title: The effect of energy source on the passage of nitrogen and amino acids to the duodenum in sheep fed on urea or fish meal.
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000821:Animal Feed; D000818:Animals; D004040:Dietary Carbohydrates; D004386:Duodenum / Q000378:metabolism; D005396:Fish Products; D009584:Nitrogen / Q000378:metabolism*; D012417:Rumen / Q000378:metabolism; D012756:Sheep / Q000378:metabolism*; D014508:Urea
chemical_list: D000596:Amino Acids; D004040:Dietary Carbohydrates; D014508:Urea; D009584:Nitrogen