Estimation of genetic parameters of feed conversion ratio based on individual phenotypes and genomic data in sea bass
|Author(s)||Besson Mathieu1, Allal Francois1, Chatain Beatrice1, Vergnet Alain1, Clota Frederic2, Ferrari Sebastien1, Vandeputte Marc2|
|Meeting||World Congress on Genetics Applied to Livestock Production Aotea Centre Auckland, New Zealand, 11–16 February 2018|
|Source||Proceedings of the World Congress on Genetics Applied to Livestock Production, vol. Species - Aquaculture 1, p. 426, 2018 (5p.)|
|Keyword(s)||feed efficiency, fish, genomics|
We estimated genetic parameters of feed conversion ratio (FCR) and daily growth coefficient (DGC) using individual phenotypes measured in aquariums under a restricted feeding regime and genomic information on 2,722 SNP markers. The results showed a moderate heritability of both traits (0.26 for FCR and 0.41 for DGC) as well as close to unity negative genetic correlation between them. Thus, FCR of fish in aquariums could be improved by selecting fish for higher DGC. Nevertheless, these results must be taken with caution until we know whether individual FCR measured in aquariums also reflects the FCR of fish reared in groups.