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Alterations of the acylcarnitine profiles in blood serum and in muscle from periparturient cows with normal or elevated body conditionGhaffari, Morteza H. ...The objective of the current study was to characterize muscle and blood serum acylcarnitine (AcylCN) profiles and to determine the mRNA abundance of muscle carnitine acyltransferases in ... periparturient dairy cows with high (HBCS) and normal body condition (NBCS). Fifteen weeks antepartum, 38 pregnant multiparous Holstein cows were assigned to 2 groups that were fed differently to reach the targeted BCS and backfat thickness (BFT) until dry-off at -49 d before calving (HBCS: BCS >3.75 and BFT >1.4 cm; NBCS: <3.5 and <1.2 cm). Thereafter, both groups were fed identical diets. Blood samples and biopsies from the semitendinosus muscle were collected on d -49, 3, 21, and 84 relative to calving. Actual BCS at d -49 were 3.02 % 0.24 and 3.82 % 0.33 (mean % SD) for NBCS and HBCS, respectively. In both groups, serum profiles showed marked changes during the periparturient period, with decreasing concentrations of free carnitine and increasing concentrations of long-chain AcylCN. Compared with NBCS, HBCS had greater serum long-chain AcylCN in early lactation, which may point to an insufficient adaptation of their metabolism in response to the metabolic load of fatty acids around parturition. The muscle concentrations of C5-, C9-, C18:1-, and C18:2-AcylCN were lower and those of C14:2-AcylCN were greater in HBCS than in NBCS cows. The mRNA abundance of carnitine palmitoyltransferase (CPT)1, muscle isoform (CPT1b) and CPT2 increased from d -49 to early lactation (d 3, d 21), followed by a decline to nearly antepartum values by d 84; this change was not affected by group. In conclusion, over-conditioning around calving seems to be associated with mitochondrial overload, which can result in incomplete fatty acid oxidation in dairy cows.Source: Journal of dairy science. - ISSN 0022-0302 (Vol. 103, no. 5, 2020, str. 4777-4794)Type of material - article, component part ; adult, seriousPublish date - 2020Language - englishCOBISS.SI-ID - 58280195
Author
Ghaffari, Morteza H. |
Hassani, Sadri |
Schuh, Katharina |
Dusel, Georg |
Prehn, Cornelia |
Adamski, Jerzy, molekularna biologija |
Koch, Christian |
Sauerwein, Helga
Topics
acylcarnitine |
body condition score |
carnitine palmitoyltransferase |
acilkarnitin |
ocena telesnega stanja |
karnitin palmitoiltransferaza
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Ghaffari, Morteza H. | |
Hassani, Sadri | |
Schuh, Katharina | |
Dusel, Georg | |
Prehn, Cornelia | |
Adamski, Jerzy, molekularna biologija | 55378 |
Koch, Christian | |
Sauerwein, Helga |
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