Journal
JOURNAL OF APPLIED AQUACULTURE
Volume 34, Issue 4, Pages 1021-1035Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10454438.2021.1916671
Keywords
Sterile fish; sea-cage culture; commercial production; growth metrics; production evaluation
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This study compared the performance of diploid and triploid Atlantic salmon from four Norwegian aquaculture companies under commercial conditions, revealing that triploid salmon exhibited reduced survival, higher incidence of emaciated fish, and scored lower quality ratings during primary processing. Further research is needed to improve the welfare and performance of triploid salmon in commercial aquaculture operations.
Avoiding genetic interactions between wild and farmed Atlantic salmon is regarded as one of the major requirements for a sustainable salmon aquaculture industry. For this reason, farming functional sterile triploids has been suggested as a possible solution. However, knowledge about how triploids cope under commercial conditions is lacking. In the present study, we compared the performance of diploid and triploid Atlantic salmon among four Norwegian aquaculture companies. Diploid and triploid groups of the same genetic line were farmed in western, mid, and northern Norway under commercial conditions from seawater transfer until slaughter.Overall, triploid salmon exhibited reduced survival, higher incidence of emaciated fish, and scored, on average, a lower quality rating during primary processing. The results highlight the need for further research on how to improve the welfare and performance of triploid salmon in commercial aquaculture operations.
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