understanding vocalization might help to assess stressful conditions in piglets

Clicks: 271
ID: 231760
2013
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Abstract
Assessing pigs’ welfare is one of the most challenging subjects in intensive pig farming. Animal vocalization analysis is a noninvasive procedure and may be used as a tool for assessing animal welfare status. The objective of this research was to identify stress conditions in piglets reared in farrowing pens through their vocalization. Vocal signals were collected from 40 animals under the following situations: normal (baseline), feeling cold, in pain, and feeling hunger. A unidirectional microphone positioned about 15 cm from the animals’ mouth was used for recording the acoustic signals. The microphone was connected to a digital recorder, where the signals were digitized at the 44,100 Hz frequency. The collected sounds were edited and analyzed. The J48 decision tree algorithm available at the Weka® data mining software was used for stress classification. It was possible to categorize diverse conditions from the piglets’ vocalization during the farrowing phase (pain, cold and hunger), with an accuracy rate of 81.12%. Results indicated that vocalization might be an effective welfare indicator, and it could be applied for assessing distress from pain, cold and hunger in farrowing piglets.
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neves2013animalsunderstanding Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Diego Pereira Neves;Andréia C. M. de Almeida;Fabio Violaro;Stanley R. M. Oliveira;Alexandra Ferreira da Silva Cordeiro;Irenilza de Alencar Nääs
Journal translational oncology
Year 2013
DOI
10.3390/ani3030923
URL
http://www.mdpi.com/2076-2615/3/3/923
Keywords
animal welfare

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