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Effects of high but nontoxic dietary manganese and iron on their metabolism by calves

Journal Article · · J. Dairy Sci.; (United States)
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Sixteen male Holstein calves were fed one of four diets for 18 days in an experiment consisting of 0 and 1000 ppm supplemental manganese and 0 and 1000 ppm added iron as manganese carbonate and ferrous carbonate. The control diet contained 55 ppm manganese and 220 ppm iron. All calves were dosed orally 48 h prior to sacrifice with 500 ..mu..Ci of manganese-54. Small intestinal iron was less in calves fed a high manganese diet, a possible interaction of these two elements at the absorption site. Feeding a high manganese diet tended to decrease iron (total) concentrations in liver and pancreas. When the high manganese diet was supplemented with additional iron, antagonistic effects of manganese on iron were eliminated. Neither iron nor manganese concentrations in tissues were affected by an increase of dietary iron. Manganese-54 content of tissue was reduced by the high manganese diet but was not affected by dietary iron. Total manganese and iron in feces fairly closely reflected dietary intake of each element with no evidence of interaction. Calves fed the high iron diet excreted less manganese-54 in their feces over 2 days. Total iron in blood serum was not affected significantly by the dietary treatments. 22 references, 2 figures, 7 tables.

Research Organization:
Univ. of Georgia, Athens
OSTI ID:
6093493
Journal Information:
J. Dairy Sci.; (United States), Journal Name: J. Dairy Sci.; (United States) Vol. 67:7; ISSN JDSCA
Country of Publication:
United States
Language:
English

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Related Subjects

560305* -- Chemicals Metabolism & Toxicology-- Vertebrates-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ABSORPTION
ANIMALS
BIOLOGICAL MATERIALS
BIOLOGICAL WASTES
BLOOD CIRCULATION
BODY
CALVES
CATTLE
CHEMICAL ANALYSIS
DIET
DIGESTIVE SYSTEM
DISTRIBUTION
DOMESTIC ANIMALS
ELEMENTS
FECES
GASTROINTESTINAL TRACT
GLANDS
INGESTION
INTAKE
INTESTINAL ABSORPTION
INTESTINES
IRON
LIVER
MAMMALS
MANGANESE
MATERIALS
METABOLISM
METALS
ORGANS
RUMINANTS
SYNERGISM
TISSUE DISTRIBUTION
TRANSITION ELEMENTS
UPTAKE
VERTEBRATES
WASTES