Document Type

Thesis - Open Access

Award Date

1970

Degree Name

Master of Science (MS)

Department

Animal Science

Abstract

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

Vitamins

South Dakota State University Theses

Format

application/pdf

Number of Pages

53

Publisher

South Dakota State University

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