Presented at the 2nd Joint European Stable Isotope User Meeting (JESIUM), Presqu'île de Giens, France, 31 August–5 September, 2008.
Special Issue Paper
Multielement (H, C, N, O, S) stable isotope characteristics of lamb meat from different Italian regions†
Article first published online: 14 JUL 2009
Copyright © 2009 John Wiley & Sons, Ltd.
Rapid Communications in Mass Spectrometry
Volume 23, Issue 16, pages 2573–2585, 30 August 2009
How to Cite
Perini, M., Camin, F., Bontempo, L., Rossmann, A. and Piasentier, E. (2009), Multielement (H, C, N, O, S) stable isotope characteristics of lamb meat from different Italian regions. Rapid Commun. Mass Spectrom., 23: 2573–2585. doi: 10.1002/rcm.4140
- Issue published online: 14 JUL 2009
- Article first published online: 14 JUL 2009
- Manuscript Revised: 27 MAY 2009
- Manuscript Accepted: 27 MAY 2009
- Manuscript Received: 30 APR 2009
- Italian Ministry of Education, Universities and Research – PRIN 2005. Grant Number: 2005077710
The study focuses on the 2H/H, 13C/12C, 15N/14N, 18O/16O and 34S/32S values of defatted dry matter (DFDM) and on the 2H/H, 13C/12C and 18O/16O values of the fat fraction of meat samples from various lamb types reared in seven Italian regions, following different feeding regimes (forage, concentrate, milk). The 13C/12C (r = 0.922), 2H/H (r = 0.577) and 18O/16O (r = 0.449) values of fat and DFDM are significantly correlated, the fat values being significantly lower for C and H and higher for O than for DFDM values and the differences between the two fractions not being constant for different lamb types. The feeding regime significantly affected the 13C/12C, 15N/14N, 18O/16O and 2H/H of fat. The DFDM 2H/H, and 18O/16O values, excluding an outlier, are significantly correlated with the corresponding values in meteoric waters, thus allowing us to trace the variability of geoclimatic factors. 15N/14N is influenced by pedoclimatic conditions, whereas 34S/32S is influenced by the sea spray effect and the surface geology of the provenance area. By applying stepwise linear discriminant analysis only the 2H/H of fat was found not to be significant and 97.7% of the samples were correctly assigned to the lamb type and more than 90% cross-validated. With the feeding regime, 97.7% of the samples were both correctly assigned and cross-validated using a predictive model including 13C/12C, 15N/14N, 18O/16O, 34S/32S of DFDM and 18O/16O of fat. Copyright © 2009 John Wiley & Sons, Ltd.