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The effects of feeding various forages on fatty acid composition of bovine milk fat: A review

Author

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  • P. Kalač

    (Faculty of Agriculture, University of South Bohemia, České Budějovice, Czech Republic)

  • E. Samková

    (Faculty of Agriculture, University of South Bohemia, České Budějovice, Czech Republic)

Abstract

The nutritional image of bovine milk fat has suffered for years because of the association of saturated fatty acids and coronary heart disease. Thus the alteration of fatty acid composition has been a long-term strategy. Forages, even though containing a relatively low level of lipids, are the cheapest and often the major source of beneficial unsaturated fatty acids in ruminant diets. Recent progress in the research of factors affecting fatty acid content and composition in fresh and preserved forages and the associations between feeding such forages and milk fat profile are reviewed. Milk from cows grazed or fed fresh forage, especially from species-rich grasslands or forage legumes, has a considerably higher ratio of unsaturated to saturated fatty acids and a higher content of nutritionally beneficial trans-fatty acids (e.g. CLA, vaccenic acid) than milk from cows fed silage or hay. Grass and legume silages seem to affect the fatty acid profile more propitiously than maize silage.

Suggested Citation

  • P. Kalač & E. Samková, 2010. "The effects of feeding various forages on fatty acid composition of bovine milk fat: A review," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 55(12), pages 521-537.
    • Handle: RePEc:caa:jnlcjs:v:55:y:2010:i:12:id:2485-cjas
    DOI: 10.17221/2485-CJAS
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    References listed on IDEAS

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    1. O. Hanuš & J. Vegricht & J. Frelich & A. Macek & M. Bjelka & F. Louda & L. Janů, 2008. "Analysis of raw cow milk quality according to free fatty acid contents in the Czech Republic," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(1), pages 17-30.
    2. J. Frelich & M. Šlachta & O. Hanuš & J. Špička & E. Samková, 2009. "Fatty acid composition of cow milk fat produced on low-input mountain farms," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 54(12), pages 532-539.
    3. Z.L. Liu & D.P. Yang & P. Chen & S.B. Lin & X.Y. Jiang & W.S. Zhao & J.M. Li & W.X. Dong, 2008. "Effect of dietary sources of roasted oilseeds on blood parameters and milk fatty acid composition," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 53(5), pages 219-226.
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    Cited by:

    1. M. Johansson & O. Placha & J. Pickova & A. Andrén & G. Zamaratskaia & E. Spörndly & M. Åkerstedt, 2013. "Impact of crude protein content in silage and concentrate on protein and fatty acid profiles in bovine milk," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 58(7), pages 304-312.
    2. Renáta TOUŠOVÁ & Luděk STÁDNÍK & Jaromír DUCHÁČEK, 2013. "Effects of season and time of milking on spontaneous and induced lipolysis in bovine milk fat," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 31(1), pages 20-26.

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