FN Archimer Export Format
PT J
TI An investigation of links between metabolic rate and feed efficiency in European sea bass Dicentrarchus labrax
BT 
AF Rodde, Charles
   de Verdal, Hugues
   Vandeputte, Marc
   Allal, Francois
   Nati, Julie
   Besson, Mathieu
   Blasco, Felipe R
   Benzie, John A H
   McKenzie, David
AS 1:1,2,3,7;2:1,2;3:5,7;4:4;5:7;6:1,7;7:6;8:3;9:7;
FF 1:;2:;3:;4:PDG-RBE-MARBEC-LAAAS;5:;6:;7:;8:;9:;
C1 CIRAD, UMR ISEM, 34398 Montpellier, France
   ISEM, Université de Montpellier, CNRS, EPHE, IRD, 34095 Montpellier, France
   Worldfish, Jalan Batu Maung, Bayan Lepas, 11960, Penang, Malaysia
   MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34250 Palavas-les-Flots, France
   Université Paris-Saclay, INRAE, AgroParisTech, GABI, 78350 Jouy-en-Josas, France
   Laboratório de Zoofisiologia e Bioquímica Comparativa, Departamento de Ciências Fisiológicas, Universidade Federal de São Carlos, São Paulo, 13565-905, Brasil
   MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, 34250 Palavas-les-Flots, France
C2 CIRAD, FRANCE
   UNIV MONTPELLIER, FRANCE
   WORLDFISH, MALAYSIA
   IFREMER, FRANCE
   INRAE, FRANCE
   UNIV FED SAO PAULO, BRAZIL
   CNRS, FRANCE
SI PALAVAS
SE PDG-RBE-MARBEC-LAAAS
UM MARBEC
IN WOS Ifremer UMR
   WOS Cotutelle UMR
   copubli-france
   copubli-p187
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 3.338
TC 4
UR https://archimer.ifremer.fr/doc/00694/80585/87984.pdf
LA English
DT Article
DE ;aquaculture;genetic populations;individual rearing;oxygen consumption;respirometry
AB Feed efficiency (FE) is the amount of body weight gain for a given feed intake. Improving FE through selective breeding is key for sustainable finfish aquaculture but its evaluation at individual level is technically challenging. We therefore investigated whether individual routine metabolic rate (RMR) was a predictor of individual FE in the European sea bass Dicentrarchus labrax, a major species in European mariculture. The European sea bass has three genetically distinct populations across its geographical range, namely Atlantic Ocean (AT), West Mediterranean (WM) and East Mediterranean (EM). We compared FE and RMR of fish from these three populations at 18°C or 24°C. We held 200 fish (62 AT, 66 WM and 72 EM) in individual aquaria and fed them from ad libitum down to fasting. Feed efficiency was assessed for an ad libitum feeding rate and for a fixed restricted ration (1% of metabolic body weight.day -1, with metabolic body weight = body weight 0.8). After being refed 12 weeks in a common tank, individual RMR was measured over 36h by intermittent flow respirometry. There was a significant effect of temperature whereby fish at 18°C had greater mean FE (P < 0.05) and lower RMR (P < 0.001). There was also a significant effect of population, where AT fish had lower FE (P < 0.05) and greater RMR (P < 0.001) than WM and EM, at both temperatures. Despite these differences in temperature and population means, individual FE and RMR were not significantly correlated (P > 0.05). Therefore, although the results provide evidence of an association between metabolic rate and FE, RMR was not a predictor of individual FE, for reasons that require further investigation. 
PY 2021
PD JUL
SO Journal Of Animal Science
SN 0021-8812
PU Oxford University Press (OUP)
VL 99
IS 6
UT 000670966900032
DI 10.1093/jas/skab152
ID 80585
ER

EF