| Interval, s | 13.30 ± 3.70 | 14.46 ± 3.73 | 7.46 ± 3.37 | 0.33 |
| Frequency, Hz | 306.92 ± 69.30 | 454.70 ± 70.28 | 362.26 ± 65.30 | 0.34 |
| Amplitude, dB | 72.22 ± 1.06a | 73.61 ± 1.07a | 67.41 ± 0.99b | 0.001 |
| Bandwidth, Hz | 2,151.02 ± 290.14 | 1,553.10 ± 296.67 | 1,347.19 ± 277.67 | 0.14 |
The REMOVAL period was recorded during a 5-min duration starting when the first piglet was removed from the farrowing crate until the first piglet was returned to the farrowing crate.
*Sow treatments were assigned as follows: 1) housed with eight other sows under constant fan noise (GROUP-FAN; n = 10), 2) housed alone with fan noise present (ISO-FAN; n = 10), and 3) housed alone without fans running (ISO-QUIET; n = 10).
a,bSuperscripts in the same row differ.