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Influence of feed and water on the stable isotopic composition of dairy milk

Ehtesham, Emad LU ; Hayman, Alan; Van Hale, Robert and Frew, Russell (2015) In International Dairy Journal 47(August). p.37-45
Abstract
Traceability of dairy products is an important issue for the dairy industry. Empirical studies have demonstrated the utility of stable isotope measurements on milk for verification of origin. However, various drivers influence the isotopic composition of a food stuff, such as rainfall levels or food supplements. Relationships between the isotopic composition (δ2H, δ18O, δ13C and δ15N) of milk fatty acids, the water component of the milk, and feed and farm water from 18 New Zealand dairy farms were studied. Significant relationships between the isotopic composition of milk and both farm water and feed fatty acids were observed. Measurement of both diet and drinking water from each dairy farm enabled the underlying environmental correlations... (More)
Traceability of dairy products is an important issue for the dairy industry. Empirical studies have demonstrated the utility of stable isotope measurements on milk for verification of origin. However, various drivers influence the isotopic composition of a food stuff, such as rainfall levels or food supplements. Relationships between the isotopic composition (δ2H, δ18O, δ13C and δ15N) of milk fatty acids, the water component of the milk, and feed and farm water from 18 New Zealand dairy farms were studied. Significant relationships between the isotopic composition of milk and both farm water and feed fatty acids were observed. Measurement of both diet and drinking water from each dairy farm enabled the underlying environmental correlations to milk fatty acids to be explored by analysis of their respective δ2H values. Development of this technology may provide a diagnostic tool for determining type and the origin of dietary feed utilised in milk production. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
GC, fatty acid, IRMS, milk, stable isotope, Dairy
in
International Dairy Journal
volume
47
issue
August
pages
37 - 45
publisher
Elsevier
external identifiers
  • scopus:84925400010
ISSN
0958-6946
DOI
10.1016/j.idairyj.2015.02.008
language
English
LU publication?
no
id
25b37349-423a-459a-a91e-9c7a38dac3d1 (old id 5257072)
date added to LUP
2015-03-31 10:39:08
date last changed
2017-01-01 05:46:34
@article{25b37349-423a-459a-a91e-9c7a38dac3d1,
  abstract     = {Traceability of dairy products is an important issue for the dairy industry. Empirical studies have demonstrated the utility of stable isotope measurements on milk for verification of origin. However, various drivers influence the isotopic composition of a food stuff, such as rainfall levels or food supplements. Relationships between the isotopic composition (δ2H, δ18O, δ13C and δ15N) of milk fatty acids, the water component of the milk, and feed and farm water from 18 New Zealand dairy farms were studied. Significant relationships between the isotopic composition of milk and both farm water and feed fatty acids were observed. Measurement of both diet and drinking water from each dairy farm enabled the underlying environmental correlations to milk fatty acids to be explored by analysis of their respective δ2H values. Development of this technology may provide a diagnostic tool for determining type and the origin of dietary feed utilised in milk production.},
  author       = {Ehtesham, Emad and Hayman, Alan and Van Hale, Robert and Frew, Russell},
  issn         = {0958-6946},
  keyword      = {GC,fatty acid,IRMS,milk,stable isotope,Dairy},
  language     = {eng},
  number       = {August},
  pages        = {37--45},
  publisher    = {Elsevier},
  series       = {International Dairy Journal},
  title        = {Influence of feed and water on the stable isotopic composition of dairy milk},
  url          = {http://dx.doi.org/10.1016/j.idairyj.2015.02.008},
  volume       = {47},
  year         = {2015},
}