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Ketotic cows display a different serum nonesterified fatty acid composition

Published online by Cambridge University Press:  31 January 2020

Lei Liu ,
Taiyu Shen ,
Wei Yang ,
Hongjiang Yu ,
Sansi Gao ,
Baoyin Huang  and
Chuang Xu
Lei Liu
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China College of Veterinary Medicine, Hunan Provincial Key Laboratory of Protein Engineering in Animal Vaccines, Collaborative innovation center of safety production of livestock and poultry in Hunan, Hunan Agricultural University, Changsha, Hunan, 410128, China
Taiyu Shen
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China
Wei Yang
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China
Hongjiang Yu
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China
Sansi Gao
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China
Baoyin Huang
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China
Chuang Xu*
Affiliation:
College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang, 163319, China
*
Author for correspondence: Chuang Xu, Email: [email protected]
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Abstract

The experiments reported in this research communication aimed to compare the serum nonesterified fatty acid (NEFA) composition in ketotic cows and healthy cows during the perinatal period. NEFAs play significant roles in etiology and pathology of ketosis. We hypothesized that ketotic cows will display a different serum NEFA composition compared to healthy controls, and fatty acid related indicators for ketosis prediction can be screened. Pre-partum healthy cows were recruited, and blood samples were collected on −7, 3, 7, 14 and 21 d postpartum. Cows were further divided into a healthy control group (C group, n = 6) and a ketosis group (K group, n = 6) if blood β-hydroxybutyric acid levels exceeded 1.2 mm during the experiment. NEFA composition was then analyzed by means of Gas Chromatography-Mass Spectrometer (GC-MS). Only C12 : 0% was significantly higher in C group than K group on 7 d pre-partum (P < 0.05), when the cows were not diagnosed with ketosis. Five fatty acids displayed statistical differences in composition between C and K group (P < 0.05), namely C12 : 0, C16 : 0, C17 : 0, C18 : 1n9 and C22 : 1n9. Saturates%, unsaturates%, mono-unsaturates% and saturates/unsaturates were also different between C and K group (P < 0.05). Of note, C18 : 1n9/C12 : 0 and C18 : 1n9/C22 : 1n9 in K group were significantly higher than those in controls on 7 d pre-partum (P < 0.05). It is suggested that the ratios show potential as indicators for prediction of ketosis.

Keywords

de novo lipogenesisdisease predictingketosisNEFA
Type
Research Article
Information
Journal of Dairy Research , Volume 87 , Issue 1 , February 2020 , pp. 52 - 55
Copyright
Copyright © Hannah Dairy Research Foundation 2020

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