Interactions of various supplies of isoleucine, valine, leucine and tryptophan on the performance of laying hens - Research portal of Justus Liebig University Giessen:

Journal article

Interactions of various supplies of isoleucine, valine, leucine and tryptophan on the performance of laying hens

Authors list: Peganova, S; Eder, K

Publication year: 2003

Pages: 100-105

Journal: Poultry Science

Volume number: 82

Issue number: 1

ISSN: 0032-5791

DOI Link: https://doi.org/10.1093/ps/82.1.100

Publisher: Elsevier

Abstract:
The present study was undertaken to investigate the interactions among the supplies of isoleucine, leucine, valine, and tryptophan in laying hens. A three-factor trial was conducted with laying hens in which the dietary concentrations of isoleucine (5.7, 8.0, and 11.5 g/kg), valine and leucine (6.3 and 7.2 g/kg and 10.1 and 11.5 g/kg, respectively), and tryptophan (1.5 and 2.4 g/kg) were varied. At the lowest concentration of valine + leucine, an increase in dietary isoleucine concentration led to a dose-dependent reduction in feed consumption, daily egg mass, and body weight gain and an increase of the isoleucine concentration in plasma. At a high dietary concentration of valine + leucine, excess dietary isoleucine concentration caused only a weak depression of performance parameters; the isoleucine concentration in plasma was independent of the dietary isoleucine concentration. Increasing the dietary tryptophan concentration did not influence the effect of an excessive dietary isoleucine. concentration on performance parameters. Increasing the tryptophan concentration from 1.5 to 2.4 g/kg diet did, however, lead to a significant increase in. feed consumption, irrespective of the supply of isoleucine, valine, and leucine. In conclusion, our study demonstrates that the supply of valine + leucine influenced the effects of excess dietary isoleucine in laying hens, whereas the supply with tryptophan did not.

Authors/Editors

- Uni.-Prof. Dr. Klaus Josef Eder

Citation Styles

Harvard Citation style: Peganova, S. and Eder, K. (2003) Interactions of various supplies of isoleucine, valine, leucine and tryptophan on the performance of laying hens, Poultry Science, 82(1), pp. 100-105. https://doi.org/10.1093/ps/82.1.100

APA Citation style: Peganova, S., & Eder, K. (2003). Interactions of various supplies of isoleucine, valine, leucine and tryptophan on the performance of laying hens. Poultry Science. 82(1), 100-105. https://doi.org/10.1093/ps/82.1.100