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Journal of Animal and Veterinary Advances
Year: 2006  |  Volume: 5  |  Issue: 1  |  Page No.: 30 - 37

Protecting Dietary Vitamin C and High Oleic Oil in Feed and its Effect on the Nutritional Profile of Goat Milk

Jung Hoon Lee, Arnold M. Saxton, Lester O. Pordesimo, John C. Waller and Sharon L. Melton    

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.

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