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Transfer of linoleic and linolenic acid from feed to milk in cows fed isoenergetic diets differing in proportion and origin of concentrates and roughages

Published online by Cambridge University Press:  19 May 2010

Ratchaneewan Khiaosa-ard ,
Fenja Klevenhusen ,
Carla R Soliva ,
Michael Kreuzer  and
Florian Leiber
Ratchaneewan Khiaosa-ard
Affiliation:
ETH Zurich, Institute of Plant, Animal and Agroecosystem Sciences, Universitaetstrasse 2, CH-8092Zurich, Switzerland
Fenja Klevenhusen
Affiliation:
ETH Zurich, Institute of Plant, Animal and Agroecosystem Sciences, Universitaetstrasse 2, CH-8092Zurich, Switzerland
Carla R Soliva
Affiliation:
ETH Zurich, Institute of Plant, Animal and Agroecosystem Sciences, Universitaetstrasse 2, CH-8092Zurich, Switzerland
Michael Kreuzer
Affiliation:
ETH Zurich, Institute of Plant, Animal and Agroecosystem Sciences, Universitaetstrasse 2, CH-8092Zurich, Switzerland
Florian Leiber*
Affiliation:
ETH Zurich, Institute of Plant, Animal and Agroecosystem Sciences, Universitaetstrasse 2, CH-8092Zurich, Switzerland
*
*For correspondence; e-mail: [email protected]
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Abstract

The transfer of ingested α-linolenic acid (ALA) and linoleic acid (LA) determines the nutritional quality of milk, but the factors determining this transfer are unclear. The present experiment investigated the influence of roughage to concentrate proportions and the effect of concentrate types on milk fat composition. Respectively, six lactating dairy cows were fed one of three isoenergetic (5·4±0·05 MJ net energy for lactation/kg dry matter; DM) and isonitrogenous (215±3·5 g crude protein/kg DM) diets, consisting of ryegrass hay only (33 g fatty acids/kg DM; ALA-rich, no concentrate), maize (straw, whole maize pellets and gluten; 36 g fatty acids/kg DM; LA-rich; 560 g concentrate/kg DM), or barley (straw and grain plus soybean meal; 19 g fatty acids/kg DM; LA-rich; 540 g concentrate/kg DM). The fatty acid composition of feeds and resulting milk fat were determined by gas chromatography. The ALA concentration in milk fat was highest (P<0·001) with the hay-diet, but the proportionate transfer of ALA from diet to milk was lower (P<0·001) than with the maize- or barley-diets. The LA concentration in milk fat was highest with the maize-diet (P<0·05, compared with hay) but relative transfer rate was lower (P=0·01). The transfer rates of ALA and LA were reciprocal to the intake of individual fatty acids which thus contributed more to milk fat composition than did roughage to concentrate proportions. The amount of trans-11 18:1 in milk fat was lowest with the barley-diet (P<0·001) and depended on the sum of ALA and LA consumed. The milk fat concentration of cis-9, trans-11 18:2 (rumenic acid) was more effectively promoted by increasing dietary LA (maize) than ALA (hay). Amounts of 18:0 secreted in milk were four (maize) to seven (hay) times higher than the amounts ingested. This was suggestive of a partial inhibition of biohydrogenation in the maize-diet, possibly caused by the high dietary LA level.

Keywords

Fatty acidsrumenic acidvaccenic acidbiohydrogenationmaizebarleygrass hay
Type
Research Article
Information
Journal of Dairy Research , Volume 77 , Issue 3 , August 2010 , pp. 331 - 336
Copyright
Copyright © Proprietors of Journal of Dairy Research 2010

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References

ALP (Agroscope Liebefeld-Posieux) 2008 [Feeding Recommendations and Nutrient Tables] (in German). Online version. (Ed ALP, Posieux, Switzerland). http://www.alp.admin.ch/dokumentation/00611/00631/index.html?lang=de. Accessed on April 2, 2009Google Scholar
AlZahal, O, Or-Rashid, MM, Greenwood, SL, Douglas, MS & McBride, BW 2009 The effect of dietary fiber level on milk fat concentration and fatty acid profile of cows fed diets containing low levels of polyunsaturated fatty acids. Journal of Dairy Science 92 1108–1116Google Scholar
Barceló-Coblijn, G & Murphy, EJ 2009 Alpha-linolenic acid and its conversion to longer chain n-3 fatty acids: Benefits for human health and a role in maintaining tissue n-3 fatty acid levels. Progress in Lipid Research 48 355–374Google Scholar
Benjamin, S & Spener, F 2009 Conjugated linoleic acids as functional food: an insight into their health benefits. Nutrition & Metabolism 6 36Google Scholar
Chilliard, Y, Glasser, F, Ferlay, A, Bernard, L, Rouel, J & Doreau, M 2007 Diet, rumen biohydrogenation and nutritional quality of cow and goat milk fat. European Journal of Lipid Science and Technology 109 828–855CrossRefGoogle Scholar
Dewhurst, RJ, Shingfield, KJ, Lee, MRF & Scollan, ND 2006 Increasing the concentrations of beneficial polyunsaturated fatty acids in milk produced by dairy cows in high-forage systems. Animal Feed Science and Technology 131 168–206CrossRefGoogle Scholar
Griinari, JM, Corl, BA, Lacy, SH, Chouinard, PY, Nurmela, KVV & Bauman, DE 2000 Conjugated linoleic acid is synthesized endogenously in lactating dairy cows by Δ9–desaturase. Journal of Nutrition 130 2285–2291CrossRefGoogle Scholar
Jenkins, TC, Wallace, RJ, Moate, PJ & Mosley, EE 2008 Board invited review: Recent advances in biohydrogenation of unsaturated fatty acids within the rumen microbial ecosystem. Journal of Animal Science 86 397–412Google Scholar
Jouany, J-P, Lassalas, B, Doreau, M & Glasser, F 2007 Dynamic features of the rumen metabolism of linoleic acid, linolenic acid and linseed oil measured in vitro. Lipids 42 351–360CrossRefGoogle ScholarPubMed
Khiaosa-Ard, R, Bryner, SF, Scheeder, MRL, Wettstein, H-R, Leiber, F, Kreuzer, M & Soliva, CR 2009 Evidence for the inhibition of the terminal step of ruminal α-linolenic acid biohydrogenation by condensed tannins. Journal of Dairy Science 92 177–188CrossRefGoogle ScholarPubMed
Klevenhusen, F, Bernasconi, SM, Kreuzer, M & Soliva, CR 2010 Experimental validation of the IPCC default values for ruminant-derived methane and its carbon isotope signature. Animal Production Science in pressCrossRefGoogle Scholar
Leiber, F, Scheeder, MRL, Wettstein, HR & Kreuzer, M 2004 Milk fatty acid profile of cows under the influence of alpine hypoxia and high mountainous forage quality. Journal of Animal and Feed Sciences 13 (Suppl 1) 693–696Google Scholar
Leiber, F, Kreuzer, M, Nigg, D, Wettstein, HR & Scheeder, MRL 2005 A study on the causes for the elevated n-3 fatty acids in cows' milk of alpine origin. Lipids 40 191–202Google Scholar
Leiber, F, Tsvetkova, V, Petrova, I, Kreuzer, M & Scheeder, MRL 2010 Two cases of grazing sheep with abundance of trans octadeca fatty acids in milk fat. Milchwissenschaft – Milk Science International 65 73–76Google Scholar
Moate, PJ, Boston, RC, Jenkins, TC & Lean, IJ 2008 Kinetics of ruminal lipolysis of triacyglycerol and biohydrogenation of long-chain fatty acids: new insights from old data. Journal of Dairy Science 91 731–742CrossRefGoogle Scholar
Mosley, EE, Powell, GL, Riley, MB & Jenkins, TC 2002 Microbial biohydrogenation of oleic acid to trans isomers in vitro. Journal of Lipid Research 43 290–296Google Scholar
Shingfield, KJ, Salo-Väänänen, P, Pahkala, E, Toivonen, V, Jaakkola, S, Piironen, V & Huhtanen, P 2005 Effect of forage conservation method, concentrate level and propylene glycol on the fatty acid composition and vitamin content of cows' milk. Journal of Dairy Research 72 349–361Google Scholar
Suter, B, Grob, K & Pacciarelli, B 1997 Determination of fat content and fatty acid composition through 1-min transesterification in the food sample; principles. Zeitschrift für Lebensmittel-Untersuchung und -Forschung A 204 252–258CrossRefGoogle Scholar
Tsiplakou, E & Zervas, G 2008 Comparative study between sheep and goats on rumenic acid and vaccenic acid in milk fat under the same dietary treatments. Livestock Science 119 87–94CrossRefGoogle Scholar
Van Dorland, HA, Kreuzer, M, Leuenberger, H & Wettstein, HR 2008 Comparative potential of white and red clover to modify the milk fatty acid profile of cows fed ryegrass-based diets from zero-grazing and silage systems. Journal of the Science of Food and Agriculture 88 77–85Google Scholar
Van Soest, PJ, Robertson, JB & Lewis, BA 1991 Methods for dietary fiber, neutral detergent fiber, and nonstarch polysaccharides in relation to animal nutrition. Journal of Dairy Science 74 3583–3597CrossRefGoogle ScholarPubMed