title: The digestion of hay administered to cows through rumen fistulas.
mesh_terms: D000818:Animals; D002417:Cattle; D004063:Digestion; D005260:Female; D005402:Fistula; D041981:Gastrointestinal Tract / Q000502:physiology*; D006801:Humans; D012107:Research Design; D012417:Rumen
keywords: GASTROINTESTINAL SYSTEM/physiology