Enhancing alpha-tocopherol and linoleic acid in ewe's milk by feeding emulsified sunflower oil and DL-alpha-tocopheryl acetate in a chemically treated protein matrix.
Chemically treated dietary supplements (CTDS) were prepared with defatted soy flour, sunflower oil, dl-alpha-tocopheryl acetate (TA), and 2,3-butanedione (a generally recognized as safe chemical), and the effects on alpha-tocopherol (VE) concentration and fatty acid profile in ewe's milk were estimated. Ewes fed control diet (CD) had the lowest levels of milk VE (0.66 microg/mL) and serum VE (1.59 microg/mL). Feeding ewes the CD plus 500 IU of TA increased milk and serum VE by 30 and 70%, respectively, compared to ewes fed the CD. The CTDS-fed ewes showed further increased milk and serum VE levels by 40 and 32%, respectively, over those in ewes fed the CD plus 500 IU of TA. Feeding ewes CTDS did not affect milk fat content (3.13%) but altered the fatty acid composition by decreasing the levels of hypercholesteremic fatty acids, while increasing the content of linoleic acid (8.5%). Inclusion of CTDS in ruminant diets might produce nutritionally enhanced milk products.
Lee
Jung Hoon
JH
Department of Food Science and Technology, University of Tennessee, Knoxville, Tennessee 37996, USA. leej@fvsu.edu
Waller
J C
JC
Melton
Sharon L
SL
D000818:Animals; D004032:Diet; D004041:Dietary Fats / Q000008:administration & dosage; D004435:Eating; D004655:Emulsions; D005227:Fatty Acids / Q000032:analysis; D005260:Female; D019787:Linoleic Acid / Q000032:analysis*; D008055:Lipids / Q000032:analysis; D008892:Milk / Q000737:chemistry*; D010938:Plant Oils / Q000008:administration & dosage*; D012756:Sheep; D000074242:Sunflower Oil; D024505:Tocopherols; D024502:alpha-Tocopherol / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000032:analysis* / Q000097:blood
D004041:Dietary Fats; D004655:Emulsions; D005227:Fatty Acids; D008055:Lipids; D010938:Plant Oils; D000074242:Sunflower Oil; D019787:Linoleic Acid; D024502:alpha-Tocopherol; D024505:Tocopherols