title: Effect of ration composition and protein level on plasma free tryptophan and ruminal microbial tryptophan content in sheep.
mesh_terms: D000596:Amino Acids / Q000032:analysis / Q000097:blood; D000821:Animal Feed; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D001419:Bacteria / Q000032:analysis / Q000378:metabolism; D001426:Bacterial Proteins / Q000032:analysis; D001798:Blood Proteins / Q000032:analysis*; D002940:Circadian Rhythm; D056890:Eukaryota / Q000032:analysis / Q000378:metabolism; D008297:Male; D009584:Nitrogen / Q000032:analysis; D012417:Rumen / Q000378:metabolism / Q000382:microbiology*; D012756:Sheep / Q000378:metabolism*; D014364:Tryptophan / Q000032:analysis / Q000097:blood*
chemical_list: D000596:Amino Acids; D001426:Bacterial Proteins; D001798:Blood Proteins; D014364:Tryptophan; D009584:Nitrogen