Summary and Implications
The objective of this study was to determine if the duration and total number of pig vocalizations when divided into low and high call categories was related to pig behaviors during a fear test. Twenty barrows and 20 gilts were tested over two consecutive weeks between 1300 and 1900 hours using a human approach test (HAT). Throughout the test, vocalizations and behavior were recorded. These results suggest that while high calls are typically the primary measure of stress vocalizations, low calls are also meaningful measures during the stressor of HAT.
Iowa State University
Sholar, Johanna; Colpoys, Jessica D.; Myers, Sarah J.; Gabler, Nicholas K.; Millman, Suzanne T.; and Johnson, Anna K.
"Association of Vocalizations and Swine Behavior during a Human Approach Test,"
Animal Industry Report:
AS 661, ASL R3017.
Available at: http://lib.dr.iastate.edu/ans_air/vol661/iss1/80