Comparison of the methods modified hohenheimer futter-werttest (mohft) and cornell system for determination of nxp-content of concentrates | Vergleich der Methoden modifizierter Hohenheimer Futterwerttest (mohft) und Proteinfraktionierung nach dem Cornell system zur bestimmung des NXP-gehaltes von Kraftfuttermitteln
2007
Leberl, P., Hohenheim Univ. (Deutschland). Landesanstalt für landwirtschaftliche Chemie | Gruber, L. | Steingass, H. | Schenkel, H.
For evaluating the protein value of feedstuffs for ruminants the knowledge of their nXP-content is of great importance. On the basis of 85 concentrates, differing wide in their nutrient compo-sition, the adequacy and comparability of two laboratory methods for this parameter has been tested. At the state institute of agricultural chemistry of the Universität Hohenheim the feedstuffs were incubated in the moHFT for 8, 24 and 48 hours, followed by a NH3-destillation. At the HBLFA Raumberg-Gumpenstein with the same concentrates the protein fractionation according to the Cornell system has taken place (Gruber et al., 2005). Both methods showed good consistency in the nXP-contents of many feedstuffs. Whereas for rapidly degradable protein and energy sources in the moHFT in vitro incubation periods of 8+24h seem to be appropriate, incubation periods of 8+48h are superior to feedstuffs with a slower carbohydrate and protein degradation rate. Problems, caused by implausible results in the protein fractionation method according to Cornell system arised in contrast to the moHFT in the feedstuffs soybean meal 50, rapeseed cake, brewers grains and corngluten.
Afficher plus [+] Moins [-]Mots clés AGROVOC
Informations bibliographiques
Cette notice bibliographique a été fournie par University of Ljubljana
Découvrez la collection de ce fournisseur de données dans AGRIS