title: Representative rumen sampling.
mesh_terms: D000818:Animals; D005402:Fistula; D007441:Intubation, Gastrointestinal / Q000662:veterinary; D008722:Methods; D012417:Rumen / Q000378:metabolism* / Q000382:microbiology; D012756:Sheep / Q000378:metabolism*; D013048:Specimen Handling