title: [Influence of native crude fibers on the true digestibility of nitrogen and the amino acids].
abstract: In several test series with rats, the influence of native crude fibres (straw meal and pea hulls) on the amount of metabolic fecal nitrogen (MFN) was tested. It could be ascertained that native crude fibres increase MFN. The influence of the increased MFN on the true digestibility of nitrogen and the amino acids was investigated in test series with casein diets. The casein diets were supplemented with native crude fibres. Generalising, we can state that native crude fibres--due to their structure (lignin)--fix amino acids and thus withhold them from absorption. They do not, however, increase the MFN by mechanical action (increase of the scraping off of intestinal epithelium).
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D002482:Cellulose; D004043:Dietary Fiber; D004063:Digestion; D005243:Feces / Q000032:analysis; D009584:Nitrogen / Q000378:metabolism*; D010944:Plants; D051381:Rats
chemical_list: D000596:Amino Acids; D004043:Dietary Fiber; D002482:Cellulose; D009584:Nitrogen
vernacular_title: Zum Einfluss nativer Rohfaser auf die wahre Verdaulichkeit des Stickstoffs und der Aminosäuren.