FN Archimer Export Format
PT J
TI Genetic variation for carcass quality traits in cultured sea bass (Dicentrarchus labrax)
BT 
AF SAILLANT, Eric
   DUPONT-NIVET, Mathilde
   SABOURAULT, Marie
   HAFFRAY, Pierrick
   LAUREAU, Stanislas
   VIDAL, Marie-Odile
   CHATAIN, Beatrice
AS 1:1,4,5;2:2;3:5;4:3;5:1;6:5;7:5;
FF 1:;2:;3:;4:;5:;6:PDG-DOP-DCM-BOME-LALR;7:PDG-DOP-DCM-BOME-LALR;
C1 Ecloserie Marine Gravelines, F-59820 Gravelines, France.
   INRA, UMR 1313, F-78350 Jouy En Josas, France.
   SYSAAF, Sect Aquacole, Stn SCRIBE, F-35042 Rennes, France.
   Univ So Mississippi, Gulf Coast Res Lab, Dept Coastal Sci, Ocean Springs, MS 39564 USA.
   IFREMER, Lab Rech Pisciculture Marine, F-34250 Palavas Les Flots, France.
C2 ECLOSERIE MARINE GRAVELINES, FRANCE
   INRA, FRANCE
   SYSAAF, FRANCE
   UNIV SO MISSISSIPPI, USA
   IFREMER, FRANCE
SI PALAVAS
SE PDG-DOP-DCM-BOME-LALR
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-int-hors-europe
IF 1.227
TC 27
UR https://archimer.ifremer.fr/doc/2009/publication-6355.pdf
LA English
DT Article
DE ;Dicentrarchus labrax;Communal testing;Microsatellites markers;Carcass quality;Heritability
AB Genetic parameters for carcass quality traits were estimated in 27 families of sea bass (3 dams x 9 sires factorial mating design), raised mixed in the same tanks starting before hatching. O. spring parentage was determined a posteriori using 6 microsatellite loci. Carcass quality traits were recorded at 818 days post fertilization (mean standard length: 32.6 +/- 3.1 cm). Genetic parameters were estimated from the sire half sib variance and covariance components. Heritability of body weight (BW) and carcass processing traits (standardized to body weight) percent head weight (Head%), percent viscera weight (Viscera%) and percent visceral fat weight (VisceFat%) were relatively high ranging from 0.48 +/- 0.15 (Viscera%) to 0.87 +/- 0.23 (Head%); the estimate of heritability for fillet yield (Fillet%) was lower (0.25 +/- 0.10) but was significantly greater than zero. Body weight was positively correlated to Fillet%, Viscera%, and VisceFat%, and negatively correlated to Head%. These results indicate that these carcass processing traits can be modified by directional selection and that selection for greater BW would lead to an increase of Fillet%, Viscera% and VisceFat% and a decrease of Head%. Muscle lipid content (MuscleLipid%) was determined using two indirect methods: measurements with a Torry Fish Fatmeter (R) (TorryLipid) and determination of the percentage of dry matter content (MuscleDry%) via desiccation. Both measures were highly correlated to chemical measurements of MuscleLipid%. Regression analysis indicated a superior predictive value of TorryLipid suggesting that MuscleLipid% may be evaluated via rapid, non lethal measurements with a Torry Fish Fatmeter. Heritability estimates of TorryLipid and MuscleDry% differed significantly from zero (TorryLipid: 0.28 +/- 0.12, MuscleDry%: 0.36 +/- 0.14) indicating that MuscleLipid% could be lowered by directional selection. TorryLipid and MuscleDry% were weakly correlated to body weight and carcass processing traits suggesting that simultaneous improvement of MuscleLipid% and other carcass quality traits may require definition of multi-trait selection indices.
PY 2009
SO Aquatic Living Resources
SN 0990-7440
PU EDP Sciences
VL 22
IS 1
UT 000265079800011
BP 105
EP 112
DI 10.1051/alr/2009010
ID 6355
ER

EF