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Table 4 Key production variables of the gilthead seabream farm before genetic change

From: Derivation of economic values for production traits in aquaculture species

Item FCR

Value

Number of juveniles stocked (year−1)

1,659,945

Feed consumption (kg/year)

1,070,177

Fish production (kg/year)

564,661

Cages stocked (year−1)

13.4

Average age at harvest (day)

539

Survival (%)

85.1

Biological FCR a (kg feed/kg fish)

1.80

Economic FCR b (kg feed/kg fish)

1.92

  1. aBiological FCR = feed consumption/(fish production + biomass mortality − biomass juveniles)
  2. bEconomic FCR = feed consumption/fish production