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May 10, 2026Genetics Selection EvolutionOpen Access

Phenotypic and genetic analysis of energy partitioning and feed efficiency in Atlantic salmon

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Authors

ASAnna K. SonessonNofimaGDGareth F. DiffordNofimaANAshie NorrisMowi (Norway)

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Implication

Randomized trial evaluates genetic traits affecting feed efficiency in Atlantic salmon, suggesting new breeding strategies.

Key Points

  • This study aims to analyze energy partitioning traits and estimate genetic relationships affecting feed efficiency in Atlantic salmon.
  • Performed phenotypic analysis of energy partitioning traits among Atlantic salmon families.
  • Estimated heritability for traits such as feed intake, weight gain, and feed efficiency ratio.
  • Determined optimal breeding strategies to improve feed efficiency.
  • Moderate heritability estimates were found for feed intake (0.35), weight gain (0.42), and feed efficiency ratio (0.19).
  • A genetic correlation of 0.68 was observed between feed efficiency and growth, and -0.64 with energy density.
  • Selection against body energy can improve feed efficiency ratio, allowing gains without individual intake records.

Cite This Study

Sonesson et al. (2026) studied this question.

synapsesocial.com/papers/6a00217ac8f74e3340f9c6a0https://doi.org/10.1186/s12711-026-01045-w
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