title: The use of lactating ewes in evaluating protein sources for ruminants.
mesh_terms: D000821:Animal Feed; D000818:Animals; D004044:Dietary Proteins; D005260:Female; D007774:Lactation; D008722:Methods; D011247:Pregnancy; D012417:Rumen / Q000378:metabolism; D012756:Sheep
chemical_list: D004044:Dietary Proteins