Thesis - Open Access
Master of Science (MS)
The purpose of this experiment was to determine the need for vitamin A and vitamin D supplements with rations composed of various levels or corn silage and corn grain when fed to cattle. Early investigations with vitamin D demonstrated that the reduced intensity or sunlight during the winter months resulted in decreased cutaneous formation of vitamin D and that dark- skinned animals synthesized less vitamin D than light skinned animals under given conditions of light intensity. Thus this experiment was conducted with Angus and Angus x Hereford crossbred steers and, to the extent possible under seasonal conditions considered to be optimum for the demonstration of any beneficial effect of supplementary vitamin D on performance.
Library of Congress Subject Headings
Beef cattle -- Feeding and feeds
South Dakota State University Theses
Number of Pages
South Dakota State University
King, Harold Richard, "Supplementation with Vitamins A and D of Beef Cattle Finishing Rations Containing Various Levels of Carotene from Corn Silage and Corn Grain" (1970). Electronic Theses and Dissertations. 3792.