HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Kincaid, R. L. Articles by Hampton, D. L. Search for Related Content PubMed Articles by Kincaid, R. L. Articles by Hampton, D. L.

Effect of Added Dietary Selenium on Metabolism and Tissue Distribution of Radioactive and Stable Selenium in Calves

University of Georgia, Athens 30602

Abstract

Stable selenium content and ⁷⁵Se retention of an oral ⁷⁵Se dose were determined in tissues of calves fed either 0, .1, or 1.0 ppm supplemental selenium with a practical diet containing .3 ppm natural selenium. Kidney and small intestinal retentions of ⁷⁵Se were very sensitive to dietary level and were reduced about 35% and 65% with .1 and 1.0 ppm added selenium. In most other tissues, ⁷⁵Se was reduced (P>.05) with 1.0 ppm added dietary selenium. Stable selenium contents were not elevated in any tissue sampled with .1 ppm supplemental selenium. Feeding 1.0 ppm added selenium to calves for 28 days, however, elevated selenium levels in the liver 192%, heart 88%, and blood 64%; but increases in the kidney, muscle, and pancreas were not significant. Specific activities of ⁷⁵Se were lowered significantly in the kidney, blood, liver, and heart with 1.0 ppm added selenium, indicating reduced selenium retention and/or increased tissue turnover rate. Calf weight gains were not affected by dietary selenium supplementation.

¹ Department of Animal and Dairy Science.