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Selenium enrichment of table eggs.

D C Bennett1, K M Cheng

  • 1Avian Research Centre, Faculty of Land and Food Systems, University of British Columbia, 2357 Main Mall, Vancouver, British Columbia, Canada, V6T 1Z4. darinb@interchange.ubc.ca

Poultry Science
|September 21, 2010
PubMed
Summary

Feeding laying hens organic selenium up to 5.1 μg/g increased egg selenium levels without impacting hen health or egg production. This demonstrates a practical method for producing selenium-enriched eggs for consumers.

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Area of Science:

  • Animal Nutrition
  • Food Science
  • Trace Elements

Background:

  • Selenium is vital for human health, with potential benefits including cancer risk reduction.
  • Selenium-enriched eggs offer an effective dietary supplement strategy.
  • Limited research exists on high-level organic selenium intake effects in laying hens.

Purpose of the Study:

  • To investigate the impact of elevated dietary organic selenium on laying hen production parameters.
  • To determine the relationship between dietary organic selenium levels and egg selenium concentration.
  • To assess the feasibility of producing selenium-enriched eggs through high-level dietary selenium supplementation.

Main Methods:

  • Three breeds of laying hens were fed diets supplemented with organic selenium (Se yeast) at 1.0, 2.4, or 5.1 μg/g.

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  • A basal diet containing 0.3 μg Se/g (sodium selenite) was used for comparison.
  • Production metrics (feed consumption, egg production, egg mass) and egg selenium content were measured over 4 weeks.

    • Main Results:

    • Dietary selenium concentration did not significantly affect feed consumption, egg production, or egg mass across all breeds.
    • Egg selenium content demonstrated a linear increase with rising dietary selenium levels.
    • Laying hens tolerated dietary organic selenium up to 5.1 μg/g without adverse effects on production or welfare.

    Conclusions:

    • Feeding laying hens organic selenium at levels up to 5.1 μg/g is safe and does not compromise egg production or hen welfare.
    • This supplementation strategy effectively increases selenium concentration in eggs.
    • Selenium-enriched eggs can be practically produced for consumers seeking enhanced selenium intake.