Dataset Information

Genomic predictions for fillet yield and firmness in rainbow trout using reduced-density SNP panels.

ABSTRACT:

Background

One of the most important goals for the rainbow trout aquaculture industry is to improve fillet yield and fillet quality. Previously, we showed that a 50?K transcribed-SNP chip can be used to detect quantitative trait loci (QTL) associated with fillet yield and fillet firmness. In this study, data from 1568 fish genotyped for the 50?K transcribed-SNP chip and ~?774 fish phenotyped for fillet yield and fillet firmness were used in a single-step genomic BLUP (ssGBLUP) model to compute the genomic estimated breeding values (GEBV). In addition, pedigree-based best linear unbiased prediction (PBLUP) was used to calculate traditional, family-based estimated breeding values (EBV).

Results

The genomic predictions outperformed the traditional EBV by 35% for fillet yield and 42% for fillet firmness. The predictive ability for fillet yield and fillet firmness was 0.19-0.20 with PBLUP, and 0.27 with ssGBLUP. Additionally, reducing SNP panel densities indicated that using 500-800 SNPs in genomic predictions still provides predictive abilities higher than PBLUP.

Conclusion

These results suggest that genomic evaluation is a feasible strategy to identify and select fish with superior genetic merit within rainbow trout families, even with low-density SNP panels.

SUBMITTER: Al-Tobasei R

PROVIDER: S-EPMC7847601 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature

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Publications

Genomic predictions for fillet yield and firmness in rainbow trout using reduced-density SNP panels.

Al-Tobasei Rafet R Ali Ali A Garcia Andre L S ALS Lourenco Daniela D Leeds Tim T Salem Mohamed M

BMC genomics 20210130 1

<h4>Background</h4>One of the most important goals for the rainbow trout aquaculture industry is to improve fillet yield and fillet quality. Previously, we showed that a 50 K transcribed-SNP chip can be used to detect quantitative trait loci (QTL) associated with fillet yield and fillet firmness. In this study, data from 1568 fish genotyped for the 50 K transcribed-SNP chip and ~ 774 fish phenotyped for fillet yield and fillet firmness were used in a single-step genomic BLUP (ssGBLUP) model to c ...[more]

PMID: 33516179

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Dataset Information

Genomic predictions for fillet yield and firmness in rainbow trout using reduced-density SNP panels.

Background

Results

Conclusion

Publications

Genomic predictions for fillet yield and firmness in rainbow trout using reduced-density SNP panels.

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