Verification of Egg Farming Systems from The Netherlands and New Zealand Using Stable Isotopes

Journal of Agricultural and Food Chemistry
Karyne M RogersPam Rogers

Abstract

Stable isotopes were used to develop authentication criteria of eggs laid under cage, barn, free range, and organic farming regimens from The Netherlands and New Zealand. A training set of commercial poultry feeds and egg albumen from 49 poultry farms across The Netherlands was used to determine the isotopic variability of organic and conventional feeds and to assess trophic effects of these corresponding feeds and barn, free range, and organic farming regimens on corresponding egg albumen. A further 52 brands of New Zealand eggs were sampled from supermarket shelves in 2008 (18), 2010 (30), and 2014 (4) to characterize and monitor changes in caged, barn, free range, and organic egg farming regimens. Stable carbon (δ(13)C) and nitrogen (δ(15)N) isotopes of 49 commercial poultry feeds and their corresponding egg albumens reveals that Dutch poultry are fed exclusively on a plant-based feed and that it is possible to discriminate between conventional and organic egg farming regimens in The Netherlands. Similarly, it is possible to discriminate between New Zealand organic and conventional egg farming regimens, although in the initial screening in 2008, results showed that some organic eggs had isotope values similar to those of con...Continue Reading

References

Nov 25, 2003·Analytical and Bioanalytical Chemistry·M Boner, H Förstel
Aug 30, 2005·Isotopes in Environmental and Health Studies·Hanns-Ludwig SchmidtRalf Winkler
Mar 8, 2007·Journal of Agricultural and Food Chemistry·Alison S BatemanMark Woolfe
Apr 11, 2009·Journal of Agricultural and Food Chemistry·Karyne M Rogers
Dec 1, 2012·Food Chemistry·Luc RockHarold Richmond

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Citations

Jan 27, 2019·Magnetic Resonance in Chemistry : MRC·Svenja M AckermannMirko Bunzel

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