Abstract Water



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How our data is generated

Australian Seafood Industries (ASI) supplies selectively bred broodstock to commercial hatcheries, who then produce spat for sale to commercial farms in South Australia, Tasmania and New South Wales.

Over the last three breeding seasons, ASI has primarily focused on fast-tracking POMS resistance in our genetically-bred oysters, while still maintaining the performance and survival gains that have been made. Estimated breeding values (EBV) are the predicted genetic gains for a measured trait in a family line. This is calculated from trial and pedigree data. Trials contain Replicate groups of oysters from each family are deployed under commercial conditions from ~2-3mm size, at different sites in both Tasmania and South Australia.

Data was collected on live counts, size (survival, length, width and depth), whole weight, meat weight and shell weight and collected at intervals throughout grow-out.

The data was input into the CSIRO database where data analysis was conducted by a specialist team of quantitative geneticists, mathematicians, and computer programmers. The combination of heritability and variability was used to predict the amount of change in a trait that a family may be expected to yield. This is shown through EBV of the family for the trait.  


EBV’s have been calculated for five performance traits (length index, width index, depth index, weight, and condition) and two resilience traits (POMS survival, and South Australian survival). ASI recommends choosing broodstock based on EBV performance rather than year class.

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Want to know a little more about our breeding program? You might find your questions answered in our FAQ's page.


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