Differences between concentrate and LM in
18:0, LA, and ALA proportions suggest that unsaturated
dietaryFA had undergone extensive biohydrogenation
by rumen microorganisms, although 18:0 is also
synthesized de novo by elongation of 16:0 (Enser, 1984)
or originates from ruminal biohydrogenation of C18
unsaturated FA (Sauvant and Bas, 2001).