FN Archimer Export Format
PT J
TI Quantifying the genetic parameters of feed efficiency in juvenile Nile tilapia Oreochromis niloticus
BT 
AF DE VERDAL, Hugues
   VANDEPUTTE, Marc
   MEKKAWY, Wagdy
   CHATAIN, Beatrice
   BENZIE, John A. H.
AS 1:1,2;2:3,4;3:2,5;4:4;5:2,6;
FF 1:;2:;3:;4:PDG-RBE-MARBEC-LAAAS;5:;
C1 CIRAD, ISEM, UMR116, TA B-116-16,73 Rue Jean Francois Breton, F-34398 Montpellier 5, France.
   Worldfish, Jalan Batu Maung, Bayan Lepas 11960, Penang, Malaysia.
   Univ Paris Saclay, AgroParisTech, INRA, GABI, F-78350 Jouy En Josas, France.
   IFREMER, MARBEC UMR9190, Chemin Maguelone, F-34250 Palavas Les Flots, France.
   Ain Shams Univ, Fac Agr, Anim Prod Dept, Cairo 11241, Egypt.
   Univ Coll Cork, Sch Biol Earth & Environm Sci, Cork, Ireland.
C2 CIRAD, FRANCE
   WORLDFISH, MALAYSIA
   UNIV PARIS SACLAY, FRANCE
   IFREMER, FRANCE
   UNIV CAIRO, EGYPT
   UNIV COLL CORK, IRELAND
SI PALAVAS
SE PDG-RBE-MARBEC-LAAAS
UM MARBEC
IN WOS Ifremer jusqu'en 2018
   DOAJ
   copubli-france
   copubli-p187
   copubli-europe
   copubli-univ-france
   copubli-int-hors-europe
   copubli-sud
IF 2.547
TC 26
UR https://archimer.ifremer.fr/doc/00469/58115/60551.pdf
LA English
DT Article
DE ;Feed conversion ratio;Tilapia;Heritability;Genetic estimations;Correlations
AB Background: Improving feed efficiency in fish is crucial at the economic, social and environmental levels with respect to developing a more sustainable aquaculture. The important contribution of genetic improvement to achieve this goal has been hampered by the lack of accurate basic information on the genetic parameters of feed efficiency in fish. We used video assessment of feed intake on individual fish reared in groups to estimate the genetic parameters of six growth traits, feed intake, feed conversion ratio (FCR) and residual feed intake in 40 pedigreed families of the GIFT strain of Nile tilapia, Oreochromis niloticus. Feed intake and growth were measured on juvenile fish (22.4g mean body weight) during 13 consecutive meals, representing 7days of measurements. We used these data to estimate the FCR response to different selection criteria to assess the potential of genetics as a means of increasing FCR in tilapia. Results: Our results demonstrate genetic control for FCR in tilapia, with a heritability estimate of 0.320.11. Response to selection estimates showed FCR could be efficiently improved by selective breeding. Due to low genetic correlations, selection for growth traits would not improve FCR. However, weight loss at fasting has a high genetic correlation with FCR (0.80 +/- 0.25) and a moderate heritability (0.23), and could be an easy to measure and efficient criterion to improve FCR by selective breeding in tilapia. Conclusion: At this age, FCR is genetically determined in Nile tilapia. A selective breeding program could be possible and could help enabling the development of a more sustainable aquaculture production. 
PY 2018
PD NOV
SO Bmc Genetics
SN 1471-2156
PU Bmc
VL 19
IS 105
UT 000450534000001
DI 10.1186/s12863-018-0691-y
ID 58115
ER

EF