Ammonia excretion and total N budget for gilthead seabream (Sparus aurata) and its effect on water quality conditions

@inproceedings{Porter1987AmmoniaEA,
  title={Ammonia excretion and total N budget for gilthead seabream (Sparus aurata) and its effect on water quality conditions},
  author={Chas. Porter and Michael D. Krom and Mandy Robbins and L. Brickell and Ady Davidson},
  year={1987}
}
Diurnal ammonia excretion rate was measured for 3-, 40- and 90-g gilthead seabream at 24°C at 4-hourly intervals in experimental tanks. The excretion rates reached peaks of 70, 36.4 and 25.2 mg N kg−1 h−1 for 3-, 40- and 90-g fish, respectively, during the first sampling period (0–4.5 h). In a similar experiment run at 21°C, a peak excretion rate of 21.6 mg N kg−1 h−1 was reached in 0–3 h for 45-g fish. The excretion rate dropped from the peak value to a low level of 10–16 mg NH4-N kg−1 h−1… CONTINUE READING

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