Proportion (2) Milk (2) Matter (2) Legumes (2) Grasses (2) comportement (1) bétail de boucherie (1) protéine (1) nutriment (1) modèle (1) lait (1) viande (1) animal (1) in situ (1) analyse (1) herbe (1) effet (1) détergent (1) bovins (1) Trials (1) Tannins (1) Social sciences (1) Ruminants (1) Production (Economic theory) (1) Population (1) Performance (1) Milk yield (1) Microorganisms (1) Meta-analysis (1) Meat--Quality (1)