title: [The effect of different levels of soybean extract meal on the apparent digestibility of crude nutrients and amino acids in colostomized laying hens].
abstract: Four colostomized laying hens per group were given a ration of barley and soya bean oil meal (SBM) with 12.5, 25.0 and 37.5% SBM resp. The crude protein intakes were 14.0, 17.7 and 21.4 g per animal and day. The lysine intake raised from 681 mg (group 1) to 1275 mg (group 3) per animal and day. The digestibility of dry matter and of the N-free extracts of the ration decreased with the rising SBM portion in the ration. The digestibility of crude protein remained constant. The investigated amino acids (Lys, His, Arg, Cys, Met) were higher digested in the 37.5% SBM ration than in the 12.5% SBM ration. The following digestibility values for SBM were found by means of the difference method: Dry matter 52.5%, crude protein 83.1%, crude fat 51.7%, crude fibre 5.5%, N-free extracts 50.6%. The level of the SBM did not influence the digestibility of the crude nutrients. The apparent digestibility of lysine from SBM depended on the level of intake and was found to be 82.3, 83.4 and 89.0%, resp. There were no differences in the digestibility of other amino acids.
authors.affiliation: Sektion Tierproduktion und Veterinärmedizin, Karl-Marx-Universität Leipzig.
authors.forename: K
authors.initials: K
authors.lastname: Gruhn
authors.forename: R
authors.initials: R
authors.lastname: Zander
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000821:Animal Feed; D000818:Animals; D001835:Body Weight; D002645:Chickens / Q000378:metabolism*; D004044:Dietary Proteins / Q000378:metabolism*; D004063:Digestion; D005243:Feces; D005260:Female; D001467:Hordeum; D010936:Plant Extracts / Q000378:metabolism; D013025:Glycine max
chemical_list: D000596:Amino Acids; D004044:Dietary Proteins; D010936:Plant Extracts
vernacular_title: Untersuchungen zum Einfluss gestaffelter Gaben an Sojaextraktionsschrot auf die scheinbare Verdaulichkeit der Rohnährstoffe und Aminosäuren bei kolostomierten Legehennen.