found similar
results for c9,t11-CLA in subcutaneous fat from pigs (R2=0.92,
RMSECV=2 mg g−1 fat) compared to beef subcutaneous fat in the
present study. In contrast, in two separate studies Pérez-Juan et al.
(2010; R2=0.68, RMSECV=11mg g−1 fat, RPD=1.67) and Pérez-
Marín et al. (2009; R2=0.39, RMSECV=4.70 mg g−1 fat, RPD=1.3)
reported that NIRS more reliably predicted the C18:2n−6 content of
subcutaneous fat from pigs than found in the present study for beef.
However, these were still not accurate enough to be used for screening
purposes. This lack of agreement between studies could be due to
differences in the variability of the samples. Indeed, the FA studied in the
present work showed a wider range of variation than that found in the
previous studies with
subcutaneous fat from swine which likely arose from either the different
feeding regimes used in this study or different levels between species
(pig vs. cattle, that is monogastric vs. ruminant due to complexity of the
rumen environment).