Methodische Untersuchungen zum Eiweißumsatz und zur Bioenergetik des Eiweißumsatzes bei Wachsenden Tieren

In connection with the measuring of parameters of the protein metabolism in parallel experiments, the energy metabolism of 6 chickens (origin Tetra B) in the live weight range between approximately 100 and 1,800 g was determined under conditions of restricted energy supply. 3 animals each received a feed mixture containing 20% (animal group 1) and 38% (animal group 2) crude protein. The amount of feed was daily increased by 1.5 g DM. The digestibility of energy and nitrogen was independent of the age. 66.3 +/- 3.3% and 64.0 +/- 5.0% resp. of the metabolisable energy were utilised for protein and fat retention. The energy maintenance requirement, determined at a live weight of 2,000 g, was independent of protein supply and averaged in the two animal groups 434 +/- 40 kJ metabolisable energy/kg live weight 0.75 . d. The result of multiple regression was, for the growth period investigated, an energy maintenance requirement of 403 +/- 32 kJ metabolisable energy/kg live weight 0.75 . d. 1.77 and 1.38 J metabolisable energy resp. were required for 1 J protein or fat retention. The energy requirement for protein retention was independent of the degree of protein supply. The results from the measuring of energy metabolism are discussed in connection with the kinetic parameters of protein metabolism ascertained in parallel experiments.

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Ermittlung von N-Stoffwechselparametern im N-Steigerungsversuch an der Ratte unter Verwendung von¹⁵N-Tracern

Pahle

Köhler

Gebhardt

1986

Archiv für Tierernaehrung

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3 groups of 8 Wistar rats each of a live weight of ca. 215 g received graded N supplements. A number of N metabolism parameters were ascertained and discussed. Among other things, the protein synthesis and degradation quotas were ascertained by means of the 15N tracer technique. For the assessment a 3-pool model was used, the content of which was in so far extended as growth and metabolic faecal nitrogen are concretely taken into consideration. A quasi-continuous method of supplementing the tracer was chosen; it was discontinued in approximately the middle of the experiment. Thus the labelling and abatement phases in urine could at the same time be included in the calculation. The protein synthesis quota increases with N intake. It can be concluded from the course of the graph that it gravitates towards a saturation value.

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Methodische Untersuchungen zum Eiweißumsatz und zur Bioenergetik des Eiweißumsatzes bei Wachsenden Tieren

Cited by 7 publications

References 18 publications

¹⁵N-markiertes Hefeproteinhydrolysat als Tracer für Stoffwechseluntersuchungen

¹⁵N-markiertes Hefeproteinhydrolysat als Tracer für Stoffwechseluntersuchungen

Methodische Untersuchungen zum Eiweißumsatz und zur Bioenergetik des Eiweißansatzes bei wachsenden Tieren

Ermittlung von N-Stoffwechselparametern im N-Steigerungsversuch an der Ratte unter Verwendung von¹⁵N-Tracern

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Methodische Untersuchungen zum Eiweißumsatz und zur Bioenergetik des Eiweißumsatzes bei Wachsenden Tieren

Cited by 7 publications

References 18 publications

15N-markiertes Hefeproteinhydrolysat als Tracer für Stoffwechseluntersuchungen

15N-markiertes Hefeproteinhydrolysat als Tracer für Stoffwechseluntersuchungen

Methodische Untersuchungen zum Eiweißumsatz und zur Bioenergetik des Eiweißansatzes bei wachsenden Tieren

Ermittlung von N-Stoffwechselparametern im N-Steigerungsversuch an der Ratte unter Verwendung von15N-Tracern

Contact Info

Product

Resources

About

¹⁵N-markiertes Hefeproteinhydrolysat als Tracer für Stoffwechseluntersuchungen

¹⁵N-markiertes Hefeproteinhydrolysat als Tracer für Stoffwechseluntersuchungen

Ermittlung von N-Stoffwechselparametern im N-Steigerungsversuch an der Ratte unter Verwendung von¹⁵N-Tracern