title: [Absorption of protein-linked N and synthetic lysine in the small intestine of pigs].
abstract: The absorption and absorbility of the protein-linked N was investigated with 3 pigs in the live weight range between 15 and 27 kg, which had been provided with simple cannulae at the end of the ileum and with portal vene catheters. After receiving a semi-synthetic ration with 15N-labelled curds as sole protein source, supplemented with 0,3% 35S-DL-methionine, the course of absorption could be observed both for 15N and 35S with the help of the chyme samples. Considering the endogenous 15N-quota in the chyme in the small intestines, it was possible to acquire data concerning the apparent and true absorption resp. absorbility of the feed-N. It could be ascertained that the supplemented synthetic amino acid is better absorbed than the protein-linked amino acids. So the absorption of 35S amounted to 91,2% of the intake whereas only 84,2% of the labelled N was observed.
mesh_terms: D000818:Animals; D004044:Dietary Proteins / Q000378:metabolism*; D007408:Intestinal Absorption; D007421:Intestine, Small / Q000502:physiology*; D008297:Male; D008715:Methionine / Q000378:metabolism*; D013329:Structure-Activity Relationship; D013552:Swine / Q000378:metabolism*
chemical_list: D004044:Dietary Proteins; D008715:Methionine
vernacular_title: Untersuchunger zur Dünndarmresorption von proteingebundenem N und synthetischem Methionin bei Schweinen.