Effect of hyperketonemia on circadian patterns of blood metabolites and milk predicted constituents in dairy cows

  • C. R. Seely Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
  • K. D. Bach Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
  • D. M. Barbano Department of Food Science, College of Agriculture and Life Sciences, Cornell University, Ithaca, NY 14853
  • J. A. A. McArt Department of Population Medicine and Diagnostic Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY 14853
Keywords: non-esterified fatty acids, NEFA, β-hydroxybutyrate, BHB, hyperketonemia, circadian patterns, plasma, milk metabolites

Abstract

Estimates of milk and blood constituents by Fourier-transform mid-infrared (FTIR) analysis of milk offer a promising tool to monitor energy deficit in dairy cows. We sought to explore: 1) diurnal changes in plasma non-esterified fatty acids (NEFA) and β-hydroxybutyrate (BHB) and FTIR estimates of milk BHB and milk predicted blood NEFA (pbNEFA); 2) correlation between plasma BHB and NEFA; and 3) effect of hyperketonemia (HYK) on circadian patterns of plasma and milk metabolites.

Published
2020-09-24
Issue
Section
Research Summaries

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