FN Archimer Export Format
PT J
TI In search for indirect criteria to improve feed utilization efficiency in sea bass (Dicentrarchus labrax) Part II: Heritability of weight loss during feed deprivation and weight gain during re-feeding periods
BT 
AF GRIMA, Laure
   CHATAIN, Beatrice
   RUELLE, Francois
   VERGNET, Alain
   LAUNAY, Amandine
   MAMBRINI, Muriel
   VANDEPUTTE, Marc
AS 1:1,2;2:2;3:2;4:2;5:1;6:1;7:1,2;
FF 1:;2:PDG-DOP-DCM-BOME-LALR;3:PDG-DOP-DCM-BOME-LALR;4:PDG-DOP-DCM-BOME-LALR;5:;6:;7:;
C1 INRA, UMR Genet Anim & Biol Integrat 1313, F-78350 Jouy En Josas, France.
   IFREMER, Stn Aquaculture Expt, F-34250 Palavas Les Flots, France.
C2 INRA, FRANCE
   IFREMER, FRANCE
SI PALAVAS
SE PDG-DOP-DCM-BOME-LALR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
IF 2.044
TC 19
UR https://archimer.ifremer.fr/doc/00004/11529/8213.pdf
LA English
DT Article
DE ;European sea bass;Dicentrarchus labrax;Feed efficiency;Heritability;Genetic parameters;Residual feed intake;Feed deprivation;Compensatory growth;Selective breeding
AB Selective breeding to improve residual feed intake (RFI) in sea bass (Dicentrarchus labrax) is a major goal that would optimize economic gain while minimizing the environmental impact of production. Due to the difficulty in accurately measuring individual feed intake, no selective breeding program has yet been started. In a previous study, we identified a criterion phenotypically related to RFI variations: the loss of weight during feed deprivation, FD. Moreover, an additional composite criterion (CC) integrating both FD and weight gain during subsequent re-feeding (RF) was closely related to RFI, even though the relationship was only close to significance (P=0.06). The aim of the present study was to estimate the heritability of these two traits, in order to complete the analysis of their pertinence as indirect criteria for use in a selective breeding program to improve RFI. We set up a full factorial mating design combining 41 sires and eight dams to produce mixed families offspring, which were all raised in the same tank. At 50g. 1300 individuals were individually tagged and a fin clip was sampled for DNA extraction and parentage reassignment using five to six microsatellite loci, which showed they originated from 261 families. The evolution of individual body weight was recorded during a growth period of three weeks, followed by successive periods of three weeks feed deprivation and three weeks ad libitum re-feeding, repeated twice. Phenotypic and genetic correlations between the two feed deprivation periods or the two re-feeding periods were moderate (r = 0.45-0.51, and 0.71-0.73 respectively for phenotypic and genetic correlations) indicating that FD and RF are relatively repeatable. FD, RF and CC heritabilities were of the same magnitude (0.23 +/- 0.04, 0.19 +/- 0.04 and 0.22 +/- 0.04, respectively), and sufficient to consider the use of such criteria in a future breeding program.
PY 2010
PD APR
SO Aquaculture
SN 0044-8486
PU Elsevier Science Bv
VL 302
IS 3-4
UT 000277851300005
BP 169
EP 174
DI 10.1016/j.aquaculture.2010.02.016
ID 11529
ER

EF