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 Swick, R. W. Articles by Baumann, C. A. Search for Related Content PubMed Articles by Swick, R. W. Articles by Baumann, C. A.

The Effect of Thyroid on Carotenoid Metabolism in Swine¹

University of Wisconsin²

Abstract

1. Weanling pigs were depleted of vitamin A and were then rendered either hyperthyroid with iodinated casein or hypothyroid with thiouracil, and then were given carotene for 16–21 days. Essentially similar stores of vitamin A were found in the livers and kidneys of the 3 groups, with a suggestion of increased stores in hyperthyroid animals that were free from diarrhea.
   
2. When a large dose of carotene was given six to seven hours before slaughter, there was a marked increase (up to 20-fold) in the concentration of vitamin A in the mesenteric lymph and a much smaller rise in the blood plasma and intestinal wall. The results favor the view that carotene is converted into vitamin A in the intestinal wall of the pig.
   

¹ Published with the approval of the Director of the Wisconsin Agricultural Experiment Station, Madison.

² Departments of Biochemistry and Animal Husbandry, Madison, Wisconsin.