Contribution of dietary arginine to nitrogen utilisation and excretion in juvenile sea bass (Dicentrarchus labrax) fed diets differing in protein source

Type Article
Date 2007-05
Language English
Author(s) Tulli F1, Vachot Christianne2, 3, Tibaldi E1, Fournier Vincent2, 3, Kaushik Sadasivam2, 3
Affiliation(s) 1 : Dipartimento Sci Anim, I-33010 Pagnacco, UD, Italy.
2 : IFREMER, INRA, Lab Nutr Poissons, Unite Mixte,Stn Hydrobiol, F-64310 St Pee Sur Nivelle, France.
Source Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology (1095-6433) (Elsevier), 2007-05 , Vol. 147 , N. 1 , P. 179-188
DOI 10.1016/j.cbpa.2006.12.036
WOS© Times Cited 30
Keyword(s) Dicentrarchus labrax, Sea bass, Excretion, Arginase, Urea, Arginine
Abstract The role of dietary arginine in affecting nitrogen utilisation and excretion was studied in juvenile European sea bass (Dicentrarchus labrax) fed for 72 days with diets differing in protein sources (plant protein-based (PM) and fish-meal-based (FM)). Fish growth performance and nitrogen utilisation revealed that dietary Arg surplus was beneficial only in PM diets. Dietary Arg level significantly affected postprandial plasma urea concentrations. Hepatic arginase activity increased (P < 0.05) in response to dietary Arg surplus in fish fed plant protein diets; conversely ornithine transcarbamylase activity was very low and inversely related to arginine intake. No hepatic carbamoyl phosphate synthetase III activity was detected. Dietary arginine levels did not affect glutamate dehydrogenase activity. A strong linear relationship was found between liver arginase activity and daily urea-N excretion. Dietary Arg excess reduced the proportion of total ammonia nitrogen excreted and increased the contribution of urea-N over the total N excretion irrespective of dietary, protein source. Plasma and excretion data combined with enzyme activities suggest that dietary Arg degradation via hepatic arginase is a major pathway for ureagenesis and that ornithine-urea cycle is not completely functional in juvenile sea bass liver. (c) 2007 Elsevier Inc. All rights reserved.
Full Text
File Pages Size Access
publication-6317.pdf 10 108 KB Open access
Top of the page

How to cite 

Tulli F, Vachot Christianne, Tibaldi E, Fournier Vincent, Kaushik Sadasivam (2007). Contribution of dietary arginine to nitrogen utilisation and excretion in juvenile sea bass (Dicentrarchus labrax) fed diets differing in protein source. Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 147(1), 179-188. Publisher's official version : https://doi.org/10.1016/j.cbpa.2006.12.036 , Open Access version : https://archimer.ifremer.fr/doc/00000/6317/