title: [Dynamics of amino acid and protein metabolism of laying hens after the administration of 15N-labeled wheat protein. 1.Problems, research program and 15N-labeling of urine].
abstract: In a 6-day preliminary period with a pelleted ration 12 colostomized laying hybrids received 15N labelled wheat protein over 4 days. The labelling of the wheat was 14.37 atom-% 15N excess (15N'). During the 4-day application of 15N wheat protein each hen consumed 12.08 g nitrogen, 3.52 g lysine, 2.12 g histidine, 4.41 g arginine, of which were 540 mg 15N', 18.1 mg lysine 15N', 21.5 mg histidine 15N' and 47.9 mg arginine 15N'. Heavy nitrogen was determined in urine and its uric acid-N in the daily urine samples of the individual animals. The average daily urine N excretion was 54% of the total nitrogen consumed with the ration. The labelling of the urine N reached a plateau on the fourth day of the experiment with 3.2 atom-% 15N'. On an average of the total experiment the quota of heavy nitrogen of the uric acid in the total 15N' of the urine was 83.4% and that of uric acid nitrogen in the total urine nitrogen 80.8%.
authors.affiliation: Sektion Tierproduktion und Veterinärmedizin der Karl-Marx-Universität Leipzig.
authors.forename: A
authors.initials: A
authors.lastname: Hennig
authors.forename: K
authors.initials: K
authors.lastname: Gruhn
authors.forename: E
authors.initials: E
authors.lastname: Kirchner
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000821:Animal Feed; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D004044:Dietary Proteins / Q000378:metabolism*; D005260:Female; D009584:Nitrogen / Q000652:urine*; D009587:Nitrogen Isotopes; D014908:Triticum; D014527:Uric Acid / Q000652:urine
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D009587:Nitrogen Isotopes; D014527:Uric Acid; D009584:Nitrogen
vernacular_title: Dynamik des Aminosäuren- und Proteinstoffwechsels der Legehennen nach Applikation von 15N-markiertem Weizenprotein. 1. Mitteilung. Problemstellung, Versuchsprogramm und 15N-Markierung des Harnes.