title: [N-metabolism as modelled by metabolism of 15N-labelled wheat in rat experiment].
abstract: Male albino rats of a weight of 90 g received a test ration with 15N-labelled wheat as protein source over a period of 1 to 8 days. The 15N-excess in urine, feces, some organs, the remaining carcass and in the blood was determined in dependence on time. On the basis of two different pool models the N-metabolism values could be calculated. Protein synthesis and disintegration rates calculated by means of the N- and 15N-balances of the pool in the steady state of the pool labelling amounted to 252.9 mg N per day resp 203.0 mg N per day. The calculation based on the time-dependent curve of the daily 15N-excretion in urine resulted in corresponding synthesis and disintegration rates of 197.0 mg N per day and 134.6 mg N per day. Labelling curve and results are discussed.
mesh_terms: D000818:Animals; D004044:Dietary Proteins / Q000378:metabolism*; D005243:Feces / Q000032:analysis; D008297:Male; D008433:Mathematics; D008954:Models, Biological; D009584:Nitrogen / Q000378:metabolism*; D010940:Plant Proteins / Q000378:metabolism*; D051381:Rats; D013997:Time Factors; D014018:Tissue Distribution; D014908:Triticum
chemical_list: D004044:Dietary Proteins; D010940:Plant Proteins; D009584:Nitrogen
vernacular_title: Zum N-Stoffwechsel und seiner Modellierung nach Versuchen mit 15N-markiertemm Weizen an Ratten.