Czech J. Food Sci., 2009, 27(10):S263-S266 | DOI: 10.17221/941-CJFS

Changes in Ewe's Milk Composition in Organic versus Conventional Dairy Farms

I. Revilla1*, M. A. Lurueña-Martínez1, M. A. Blanco-Lopez1, J. Viñuela-Serrano1, A. M. Vivar-Quintana1, C. Palacios2
1 Área de Tecnología de Alimentos, Universidad de Salamanca, E.P.S. de Zamora, 49022 Zamora, Spain
2 Area de Producción Animal, Universidad de Salamanca, Facultad de Ciencias Agrarias y Ambientales, 119-129 Salamanca, Spain, *E-mail: irevilla@usal.es

The aim of this work was to determine the effect of organic production system on ewe's milk quality. Bulk tank ewe's milk from flocks of two production systems (organic and conventional) all of them from the same geographical area (Zamora, Spain) were used to investigate changes in physico-chemical properties including the composition in fatty acids. The metal contents (Fe, Cu, Zn, Mn, Se, Mo, Ba, As, Hg, Pb) and the presence of antibiotics and pesticides in the meat were also studied. The type of production system was seen to elicit a significant effect on pH, total acidity and on the fatty acid composition. Organic milk showed significantly higher values of mono- and polyunsaturated fatty acids, including CLA, while saturated fatty acids decreased. No residues of pesticides or antibiotics were found in any of the samples and regarding metal contents only Fe, Cu and Zn were detected and no differences were observed in their contents.

Keywords: milk composition; pesticides; antibiotics; fatty acids; organic production

Published: June 30, 2009  Show citation

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Revilla I, Lurueña-Martínez MA, Blanco-Lopez MA, Viñuela-Serrano J, Vivar-Quintana AM, Palacios C. Changes in Ewe's Milk Composition in Organic versus Conventional Dairy Farms. Czech J. Food Sci. 2009;27(Special Issue 1):S263-266. doi: 10.17221/941-CJFS.
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    References

    1. Bergamo P., Fedele E., Iannibelli L., Marzillo G. (2003): Fat-soluble vitamin contents and fatty acid composition in organic and conventional Italian dairy products. Food Chemistry, 82: 625-631. Go to original source...
    2. Biondi L., Valvo M.A., Di Gloria M.. Scinardo Tenghi E., Galofaro V., Priolo A. (2008): Changes in ewe milk fatty acids following turning out to pasture. Small Ruminant Research, 75: 17-23. Go to original source...
    3. Chilliard Y., Ferlay A., Mansbridge R.M., Doreau M. (2000): Ruminant milk fat plasticity: nutritional control of saturated, polyunsaturated, trans and conjugated fatty acids. Annals of Zootechnology, 49: 181-205. Go to original source...
    4. Edwards S.A. (2005): Product quality attributes associated with outdoor pig production. Livestock Production Science, 94: 5-14. Go to original source...
    5. European Union (2007): Council Regulation (EC) No 834/2007 of 28 June 2007 on organic production and labelling of organic products and repealing Regulation (EEC) No 2092/91.
    6. Hermansen J.E., Badsberg J.H., Kristensen T., Gundersen V. (2005): Major and trace elements in organically or conventionally produced milk. Journal of Dairy Research, 72: 362-368. Go to original source... Go to PubMed...
    7. I.D.F. (1974): Determination of lactose content of milk. (IDF Standard 28A), International Dair y Federation,Brussels.
    8. Kay J.K., Roche J.R., Kover E.S., Thomson N.A., Baumgard L.H. (2005): A comparison between feeding system (pasture and TMR) and the effect of vitamin E supplementation on plasma and milk fatty acid profiles in dairy cows. Journal of Dairy Research, 72: 322-332. Go to original source... Go to PubMed...
    9. Murrieta C.M., Hess B.W., Rule D.C. (2003): Comparison of acidic and alkaline catalysts for preparation of fatty acid methyl ester from ovine muscle with emphasis on conjugated linoleic acid. Meat Science, 65: 523-529. Go to original source... Go to PubMed...
    10. Nauta W.J., Groen A.F., en Baars T. (2002): Breeding strategies for organic dairy cattle; genotype by environment interaction. In: Proceedings of 4th Organic World Congress IFOAM, Victoria, Canada: 95.
    11. Sundrum A. (2001): Organic livestock farming, a critical review. Livestock Production Science, 67: 207-215. Go to original source...
    12. Tamine A.Y., Robinson R.K. (1999): Yoghourt Science and Technology. Woodhead Publishing Limited, Cambridge.
    13. The European Agency for the Evaluation of Medicinal Products (1998): Veterinary Medicines Evaluation Unit, Maximum Residues Limits Summary Reports. London.
    14. Valvo M.A., Lanza M., Bella M., Fasone V., Scerra M., Biondi L., Priolo A. (2005): Effect of ewe feeding system (grass v. concentrate) on intramuscular fatty acids of lambs raised exclusively on maternal milk. Animal Science, 81: 431-436. Go to original source...
    15. Vicini J., Etherton T., Kris-Etherton P., Ballan J., Denham S., Staub R., Goldstein D., Cady R., McGrath M., Lucy M. (2008): Survey of retail milk composition as affected by label claims regarding farm-management practices. Journal of the American Dietetic Association, 108: 1198-1203. Go to original source... Go to PubMed...

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