Untersuchungen zur leerkörpermassezunahme, zum protein‐, fett‐ und energieansatz sowie zur verwertung der umsetzbaren energie für den energieansatz bei schwarzbunten bullen

Abstract

The protein, fat and energy deposition determined in 6 series of individual feeding experiments with different energy supply on slaughter steps (altogether 458 animals) and whole body analysis were generalized in this publication on nonlinear regression analyses. The protein deposition per kg empty body weight gain is influenced by empty body weight, it takes off with increase of the empty body weight. At low empty body weight (100-200 kg) the protein deposition per kg empty body weight gain is small increased with increasing of empty body weight gain, at high empty body weight it is reduced continuously. The fat deposition per kg empty body weight gain increases progressively with the empty body weight and with the empty body weight gain respectively. The energy deposition per kg empty body weight gain increases with increase of empty body weight and of empty body weight gain. It showed the same development like the fat deposition. The protein, fat and energy deposition per kg live weight gain are calculated and tabulated in dependence on the live weight and the live weight gain.

Efficiency of metabolizable and net energy in growing bulls fed diets with maize silage

“…Lack of significant differences in daily BWG between bulls fed according to the metabolizable energy (DLG, 1997) (Gabel and Papstein, 1995b) obtained in both groups was similar to the value that can be obtained determining the requirement for ME according to DLG (1997) standards, accepting the average BW 0.75 as 78.8 kg and daily BWG 1200 g/day in both groups. The INRA ( 1988) system assumes a maintenance requirement for bulls of dairy breeds 502 kJ ME/ kg BW 0.75 and beef breads 577 kJ ME/kg BW 0.75 and on such assumptions, ME efficiency for production is about 4 percentage units higher in both groups.…”

“…The gradual increase of GE metabolizability of rations (q) and AFL and APL values as the BWG increased in consecutive subgroups of both groups, accompanied by a parallel decrease of the kmf coefficient value, is consistent with the assumption of both bull fattening systems applied in the experiment (INRA, 1978;Geay et al, 1987;Gabel and Papstein, 1995b).…”

Wachstum, Schlachtleistung und Schlachtkörperqualität von Weidemastkälbern aus der Mutterkuhhaltung mit Fleischrindrassen

“…Die Erzeugung von Weidekälbern kann für die Mutterkuhhaltung ein günstiges Verfahren darstellen, wenn diese Kälber mit hohen Absetzgewichten gut vermarktet werden. Dies ist nur bei Direktvermarktung, im Rahmen von Markenprogrammen oder beim Verkauf an spezielle Nahrungsmittelhersteller möglich, da es keine Handelsklassen für diese jungen, sehr naturnah erzeugten Schlachtrinder gibt (BOEHNKE et al, 1994;BREHME et al, 1997;WESSELINK, 1996;WEIHER und ZUPP, 1997;ZUPP und MARTIN, 1997, 1998 (PAPSTEIN, 1994;ZUPP und MARTIN, 1998;ENDER, 1998 (GROSSE und PAPSTEIN, 1992-ENDER und AUGUSTINI, 1998ZUPP und MARTIN, 1998;ENDER, 1998 GROSSE et al, 1991;SCHWARZ et al, 1993;REIMANN et al, 1994;GABEL et al, 1995;Anonym, 1995 …”