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Variation of minerals and trace elements in laboratory animal diets

Variation of minerals and trace elements in laboratory animal diets

Laboratory Animals 15(4): 299-303

29 laboratory animal diets from 5 manufactures for rats, mice, rabbits, guineapigs, primates and dogs were analysed for calcium, total phosphorus, phytate phosphorus, magnesium, sodium, potassium, iron, zinc and copper. Variations between diets for the same species were found to be much larger than differences between means for different species. The analyses were compared with data in the manufactures' catalogues. The best controlled element was potassium. Most deviations of other elements were distributed in a skewed fashion and quite serious differences between analytical and catalogue data were found. In general, deviations from the catalogue were less than variations between diets. It is recommended that catalogues should give ranges of composition rather than means.

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Accession: 001030609

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PMID: 7341836

DOI: 10.1258/002367781780952834

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