title: [Methodic recommendations for the determination of whole body protein synthesis rates in tracer studies].
abstract: Methodical recommendations are suggested--predominantly for laboratory and small animals (rats and young chickens)--for the determination of parameters of the protein metabolism of the whole body after single doses of a mixture of 15N labelled amino acids by means of the determination of the temporal course of cumulative 15N excretion in urine and the assessment of the tracer kinetic data in a compartment model. These recommendations are to make it possible to carry out purposefully such experiments under comparable conditions. The advantages of this method are: the non-invasive character of the method; the possibility of repeating the experiment with the same animal; the adaptability to other methods of investigation (e.g. measuring energy metabolism); the relatively low expenditure of labour and requirement of test animals; the relatively good reproducibility of the method. Thus this method is a good supplement to the flooding and permanent infusion methods and should be used wherever the determination of parameters of the protein metabolism of the total body is sufficient.
authors.affiliation: Akademie der Landwirtschaftswissenschaften der DDR, Forschungszentrum für Tierproduktion Dummerstorf-Rostock.
authors.forename: K
authors.initials: K
authors.lastname: Krawielitzki
authors.forename: R
authors.initials: R
authors.lastname: Schadereit
authors.forename: J
authors.initials: J
authors.lastname: Wünsche
mesh_terms: D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D005260:Female; D008297:Male; D009587:Nitrogen Isotopes; D014176:Protein Biosynthesis; D051381:Rats / Q000378:metabolism*; D013552:Swine / Q000378:metabolism*
chemical_list: D009587:Nitrogen Isotopes
vernacular_title: Methodische Empfehlungen zur Bestimmung von Gesamtkörper-Proteinsyntheseraten im Tracerversuch.