days per PC Power consumption Fresh water demand Personnel costs Production per one PC
  per day (kW) total per PC (kW) per day (m3) total per PC
(m3)
per day (hours) total per PC
(hours)
pcs kg
Nursing system 46 20.9 960.5 0.86 39.70 + 3.90* < 4 < 184 X X
Rearing system 34 25.7 873.1 3.46 117.64 + 11.00* < 3 < 102 X X
Production cycle 80 X 1 833.6 4.32 157.34 + 14.90* X < 286 63 200 127
  Days Power consumption (kW) Water demand (m3) Personnel costs (hours) Total costs ($)** Total production Net profit per year
($)**
(pcs) ($)**
Four PC per year                
  336 7 334.4 688.4 < 1 280 < 22 240 252 800 50 560 28 320
Five PC per year                
  345 9 168.0 860.5 < 1 725 < 27 810 316 000 63 200 35 390
Table 4: The summary table for the recirculation hatchery system for one production cycle (PC) including power consumption (kW), fresh water demand (m3), personnel costs (hours), and production (pcs, kg), and the summary table for four and five production cycles per year including calculation of total electricity, water, and personnel demands, total costs, total production, and net profit per year.
*Initial water volume necessary for filling all tanks.
**Converted from real fingerling prices and real costs of eyed ova, personnel, electricity, feed, and other costs of the company at the study site.
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