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KMID : 1094020170340030222
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Journal of Veterinary Clinics
2017 Volume.34 No. 3 p.222 ~ p.224
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Prepartal Decrease in Plasma Total Cholesterol Concentration in Dairy Cows Developed Subclinical Ketosis
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Ro Young-Hye
Choi Woo-Jae
Kim Ho-Yung
Kim Dan-Il
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Abstract
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A retrospective study was designed to determine whether there were any differences in prepartal blood biochemical parameters between cows developed subclinical ketosis (SCK) and non-SCK cows. Data on blood biochemistry from 33 Holstein parturient cows (15 SCK and 18 non-SCK cows) in one farm for one year, were compared. Plasma beta-hydroxybutyrate, non-esterified fatty acid and glucose concentrations were utilized in the diagnosis of SCK and showed significant differences between SCK and non-SCK cows after calving. Before calving, however, only plasma total cholesterol concentration in SCK cows was significantly lower than that in non-SCK cows. Consequently, it seems that lower plasma total cholesterol concentration before calving is related to the occurrence of SCK immediately after calving.
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KEYWORD
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subclinical ketosis , total cholesterol , dairy cows , negative energy balance
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