FN Archimer Export Format
PT J
TI Contribution of dietary arginine to nitrogen utilisation and excretion in juvenile sea bass (Dicentrarchus labrax) fed diets differing in protein source
BT 
AF TULLI, F
   VACHOT, Christianne
   TIBALDI, E
   FOURNIER, vincent
   KAUSHIK, Sadasivam
AS 1:1;2:2,3;3:1;4:2,3;5:2,3;
FF 1:;2:;3:;4:;5:;
C1 Dipartimento Sci Anim, I-33010 Pagnacco, UD, Italy.
   IFREMER, INRA, Lab Nutr Poissons, Unite Mixte,Stn Hydrobiol, F-64310 St Pee Sur Nivelle, France.
C2 UNIV UDINE, ITALY
   IFREMER, FRANCE
   INRA, FRANCE
SI ST PEE SUR NIVELLE
   BREST
SE PDG-DOP-DCB-PFOM-ARN
   PDG-DRV-RA-URN
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-europe
IF 1.863
TC 34
UR https://archimer.ifremer.fr/doc/2007/publication-6317.pdf
LA English
DT Article
DE ;Dicentrarchus labrax;Sea bass;Excretion;Arginase;Urea;Arginine
AB 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.
PY 2007
PD MAY
SO Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology
SN 1095-6433
PU Elsevier
VL 147
IS 1
UT 000245995700022
BP 179
EP 188
DI 10.1016/j.cbpa.2006.12.036
ID 6317
ER

EF