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Effects of dietary Ca on phytate-mineral interaction

Conference · · FASEB Journal (Federation of American Societies for Experimental Biology); (United States)
OSTI ID:5144364
; ; ; ;  [1]
  1. Food and Drug Administration, Washington, DC (United States)
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Phytic acid (PA) added to diet of Japanese quail caused increased mortality, decreased body weight and tissue mineral changes. Increasing dietary Zn to 100 mg/kg to prevent Zn deficiency, caused Mg deficiency with higher mortality, increased relative spleen weight and decreased hemoglobin, Hb. This study was designed to evaluate involvement of dietary Ca in impairment of mineral utilization caused by PA. To avoid magnesium deficiency associated mortality, dietary Mg was increased by 10% above requirement level. Dietary Ca and PA were varied in casein-gelatin diets and were fed to quail from hatching to 8 d of age. At 12.4 g/kg dietary Ca, PA decreased body weight, liver (L) Mn, and tibia (T) ash, Zn and Mg. PA plus higher Zn slightly increased body weight but caused decreased Hb and increased relative spleen weight. Higher Zn alone had very little or no effect. At 8.4 g Ca/kg diet, similar effects of PA to that with 12.4 g Ca/kg were observed. However, PA plus higher Zn caused no adverse effect on Hb and spleen weight. Lower dietary Ca greatly increased L Mn. Lower dietary Ca also increased T Mg and Zn values with PA plus higher Zn. Dietary Ca had no effect on T ash. The results emphasize the importance of mineral balance in diets containing PA.
OSTI ID:
5144364
Report Number(s):
CONF-9104107--
Conference Information:
Journal Name: FASEB Journal (Federation of American Societies for Experimental Biology); (United States) Journal Volume: 5:5
Country of Publication:
United States
Language:
English

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Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALINE EARTH METALS
ANIMALS
BIOLOGICAL EFFECTS
BIRDS
CALCIUM
DIET
ELEMENTS
ESTERS
MAGNESIUM
MANGANESE
METABOLISM
METALS
MORTALITY
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
PHOSPHORIC ACID ESTERS
PHYTIC ACID
TRANSITION ELEMENTS
VERTEBRATES
ZINC