Jung Hoon Lee  , Arnold M. Saxton  , Lester O. Pordesimo  , John C. Waller  , Sharon L. Melton  , 
    Protecting Dietary Vitamin C and High Oleic Oil in Feed and its Effect on the Nutritional Profile of Goat Milk,
    Journal of Animal and Veterinary Advances,
    Volume 5,Issue 1,
    2006,
    Pages 30-37,
    ISSN 1680-5593,
    javaa.2006.30.37,
    (https://makhillpublications.co/view-article.php?doi=javaa.2006.30.37)
    Abstract: Protecting dietary vitamin C and high oleic oil from ruminal degradation by formulating these nutrients within a formaldehyde-free feed supplement and its effects on the nutritional profile of goat milk were investigated. Two protein-oil gel supplements (PGS), both containing high oleic sunflower oil (oleic acid source) and ascorbyl palmitate (vitamin C source), one based on casein (C-PGS) and the other based on keratin (K-PGS), were prepared and included in lactating goat diets. Both increased unsaturated fat content in goat milk, but only feeding with C-PGS resulted in a significant increase. K-PGS increased vitamin C in goat blood serum but not in milk. Blood serum vitamin C concentration for protein-oil gel supplement diets and unprotected ascorbyl palmitate diet were similar, so protection of vitamin C was questionable. The two protein-oil gel supplements increased concentration of oleic acid in both blood serum and milk with a corollary decrease in hypercholesteremic fatty acids.
    Keywords: Feed Supplement;protected nutrient;vitamin C;high-oleic oil;goat;milk;ruminant