What is wrong with current redclaw crayfish stocking practices?

Known Inefficiencies with Current Stocking Practices

Current stocking practices are not conducive to control of genetics, which leads to inbreeding issues.
Read further to learn the many benefits of ACH’s ‘Batch in, Batch out’ (BiBo) stocking solution.
Measuring craylings length for best stocking practices

ACH Batch in/Batch out (BiBo) Solution

Further Benefits of Using ACH's BiBo Solution

By using ACH craylings and the ‘batch-in, batch-out’ method, you will: 

Summary of ACH Solutions

Current Practices

Traditionally, production in Australia has relied on stocking clay ponds with large crayfish breeders for harvest of  5-15 g juveniles that are stocked in growout ponds and reared 9 months to commercial size (70 g). This presents a number of problems:
  • Lack of control of reproduction.
  • Increase of diseases affecting egg and juvenile survival.
  • High levels of juvenile loss due to cannibalism and predation during the extended rearing time.
  • Variable age of harvested juveniles, where mixed cohorts in the pond may affect commercial harvest distribution spread, female size and biomass composition.
  • Unreliable supply of uniform commercial size crayfish to the market.
  • Although there are significant innovations, this production strategy has remained largely unchanged in commercial farms.

ACH Novel Solutions

Among the knowledge-based technology advances, we now:
  • Produce significant numbers of high-quality anti-biotic free, specific pathogen free (SPF) juveniles in ponds or hatcheries.
  • Apply molecular marker assisted genetic selection programs to improve growth rate, disease resistance and juvenile production.
  • Obtain feed conversion rates of around 1 – 1.4: 1.
  • Eliminate water exchange and discharges of wastes to the environment.
  • Harvest 5-6 tonnes per hectare /140-day cycle, of 60-90 g monosex individuals.
  • Deliver consistent product sizes (60-90 g) to the market year-round.
  • Significantly increase production through growout modules that are economically viable, environmentally sustainable and socially responsible.

Learn more about how ACH implements best stocking practices and presents opportunities for investment in redclaw crayfish growout farming

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