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KMID : 1023520180410020085
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Korean Journal of Veterinary Service
2018 Volume.41 No. 2 p.85 ~ p.89
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Cross-sectional study: prevalence of subclinical ketosis in dairy cattle at Chungnam province
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Al Faruk Md. Shohel
Park Byeong-Su
Jin Su-Jeong
Ha Seung-Min
Cho Yong-Il
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Abstract
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This study was conducted to demonstrate the prevalence of subclinical ketosis in dairy cattle based on days in milk and herd level. Four to five blood samples were collected in five different lactation periods and analyzed for β-hydroxybutyrate using a Portable Ketone Test Kit. Subclinical ketosis was observed in 12 herds at prevalence of 6.3∼57.1% depending on herd level, with four herds showing more than 40% subclinical ketosis prevalence. The distribution of subclinical ketosis in the early lactation period, high yield lactation period, mid lactation period, late lactation period and dry period was 9.5%, 27.5%, 36.8%, 27.9% and 12.5%, respectively. Clinical ketosis was only observed during early lactation (9.5%) and mid lactation (2%) period.
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KEYWORD
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β-hydroxybutyrate, Days in milk, Subclinical ketosis
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