Table 2.
Water parameters during the nursey and growth phases of cultivation of shrimp fed with protected sodium butyrate (PSB).
| Nursey phase | ||||||||
|---|---|---|---|---|---|---|---|---|
| Treatment PSB (kg/t) |
pH | Conductivity (µS/cm) |
Salinity (ppm) |
Temperature (°C) |
DO (mg/L) |
TDS (mg/L) |
Ammonia (mg/L) |
Nitrite (mg/L) |
| PSB|0 kg/t | 8.01 ± 0.19 | 4.41 ± 0.04 | 2.74 ± 0.16 | 29.71 ± 0.92 | 6.73 ± 0.21 | 2.21 ± 0.81 | 0.025 ± 0.002 | 0.04 ± 0.001 |
| PSB|2 kg/t | 8.24 ± 0.13 | 4.41 ± 0.02 | 2.42 ± 0.14 | 29.43 ± 0.96 | 7.00 ± 0.23 | 2.21 ± 0.84 | 0.010 ± 0.002 | 0.02 ± 0.001 |
| PSB|4 kg/t | 8.24 ± 0.14 | 4.43 ± 0.01 | 2.43 ± 0.11 | 29.18 ± 0.89 | 7.00 ± 0.20 | 2.22 ± 0.87 | 0.010 ± 0.002 | 0.04 ± 0.001 |
| PSB|8 kg/t | 8.10 ± 0.15 | 4.42 ± 0.03 | 2.42 ± 0.21 | 29.85 ± 0.91 | 7.35 ± 0.23 | 2.21 ± 0.85 | 0.000 ± 0.002 | 0.02 ± 0.001 |
|
| ||||||||
| Growth phase | ||||||||
|
Treatment
PSB (kg/t) |
pH |
Conductivity
(µS/cm) |
Salinity
(ppm) |
Temperature
(°C) |
DO
(mg/L) |
TDS
(mg/L) |
Ammonia
(mg/L) |
Nitrite
(mg/L) |
|
| ||||||||
| PSB|0 kg/t | 7.45 ± 0.32 | 5.34 ± 0.35 | 2.98 ± 0.34 | 28.65 ± 0.73 | 6.32 ± 0.32 | 3.02 ± 0.37 | 0.02 ± 0.01 | 0.05 ± 0.001 |
| PSB|2 kg/t | 7.52 ± 0.25 | 5.67 ± 0.28 | 2.87 ± 0.38 | 28.78 ± 0.81 | 6.44 ± 0.42 | 3.15 ± 0.31 | 0.02 ± 0.01 | 0.03 ± 0.001 |
| PSB|4 kg/t | 7.83 ± 0.21 | 5.38 ± 0.17 | 2.90 ± 0.39 | 28.56 ± 0.78 | 6.49 ± 0.38 | 3.16 ± 0.33 | 0.02 ± 0.01 | 0.04 ± 0.001 |
| PSB|8 kg/t | 7.59 ± 0.24 | 5.44 ± 0.21 | 2.92 ± 0.28 | 28.73 ± 0.82 | 6.38 ± 0.32 | 3.32 ± 0.38 | 0.02 ± 0.01 | 0.03 ± 0.001 |