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Selenium reference ranges in New Zealand cattle
J C Thompson1, R N Thornton, S N Bruere
1Batchelar Animal Health Laboratory, PO Box 536, Palmerston North, New Zealand.
Aim:
To compare serum selenium and liver selenium concentrations with whole blood concentrations in samples taken at the same time from unsupplemented cattle, and to use these comparisons to establish a reference range for use in diagnosing selenium deficiency.
Methods:
Selenium was measured in concurrent whole blood, serum and liver samples obtained from cattle in unsupplemented herds in the Manawatu, Waikato and Wairarapa regions of New Zealand. The results were statistically analysed.
Results:
The revised reference ranges are as follows. [table: see text]
Conclusion:
The serum and liver selenium concentrations used as reference values prior to this study were inaccurate for the detection of selenium deficiency.
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