Modification of Physicochemical Characteristics of Goat Milk Fat by Feeding Protected High Oleic Sunflower Oil Supplements

: Protein-oil supplements containing high oleic sunflower oil (HOSO) and different proteins were prepared and fed to lactating goats. Milk fat from goats on basal diet had 12.5% oleic acid (C18:1n9), but C18:1n9 increased (P < 0.05) to 19.0% on the keratin protein-oil supplement diet, 19.2% on the casein protein-oil supplement diet, and 25.2% on dry casein (DC) protein-oil supplements diet. Feeding protein-oil supplements increased (P < 0.05) levels of triacylglycerols with 46 and 50 carbons in milk fat and decreased (P < 0.05) solid content in milk fat at 10°C from 34.8% to 23.0% for DC, to 26.5% for casein, and to 29.6% for keratin. The DC protein-oil supplement diet might produce spreadable butter out of the refrigerator.

[1]  J. Fontecha,et al.  Triglyceride analysis by gas chromatography in assessment of authenticity of goat milk fat , 1998 .

[2]  P. Chouinard,et al.  Fatty acid profile and physical properties of milk fat from cows fed calcium salts of fatty acids with varying unsaturation. , 1998, Journal of dairy science.

[3]  T. W. Scott,et al.  Potential to alter the content and composition of milk fat through nutrition. , 1997, Journal of dairy science.

[4]  T. W. Scott,et al.  Effect of feeding different fat supplements on the fatty acid composition of goat milk , 1997 .

[5]  M. Katan,et al.  Butter, margarine and serum lipoproteins. , 1997, Atherosclerosis.

[6]  T. W. Scott,et al.  In-vitro assessment of fat supplements for ruminants , 1997 .

[7]  C. Sims,et al.  Flavor quality and texture of modified fatty acid high monoene, low saturate butter , 1996 .

[8]  C. Sims,et al.  Modification of Fatty Acids in Milk by Feeding Calcium‐Protected High Oleic Sunflower Oil , 1996 .

[9]  M. Noakes,et al.  Modifying the fatty acid profile of dairy products through feedlot technology lowers plasma cholesterol of humans consuming the products. , 1996, The American journal of clinical nutrition.

[10]  T. W. Scott,et al.  Manipulation of the fatty acid composition of milk by feeding protected canola seeds. , 1992, Journal of dairy science.

[11]  R. Grummer,et al.  Effect of feed on the composition of milk fat. , 1991, Journal of dairy science.

[12]  J. A. O'Donnell.  Milk Fat Technologies and Markets: A Summary of the Wisconsin Milk Marketing Board 1988 Milk Fat Roundtable , 1989 .

[13]  R. Moyers,et al.  Lipids extracted from soy products by different procedures , 1979 .

[14]  T. W. Scott,et al.  Foods of ruminant origin with elevated content of polyunsaturated fatty acids. , 1977, World review of nutrition and dietetics.

[15]  C. Henderson.  The effects of fatty acids on pure cultures of rumen bacteria , 1973, The Journal of Agricultural Science.

[16]  C. H. Gordon,et al.  Milk fat with increased polyunsaturated fatty acids. , 1972, Journal of dairy science.

[17]  K. Blaxter,et al.  The effect of linseed oil and of linseed oil fatty acids incorporated in the diet on the metabolism of sheep , 1966, British Journal of Nutrition.