Milk fatty acids as possible biomarkers to early diagnose elevated concentrations of blood plasma nonesterified fatty acids in dairy cows

S. Jorjong, A. van Knegsel, J. Verwaeren, M. Val Lahoz, R.M. Bruckmaier, B. De Baets, B. Kemp, V. Fievez

Research output: Contribution to journalArticleAcademicpeer-review

26 Citations (Scopus)

Abstract

Most cows encounter a state of negative energy balance during the periparturient period, which may lead to metabolic disorders and impaired fertility. The aim of this study was to assess the potential of milk fatty acids as diagnostic tools of detrimental levels of blood plasma nonesterified fatty acids (NEFA), defined as NEFA concentrations beyond 0.6 mmol/L, in a data set of 92 early lactating cows fed a glucogenic or lipogenic diet and subjected to 0-, 30-, or 60-d dry period before parturition. Milk was collected in wk 2, 3, 4, and 8 (n = 368) and blood was sampled weekly from wk 2 to 8 after parturition. Milk was analyzed for milk fatty acids and blood plasma for NEFA. Data were classified as “at risk of detrimental blood plasma NEFA” (NEFA =0.6 mmol/L) and “not at risk of detrimental blood plasma NEFA” (NEFA
Original languageEnglish
Pages (from-to)7054-7064
JournalJournal of Dairy Science
Volume97
Issue number11
DOIs
Publication statusPublished - 2014

Keywords

  • northeastern united-states
  • propylene-glycol
  • early-lactation
  • energy-balance
  • beta-hydroxybutyrate
  • metabolic predictors
  • displaced abomasum
  • culling risk
  • dry period
  • cattle

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