Effect of incremental amounts of fish oil in the diet on ruminal lipid metabolism in growing steers

K. J. Shingfield*, M. R. F. Lee, D. J. Humphries, N. D. Scollan, V. Toivonen, C. K. Reynolds, D. E. Beever

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

33 Citations (Scopus)

Abstract

Based on the potential benefits to human health, there is interest in developing sustainable nutritional strategies to enhance the concentration of long-chain n-3 fatty acids in ruminant-derived foods. Four Aberdeen Angus steers fitted with rumen and duodenal cannulae were used in a 4 x 4 Latin square experiment with 21d experimental periods to examine the potential of fish oil (170) in the diet to enhance the supply of 20: 5n-3 and 22 : 6n-3 available for absorption in growing cattle. Treatments consisted of total mixed rations based on maize silage fed at a rate of 85 g DM/kg live weight(0.75)/d containing 0, 8, 16 and 24g FO/kg diet DM. Supplements of FO reduced linearly (P

Original languageEnglish
Pages (from-to)56-66
Number of pages11
JournalBritish Journal of Nutrition
Volume104
Issue number1
DOIs
Publication statusPublished - 14 Jul 2010

Keywords

  • DUODENAL FLOW
  • UNSATURATED FATTY-ACIDS
  • GRASS-SILAGE
  • trans-Fatty acids
  • CONJUGATED LINOLEIC-ACID
  • SUNFLOWER OIL
  • Conjugated linoleic acid
  • MILK-FAT
  • BIOHYDROGENATION
  • RUMEN
  • LACTATING DAIRY-COWS
  • n-3 Fatty acids
  • Biohydrogenation
  • MAIZE SILAGE
  • Fish oil

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