étable (1) lait (1) isotope (1) delta (1) chromatographie (1) carbone (1) Degrees (1) Composition (1) Linoleic acid (1) Origin (1) Values (1) Ruminants (1) Rumen (1) Plants (1) Milk plants (1) Milk (1) Feeds (1) Diet (1) Dairy plants (1) Cows (1) Chromatographic analysis (1) Carbon (1) Fatty acids (1) Utilization (1) Origin (1) régime alimentaire (1) delta (1)