Barrow and Gilt Vocalizations during a Human Approach Test
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The Department of Animal Science originally concerned itself with teaching the selection, breeding, feeding and care of livestock. Today it continues this study of the symbiotic relationship between animals and humans, with practical focuses on agribusiness, science, and animal management.
History
The Department of Animal Husbandry was established in 1898. The name of the department was changed to the Department of Animal Science in 1962. The Department of Poultry Science was merged into the department in 1971.
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- Department of Animal Husbandry (1898–1962)
- College of Agricultural and Life Sciences (parent college)
- Department of Poultry Science (merged with, 1971)
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The Symposium provides undergraduates from all academic disciplines with an opportunity to share their research with the university community and other guests through conference-style oral presentations. The Symposium represents part of a larger effort of Iowa State University to enhance, support, and celebrate undergraduate research activity.
Though coordinated by the University Honors Program, all undergraduate students are eligible and encouraged to participate in the Symposium. Undergraduates conducting research but not yet ready to present their work are encouraged to attend the Symposium to learn about the presentation process and students not currently involved in research are encouraged to attend the Symposium to learn about the broad range of undergraduate research activities that are taking place at ISU.
The first Symposium was held in April 2007. The 39 students who presented research and their mentors collectively represented all of ISU's Colleges: Agriculture and Life Sciences, Business, Design, Engineering, Human Sciences, Liberal Arts and Sciences, Veterinary Medicine, and the Graduate College. The event has grown to regularly include more than 100 students presenting on topics that span the broad range of disciplines studied at ISU.
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Abstract
Swine vocalizations may provide information on behavioral states. Previous studies have reported that an increased total number of high calls (≥1000 Hz) may be an indicator of a negative state in male pigs (Kluivers-Poodt et al., 2011). However, few studies have investigated if vocalizations differ between male and female pigs. Therefore, the objective of this study was to investigate differences between barrow and gilt vocalizations during a human approach test (HAT). Twenty barrows and 20 gilts were tested over two consecutive weeks. Each pig was individually tested in an arena with an unfamiliar human for 10 minutes. Digital audio recordings of pig vocalizations during HAT were captured with a Marantz recorder. Raven software was used to produce spectrograms and manually identify vocalizations. Two call categories were developed based on published literature: low (< 0.01). These data suggest barrows and gilts differ in their vocal response to HAT.