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Vitamin A Nutrition in Domestic Cats

Freytag, Tammy

ISBN 10: 3838304977 / ISBN 13: 9783838304977
Published by LAP Lambert Academic Publishing AG & Co KG
New Condition: New Soft cover
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2009. Paperback. Num Pages: 140 pages, black & white illustrations. BIC Classification: MZ. Category: (G) General (US: Trade). Dimension: 229 x 153 x 9. Weight in Grams: 226. . . . . . Books ship from the US and Ireland. Bookseller Inventory # V9783838304977

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Bibliographic Details

Title: Vitamin A Nutrition in Domestic Cats

Publisher: LAP Lambert Academic Publishing AG & Co KG

Binding: Soft cover

Book Condition:New

About this title


Vitamin A is essential for all vertebrates. Birth defects may occur with either deficiency or excess vitamin A. High levels of vitamin A occur in some commercial cat foods due to the use of liver. Toxicity, teratogenicity, and metabolism of vitamin A were the focus of the research. The first objective was to define a safe upper level of vitamin A for cats during gestation. It was demonstrated that a high level of vitamin A added to the diets had potential to cause birth defects in the kittens, but not toxicity in the queen. The second study examined chronic vitamin A toxicity in female cats. It was found that cats in this study consumed far more vitamin A per kg body weight and had fewer signs of toxicity than reported cases in other species. A tracer was used to investigate whether cats given diets with high levels of vitamin A had the ability to safely metabolize excess vitamin A. Cats given a high vitamin A diet were able to efficiently remove it from plasma. Pet food manufacturers should find this information useful for formulating healthy cat foods for both gestating queens and adult cats.

About the Author:

Tammy Freytag received a B.A. in Biological Sciences at the University of California, Santa Barbara & Ph.D. in Nutritional Toxicology at the University of California, Davis. She is currently a chemist for the United States Department of Agriculture, Agriculture Research Service, Western Human Nutrition Research Center in Davis, California.

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