title: [Dependence of energy maintenance requirements on nutrients in rats. 3. Effect of the protein levels of food on the energy maintenance requirements of growing rats].
abstract: In addition to earlier experiments with growing rats on the protein levels 10, 25 and 40% crude protein in the dry matter of the feed (Hoffmann et al., 1982 a), two groups of nine male Wistar rats each received feed mixtures with 6 or 25% crude protein resp. and energy metabolism on the energy maintenance level in an N equilibrium or with a positive N balance resp. were measured on 6 levels of live weight between 65 and 250 g and additionally also at subsequent fasting day. Energy maintenance requirement on average of the 6 periods amounted to 381 and 377 kJ metabolizable energy/kg W 0.75 X d on a low or middle protein level resp. and thus did not show changes at the decrease of N retention to values of about zero even with regard to different ATP formation capacities of the nutrients.
mesh_terms: D000821:Animal Feed; D000818:Animals; D004041:Dietary Fats / Q000378:metabolism; D004044:Dietary Proteins / Q000378:metabolism*; D004734:Energy Metabolism; D008297:Male; D009584:Nitrogen / Q000378:metabolism / Q000652:urine; D051381:Rats; D011919:Rats, Inbred Strains / Q000378:metabolism*
chemical_list: D004041:Dietary Fats; D004044:Dietary Proteins; D009584:Nitrogen
vernacular_title: Untersuchungen an Ratten zur Nährstoffabhängigkeit des Energieerhaltungsbedarfs. 3. Mitteilung. Einfluss des Proteinniveaus der Nahrung auf den Energieerhaltungsbedarf wachsender Ratten.