World Poultry - News: Chicken sounds indicate stress - 0 views
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vocalisation patterns have been found to be different for stress due to handling and stress due to overcrowding. The analysis was carried out by digitally recording laying chickens' vocalisations under different types of stressful conditions, and then, after removing background noise, analysing the recordings using a modified version of the Hidden Markov Model (HMM) with voice recognition algorithms.
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HMM has achieved an overall condition classification accuracy of 74%.