title: [The contribution of betaine and glutamic acid to nitrogen digestion and balance during feeding of vinasse to growing pigs].
abstract: A conventional balance trial was conducted with growing pigs to study to what extent betaine and glutamic acid contained in vinasse (condensed molasses solubles) contribute to N digestion and balance. Five pigs each were given either a basal diet (95% ground barley + 5% cellulose) or a mixed ration of 77% basal diet plus 23% vinasse, based on dry matter (DM). The vinasse contained, per kg DM, 29.6 g N, 27.7 g NPN, 22.5 g betaine, 32.9 g "free" total L-glutamic acid, of which 96% was pyrrolidone carboxylic acid plus glutamine. For these N fractions of the vinasse, mean apparent digestibilities were 44.7, 63.8, 99.8 and 97.6%, respectively. Accordingly, betaine and total glutamic acid contributed 20 and 23%, respectively, of the apparently digestible total N of the vinasse. The pigs given vinasse excreted, per day, 257 mg more betaine and 364 mg more trimethylamine-N-oxide with their urine than the group given the basal diet. The contribution of betaine N of the vinasse to the N balance of the pigs on the mixed ration amounted to 11%.
mesh_terms: D000821:Animal Feed; D000818:Animals; D001622:Betaine / Q000378:metabolism; D004063:Digestion; D005971:Glutamates / Q000378:metabolism; D008297:Male; D008965:Molasses; D009584:Nitrogen / Q000378:metabolism*; D013552:Swine / Q000378:metabolism*
chemical_list: D005971:Glutamates; D001622:Betaine; D009584:Nitrogen
vernacular_title: Betain- und Glutaminsäureanteile an der Stickstoffverdauung und -bilanz bei Vinassefütterung an wachsende Schweine.