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| Vandeputte, Marc; Fraslin, Clemence; Haffray, Pierrick; Bestin, Anastasia; Allal, Francois; Kocour, Martin; Prchal, Martin; Dupont-nivet, Mathilde. |
| Fillet yield (i.e. the proportion of edible muscle in a fish) is a key economic trait for species sold as fillets. Its genetic improvement is complicated by several of its characteristics 1) it is a ratio trait, 2) its numerator (fillet weight) and denominator (body weight) are strongly correlated (correlations in the range 0.89-0.99), 3) it offers little phenotypic variation and 4) it cannot be measured on alive breeding candidates. In a former study, we showed that it could be improved by selection, especially with three selection indices, fillet yield, residual fillet weight and a ratio-specific linear index. However, it is well known that the heritability of ratio traits does not permit a reliable prediction of genetic gains. As predictability of... |
| Tipo: Text |
Palavras-chave: Aquaculture; Genetics; Heritability; Selection; Linear index; Residual fillet weight; Selection response; Simulation; Processing yields. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00612/72378/71390.pdf |
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| Fraslin, Clemence; Dupont-nivet, Mathilde; Haffray, Pierrick; Bestin, Anastasia; Vandeputte, Marc. |
| Fillet yield (i.e. the proportion of edible flesh from a given amount of fish) is a trait of high economic interest for species sold as fillets. Improving it by selective breeding is not an easy task, as it is a ratio trait, which causes mathematical difficulties. It is moreover a specific ratio where numerator (fillet weight) and denominator (body weight) are very strongly correlated (genetic and phenotypic correlations in the range 0.89–0.99). This led some authors to conclude that they have the same genetic and phenotypic basis, precluding selection for improved fillet yield. In this study, we propose to study fillet yield as a component of two traits, fillet weight and waste weight (waste weight = body weight-fillet weight, so the sum of head, bones,... |
| Tipo: Text |
Palavras-chave: Aquaculture; Genetics; Heritability; Selection; Processing yields. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00415/52599/53430.pdf |
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