Association of Vocalizations and Swine Behavior during a Human Approach Test

  • Johanna Sholar (Iowa State University)
  • Jessica D. Colpoys (Iowa State University)
  • Sarah J. Myers (Iowa State University)
  • Nicholas K. Gabler (Iowa State University)
  • Suzanne T. Millman (Iowa State University)
  • Anna K. Johnson (Iowa State University)


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.

Keywords: ASL R3017, Animal Science, Veterinary Diagnostic and Production Animal Medicine

How to Cite:

Sholar, J., Colpoys, J. D., Myers, S. J., Gabler, N. K., Millman, S. T. & Johnson, A. K., (2015) “Association of Vocalizations and Swine Behavior during a Human Approach Test”, Iowa State University Animal Industry Report 12(1). doi: https://doi.org/10.31274/ans_air-180814-1334

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Published on
01 Jan 2015
Peer Reviewed