Changes of Serum 3-Methylhistidine Concentration and Energy-Associated Metabolites in Dairy Cows with Ketosis
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概要
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The present study examined the Serum 3-methylhistidine concentrations and energy-associated variables of 5 healthy Holstein cows and 5 Holstein cows with ketosis. The serum total cholesterol and apolipoprotein B-100 concentrations and lecithin-cholesterol acyltransferase (LCAT) activity of the ketotic cows were lower than those of the healthy cows 14 days before parturition. The serum non-esterified fatty acid (NEFA) concentration on the day of parturition and 3-methylhistidine concentration 14 days after parturition were higher in the ketotic cows. The serum 3-methylhistidine concentration 14 days after parturition was negatively correlated with the serum LCAT activity 14 days before parturition and was positively correlated with the serum NEFA concentration on the day of parturition. Insufficiency of cholesterol metabolism and acceleration of body fat degradation occur before parturition in cows with ketosis, and these characteristics are correlated with acceleration of protein degradation after parturition.
著者
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NAKASHIMA Kazuki
Molecular Nutrition Research Team, National Institute of Livestock and Grassland Science
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Nakashima Kazuki
Molecular Nutrition Research Team National Institute Of Livestock And Grassland Science
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OHBA Yoshikazu
Division of Dairy Cattle, Shizuoka Prefectural Livestock Experiment Station
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AKAMATSU Hirohisa
Division of Dairy Cattle, Shizuoka Prefectural Livestock Experiment Station
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SAITOH Yoshihide
Division of Dairy Cattle, Shizuoka Prefectural Livestock Experiment Station
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SERIZAWA Masahumi
Division of Dairy Cattle, Shizuoka Prefectural Livestock Experiment Station
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MIYAKE Koji
Division of Dairy Cattle, Shizuoka Prefectural Livestock Experiment Station
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