Circulating amino acids in blood plasma during the peripartal period in dairy cows with different liver functionality index

Journal of Dairy Science
Z ZhouErminio Trevisi

Abstract

The liver functionality index (LFI) measures the changes of albumin, cholesterol, and bilirubin concentrations between 3 and 28 d postpartum. This composite index, based on variables with direct relevance to liver-specific plasma protein synthesis (albumin), hepatic/intestinal lipoprotein synthesis (cholesterol), and clearance of breakdown products of heme catabolism (bilirubin), provides a tool for evaluating manifestations of hepatic disease. Both energy and protein metabolism are likely to be affected by various physiological challenges in this period but have not been tested systematically. The present study was conducted to profile AA in cows with high or low LFI during the peripartal period and relate this to production outcomes. Eighteen multiparous cows were used from -21 through 28 d around parturition and divided retrospectively into the high or low LFI group. Blood samples were obtained on -21, -14, -7, 1, 3, 7, 10, 14, 17, 21, and 28 d relative to calving, and biomarkers and AA in plasma were measured. Grouping based on LFI resulted in 8 cows with high LFI (HLFI) and 10 cows with low LFI (LLFI). Although the temporal response in dry matter intake (DMI, 16.3 kg/d) and body condition score (2.56) did not differ, cows ...Continue Reading

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Citations

Jun 12, 2018·Current Drug Metabolism·Feiran WangShengli Li
Mar 17, 2020·Animal : an International Journal of Animal Bioscience·R C LopesM P Gionbelli
May 12, 2020·Animal : an International Journal of Animal Bioscience·A MinutiE Trevisi
Apr 13, 2020·Journal of Dairy Science·J W McFaddenH M White
Aug 19, 2020·Journal of Animal Science·Danielle N ColemanJuan J Loor
Oct 16, 2018·Animal Science Journal = Nihon Chikusan Gakkaihō·Mabrouk ElsabaghToshihisa Sugino
Aug 5, 2020·Journal of Dairy Science·Morteza H GhaffariHelga Sauerwein

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