Audiogram of the domestic pig (Sus scrofa)
Data from: Heffner, R.S., and Heffner, H.E. (1990) Hearing in domestic pig (Sus scrofa) and goat (Capra hircus). Hearing Research, 48, 231-240.
Absolute thresholds (in dB re 20 µN/m2) for three domestic pigs (designated A through C)
|
Ìý Frequency (in kHz) |
Individual Thresholds (in dB) |
Ìý Average |
||
|
A |
B |
C |
||
|
.0315 |
77 |
74 |
64 |
72 |
|
.0625 |
48 |
46 |
38 |
44 |
|
.125 |
33 |
36 |
29 |
33 |
|
.250 |
22 |
19 |
13 |
18 |
|
.500 |
20 |
21 |
6 |
16 |
|
1 |
12 |
19 |
13 |
15 |
|
2 |
18 |
19 |
20 |
19 |
|
4 |
17 |
20 |
6 |
14 |
|
8 |
11 |
11 |
5 |
9 |
|
16 |
11 |
19 |
7 |
12 |
|
32 |
23 |
30 |
21 |
25 |
|
45 |
66 |
>82 |
73 |
74 |
Lowest and highest frequencies audible at sound pressure levels (SPL) ranging from 30 to 70 dB SPL
|
SPL (in dB) |
Lowest audible frequency (in kHz) |
Highest audible frequency (in kHz) |
|
70 |
.033 |
ÌýÌý 43.7 |
|
60 |
.042 |
ÌýÌý 40.7 |
|
50 |
.054 |
38 |
|
40 |
.081 |
ÌýÌý 35.5 |
|
30 |
.143 |
33 |
Additional Parameters:
Body weight = 135 kg
Functional interaural distance= 498 µs
(Time required for sound to travel around the head from one auditory meatus to the other.)
Comments: Threshold values taken from original data. The pigs breeds were Duroc (A), Hampshire (B), and Yorkshire (C).