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A comparative study of the absorption of calcium and the availability of phytate-phosphorus in the golden hamster (Mesocricetus auratus) and the laboratory rat

Published online by Cambridge University Press:  09 March 2007

T. G. Taylor
Affiliation:
Department of Nutrition, School of Biochemical and Physiological Sciences, University of Southampton, SouthamptonS09 5NH
J. W. Coleman
Affiliation:
Department of Nutrition, School of Biochemical and Physiological Sciences, University of Southampton, SouthamptonS09 5NH
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Abstract

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1. Balance studies were carried out with rats and golden hamsters (Mesocricetus auratus) given diets high and low in calcium (10.8 and 5.1–5.2 g Ca/kg respectively) and high and low in phytate (3.4 and 1.6 g phytate-phosphorus/kg respectively) in a 2 × 2 factorial experiment.

2. Values for Ca absorption and phytate availability (relative to the amount ingested) and for urinary excretion of Ca and P were significantly higher in the hamster than in the rat for all four diets.

3. Phytate availability was significantly greater on the low-Ca than on the high-Ca diets with both species.

4. Ca absorption was greater on the low-phytate than on the high-phytate diets but the differences were significant only for the hamster.

5. Absorption of both Ca and P was poorly controlled in the hamster compared to the rat.

Type
Papers on General Nutrition
Copyright
Copyright © The Nutrition Society 1979

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