[en] The current cattle selection program for dairy cattle
in the Walloon region of Belgium does not consider the
relative content of the different fatty acids (FA) in milk.
However, interest by the local dairy industry in differentiated
milk products is increasing. Therefore, farmers
may be interested in selecting their animals based
on the fat composition. The aim of this study was to
evaluate the feasibility of genetic selection to improve
the nutritional quality of bovine milk fat. The heritabilities
and correlations among milk yield, fat, protein,
and major FA contents in milk were estimated. Heritabilities
for FA in milk and fat ranged from 5 to 38%.
The genetic correlations estimated among FA reflected
the common origin of several groups of FA. Given these
results, an index including FA contents with the similar
metabolic process of production in the mammary gland
could be used, for example, to increase the monounsaturated
and conjugated fatty acids in milk. Moreover,
the genetic correlations between the percentage of fat
and the content of C14:0, C12:0, C16:0, and C18:0 in
fat were −0.06, 0.55, 0.60, and 0.84, respectively. This
result demonstrates that an increase in fat content is
not directly correlated with undesirable changes in FA
profile in milk for human health. Based on the obtained
genetic parameters, a future selection program to improve
the FA composition of milk fat could be initiated.
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Bibliography
Bobe, G., D. C. Beitz, A. E. Freeman, and G. L. Lindberg. 1999. Associations among individual proteins and fatty acids in bovine milk as determined by correlations and factor analyses. J. Dairy Res. 66:523-536.
Bormann, J., G. R. Wiggans, T. Druet, and N. Gengler. 2003. Withinherd effects of age at test-day and lactation stage on test-day yields. J. Dairy Sci. 86:3765-3774.
Chilliard, Y., A. Ferlay, and M. Doreau. 2001. Contrôle de la qualité nutritionnelle des matières grasses du lait par l'alimentation des vaches laitières: Acides gras trans, polyinsaturés, acide linoléique conjugué. INRA Prod. Anim. 14:323-335.
Chilliard, Y., A. Ferlay, R. M. Mansbridge, and M. Doreau. 2000. Ruminant milk fat plasticity: Nutritional control of saturated, polyunsatured, trans and conjugated fatty acids. INRA Ann. Zootech. 49:181-205.
Collomb, M., and T. Bühler. 2000. Analyse de la composition en acides gras de la graisse de lait. Mitt. Lebensmitteluntersuchung Hyg. 91:306-332.
Dorey, F., D. Brodin, J.-F. Le Querler, and S. Kudzal-Savoie. 1988. Analyse des acides gras du beurre par chromatographie en phase gazeuse couplée avec la spectrométrie de masse. IAA (June):437-441.
Druet, T., F. Jaffrézic, and V. Ducrocq. 2005. Estimation of genetic parameters for test day records of dairy traits in the first three lactations. Genet. Sel. Evol. 37:257-271.
Edwards, R. A., J. W. B. King, and I. M. Yousef. 1973. A note on the genetic variation in the fatty acid composition of cow milk. Anim. Prod. 16:307-310.
Gengler, N., G. R. Wiggans, and A. Gillon. 2004. Estimated heterogeneity of phenotypic variance of test-day yield with a structural variance model. J. Dairy Sci. 87:1908-1916.
Grummer, R. R. 1991. Effect of feed on the composition of milk fat. J. Dairy Sci. 74:3244-3257.
Hu, F. B., M. J. Stampfer, J. E. Manson, A. Ascherio, G. A. Colditz, F. E. Speizer, C. H. Hennekens, and W. C. Willet. 1999. Dietary saturated fat and their food sources in relation to the risk of coronary heart disease in women. Am. J. Clin. Nutr. 70:1001-1008.
Jensen, R. G. 1995. Handbook of Milk Composition. Acad. Press, New York, NY.
Jorjani, H., L. Klei, and U. Emanuelson. 2003. A simple method for weighted bending of genetic (co)variance matrices. J. Dairy Sci. 86:677-679.
Karijord, Ø., N. Standal, and O. Syrstad. 1982. Sources of variation in composition of milk fat. Z. Tierzucht. Zuchtungsbiol. 99:81-93.
Lidauer, M., and E. A. Mäntysaari. 1999. Multiple trait reduced rank random regression test-day model for production traits. Interbull Bull. 22:74-80.
Lock, A. L., and P. C. Garnsworthy. 2003. Seasonal variation in milk conjugated linoleic acid and Δ9 -desaturase activity in dairy cows. Livest. Prod. Sci. 79:47-59.
Misztal, I. 2007. BLUPF90 family of programs. University of Georgia. http://nce.ads.uga.edu/-ignacy/numpub/blupf90/ Accessed Jan. 2, 2007.
Noakes, M., P. J. Nestel, and P. M. Clifton. 1996. Modifying the fatty acid profile of dairy product through feedlot technology lowers plasma cholesterol of human consuming the products. Am. J. Clin. Nutr. 63:42-46.
Othmane, M. H., M. Ben Hamouda, and H. Hammami. 2004. Multivariate animal model estimates of genetic, environmental and phenotypic correlations for early lactation milk yield and composition in Tunisian Holstein-Friesians. Interbull Bull. 32:129-132.
Palmquist, D. L., A. D. Beaulieu, and D. M. Barbano. 1993. Feed and animal factors influencing milk fat composition. J. Dairy Sci. 76:1753-1771.
Parodi, P. W. 1999. Conjugated linoleic acid and other anticarcinogenic agents of bovine milk fat. J. Dairy Sci. 82:1339-1349.
Renner, E., and U. Kosmack. 1974a. Genetische Aspekte zur Fettsäurenzusammensetzung des Milchfettes. 2. Fettsäurenmuster der Milch von Nachkommenpopulationen. Zuechtungskunde 46:217-226.
Renner, E., and U. Kosmack. 1974b. Genetische Aspekte zur Fettsäurenzusammensetzung des Milchfettes. 2. Genetische Korrelationen zum Fettgehalt und zur Fettleistung. Zuechtungskunde. 46:257-264.
Roman, R. M., and C. J. Wilcox. 2000. Bivariate animal model estimates of genetic, phenotypic, and environmental correlations for production, reproduction, and somatic cells in Jerseys. J. Dairy Sci. 83:829-835.
Simopoulos, A. P. 2003. Importance of the ratio of omega-6/omega-3 essential fatty acids: Evolutionary aspects. World Rev. Nutr. Diet. 92:1-22.
Soyeurt, H., P. Dardenne, A. Gillon, C. Croquet, S. Vanderick, P. Mayeres, C. Bertozzi, and N. Gengler. 2006a. Variation in fatty acid contents of milk and milk fat within and across breeds. J. Dairy Sci. 89:4858-4865.
Soyeurt, H., P. Dardenne, G. Lognay, D. Veselko, P. Mayeres, and N. Gengler. 2006b. Estimating fatty acid content in cow milk using mid-infrared spectrometry. J. Dairy Sci. 89:3690-3695.
Veerkamp, R. F., and M. E. Goddard. 1998. Covariance functions across herd production levels for test day records on milk, fat and protein yields. J. Dairy Sci. 81:1690-1701.
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