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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

USE OF A MODIFIED RELATIVE DOSE RESPONSE TEST OR VITAMIN A FRACTIONATION TEST FOR DETERMINING VITAMIN A STATUS FROM SERUM IN THE HORSE AND RABBIT.

JARRETT, SALLY HAYDON. January 1986 (has links)
Methods for assessing vitamin A status in the horse and rabbit were developed and evaluated using a modified Relative Dose Response Test (%RDR = A₄-A₀/A₄ X 100, where A₄ and A₀ represent four hours post-feeding and fasting serum total vitamin A levels, respectively) for horses and a Vitamin A Fractionation (VAF) Test monitoring serum levels of vitamin A palmitate, vitamin A acetate and retinol for horses and rabbits. In Experiment 1 (RDR test), 5 horses per treatment group were fed 0 (deficient), 10,000 (control) or 80,000 (excess) I.U. vitamin A palmitate daily, for 30 days. RDR Test was positive (>20%) for all horses receiving diets deficient in vitamin A and negative «20%) for all horses receiving control or excess diets. In Experiment 2 (VAF test), rabbits were fed varying dietary levels of vitamin A palmitate (ranging from 0 to 58000 I.U./kg feed) for up to 87 days. Percentages of retinol and vitamin A palmitate were reflective of vitamin A status. An approaching vita'min A deficiency or toxicity is indicated when percentages of vitamin A palmitate and retinol are more than 1 SD from the means observed for control rabbits (6.2±1.8 and 92.9±3.5, respectively). If a deficiency is approaching then percentage of vitamin A palmitate will be between 21% and 73% and percentage retinol between 8% and 21%. If toxicity is approaching then percentage vitamin A palmitate and retinol will be greater than 21% and less than 73%. Rabbit is normal if percentages are maintained within the ± SD of the mean. Experiment 3 (VAF test) was conducted using the same horses and conditions as in Experiment 1. After 30 days on treatment, percentages of retinol and vitamin A palmitate were significantly lower and higher (P<.05) than controls, for deficient and excess horses, respectively. The percentages of vitamin A palmitate and retinol in deficient horses were intermediate between values observed in horses from the other two treatment groups. If percentage retinol is between 45% and 65% and percentage vitamin A palmitate is between 31% and 45% the horse is approaching deficiency. If the percentage retinol is less than 45% and and vitamin A palmitate is greater than 45%, then the horse is probably approaching toxicity. Results suggests that both RDR and VAF tests can be used to determine vitamin A status before appearance of overt signs of deficiency occur, however only the VAF test is suitable for detecting toxicity.
2

Effect of vitamin A on growth and reproduction of rabbits.

Payne, Audrey Sharon. January 1970 (has links)
No description available.
3

The ability of the dog to utilize vitamin A from vegetable and from animal sources

Bradfield, Dorothy Marie, 1905- January 1937 (has links)
No description available.
4

Effect of vitamin A on growth and reproduction of rabbits.

Payne, Audrey Sharon. January 1970 (has links)
No description available.
5

Biliary metabolites of vitamin D in the chick

LeVan, Leon William. January 1980 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 103-111).
6

Regulation of 1,25-dihydroxyvitamin D₃ action in chicken intestinal mucosa cells

Radparvar, Saeed. January 1984 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographies.
7

The distribution of vitamin B₁₂ in animals and the effects of dietary deficiency

Williams, D. Lloyd January 1967 (has links)
No description available.
8

The role of oxidative stress and vitamin C on vitamin E utilization in humans

Bruno, Richard S., January 2004 (has links)
Thesis (Ph. D.)--Ohio State University, 2004. / Title from first page of PDF file. Document formatted into pages; contains xiv,148 pages; also includes graphics Includes bibliographical references (p. 121-136). Available online via OhioLINK's ETD Center
9

Changes in the concentration of tocopherols in the blood serum of the parturient dairy cow and her neonatal calf

Latschar, Carl Ernest January 2011 (has links)
Typescript, etc.
10

Influence of vitamin E in reproduction in rainbow trout (Salmo gairdneri) /

King, Irena Budzko. January 1985 (has links)
Thesis (Ph. D.)--University of Washington, 1985. / Vita. Bibliography: leaves [144]-152.

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