title: Stress detection and classification of laying hens by sound analysis.
abstract: Stress adversely affects the wellbeing of commercial chickens, and comes with an economic cost to the industry that cannot be ignored. In this paper, we first develop an inexpensive and non-invasive, automatic online-monitoring prototype that uses sound data to notify producers of a stressful situation in a commercial poultry facility. The proposed system is structured hierarchically with three binary-classifier support vector machines. First, it selects an optimal acoustic feature subset from the sound emitted by the laying hens. The detection and classification module detects the stress from changes in the sound and classifies it into subsidiary sound types, such as physical stress from changes in temperature, and mental stress from fear. Finally, an experimental evaluation was performed using real sound data from an audio-surveillance system. The accuracy in detecting stress approached 96.2%, and the classification model was validated, confirming that the average classification accuracy was 96.7%, and that its recall and precision measures were satisfactory.
authors: Department of Animal Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea .
authors: Jonguk
authors: J
authors: Lee
authors: Department of Animal Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea .
authors: Byeongjoon
authors: B
authors: Noh
authors: Department of Animal Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea .
authors: Suin
authors: S
authors: Jang
authors: Department of Animal Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea .
authors: Daihee
authors: D
authors: Park
authors: Department of Animal Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea .
authors: Yongwha
authors: Y
authors: Chung
authors: Department of Animal Science, Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Gyeongsang National University, Jinju 660-701, Korea .
authors: Hong-Hee
authors: HH
authors: Chang
keywords: Laying Hens; Monitoring System; Sound Analysis; Stress Recognition
references: Worlds Poult Sci J. 1971 Jul-Sep;27(3):263-75
references: 4328104
references: Asian-Australas J Anim Sci. 2013 Jul;26(7):1030-7
references: 25049882
references: Poult Sci. 1996 Dec;75(12):1555-62
references: 9000283
references: Asian-Australas J Anim Sci. 2013 Dec;26(12):1742-52
references: 25049765
references: J Exp Zool. 1984 Dec;232(3):633-45
references: 6097634
references: Sensors (Basel). 2013 Sep 25;13(10):12929-42
references: 24072029
references: Sensors (Basel). 2012;12(3):3773-88
references: 22737037
references: Poult Sci. 1991 Jan;70(1):74-9
references: 2017420
references: Asian-Australas J Anim Sci. 2013 Jun;26(6):766-71
references: 25049848
references: Poult Sci. 1997 Apr;76(4):588-93
references: 9106886