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

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 × 4 Latin squa...

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Bibliographic Details
Published in:British journal of nutrition 2010-07, Vol.104 (1), p.56-66
Main Authors: Shingfield, K. J., Lee, M. R. F., Humphries, D. J., Scollan, N. D., Toivonen, V., Reynolds, C. K., Beever, D. E.
Format: Article
Language:English
Subjects:
Acetic Acid - metabolism
animal growth
Animals
beef
beef quality
Biohydrogenation
Biological and medical sciences
Butyrates - metabolism
Cattle
cattle feeding
Conjugated linoleic acid
Diet
Dietary Fats - metabolism
Dietary Supplements
Dose-Response Relationship, Drug
Duodenum - metabolism
Energy Intake
experimental diets
Fatty Acids, Omega-3 - metabolism
feed composition
Feeding. Feeding behavior
Fermentation
Fish oil
Fish oils
Fish Oils - pharmacology
Fundamental and applied biological sciences. Psychology
Isomerism
lipid metabolism
Lipid Metabolism - drug effects
Lipids
long chain fatty acids
Male
Metabolism
Metabolism and Metabolic Studies
n-3 Fatty acids
nutrient intake
Nutrition research
Propionates - metabolism
Rumen - metabolism
ruminant nutrition
Silage
steers
Trans Fatty Acids - metabolism
trans-Fatty acids
Vertebrates: anatomy and physiology, studies on body, several organs or systems
Zea mays
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Summary: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 × 4 Latin square experiment with 21 d experimental periods to examine the potential of fish oil (FO) 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 weight0·75/d containing 0, 8, 16 and 24 g FO/kg diet DM. Supplements of FO reduced linearly (P 
ISSN:0007-1145
1475-2662
DOI:10.1017/S0007114510000292