Genetic variation in bovine milk fat composition

W.M. Stoop

Research output: Thesisinternal PhD, WU

Abstract

In her thesis, Stoop shows that there is considerable genetic variation in milk fat composition, which opens opportunities to improve milk fat composition by selective breeding. Short and medium chain fatty acids had high heritabilities, whereas variation due to herd (mainly feed effects) was moderate. Long chain fatty acids had moderate heritabilities, whereas variation due to herd was high. Several genomic regions (QTL) with effect on short and medium chain, long chain, or both types of fatty acids were identified. Differences in results could be explained by the origin of the fatty acids; short and medium chain fatty acids are predominantly synthesized by the cow in the mammary gland, whereas long chain fatty acid are mainly of dietary origin. Results show that milk fat composition can be improved by selective breeding, which offers opportunities to meet consumers’ demands regarding health and technological aspects.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • Wageningen University
Supervisors/Advisors
  • van Arendonk, Johan, Promotor
  • Bovenhuis, Henk, Co-promotor
Award date6 Apr 2009
Place of Publication[S.l.]
Print ISBNs9789085853558
Publication statusPublished - 6 Apr 2009

Keywords

  • milk
  • milk fat
  • milk composition
  • genetic variation
  • selection
  • animal breeding
  • selective breeding
  • fatty acids

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