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KMID : 1025520100520010051
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Journal of Animal Science and Technology
2010 Volume.52 No. 1 p.51 ~ p.56
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Characteristics of Dairy Cow’s Vocalization in Postpartum Related with Calf Isolation.
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Kim Min-Jin
Son Seung-Hun
Rhim Shin-Jae
Chang Moon-Baek
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Abstract
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This study was conducted to clarify the characteristics of Holstein dairy cow’s vocalization in postpartum related with calf isolation. Vocalizations of 16 individuals of cows were recorded 6 hours per day(1:00am~4:00am and 1:00pm~4:00pm) using digital recorder and microphone during October 2008 and May 2009. Vocalizations were divided into 4 types. Characteristics of frequency, intensity and duration were analyzed by GLM(general linear model) and Duncan’s multi-test. There were significant differences in frequency and intensity based on analyses of spectrogram and spectrum among 4 types of vocalizations. Frequencies of vocalizations were dramatically decreased on 2nd and 3rd day. Vocalization would be important factor affecting the mother- young bond in Holstein dairy cattle.
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KEYWORD
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Calf isolation, Cow, Holstein, Postpartum, Vocalization
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