Department of Psychology

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)

 

Frequency

(in kHz)

Individual Thresholds

(in dB)

 

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

   43.7

60

.042

   40.7

50

.054

38

40

.081

   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).

Last Updated: 6/27/22