title: Influence of certain nutritional and physiological factors on urea toxicity in sheep.
mesh_terms: D000367:Age Factors; D000641:Ammonia / Q000097:blood; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D004044:Dietary Proteins; D005215:Fasting; D007928:Lethal Dose 50; D009584:Nitrogen / Q000097:blood; D011041:Poisoning / Q000662:veterinary*; D012756:Sheep; D012757:Sheep Diseases; D014508:Urea / Q000008:administration & dosage / Q000633:toxicity*
chemical_list: D004044:Dietary Proteins; D000641:Ammonia; D014508:Urea; D009584:Nitrogen