Open Access
Table 3
Growth and survival of giant gourami after 6 weeks of feeding with four levels of fresh Azolla in replacement of commercial pellets. Data are means ± SD per treatment. For each parameter, different letters indicate significant differences between treatments.
| Parameters | A 100% Azolla | B 57% Azolla | C 26% Azolla | D 0% Azolla | p-values |
|---|---|---|---|---|---|
| Initial body weight (BWi, g) | 37.5 ± 7.0 | 36.2 ± 6.7 | 36.2 ± 5.5 | 36.8 ± 4.8 | NS1 |
| Final body weight (BWf, g) |
36.8 ± 6.8a | 54.5 ± 9.6b | 61.2 ± 10.3c | 68.4 ± 10.0d | <0.001 |
| Weight gain (g d–1) | –0.02 ± 0.01a | 0.43 ± 0.04b | 0.6 ± 0.05c | 0.75 ± 0.06d | <0.001 |
| Weight gain (%) | –1.8 ± 1.4a | 50.3 ± 5.3b | 69.1 ± 6.2c | 86.3 ± 8.8d | <0.001 |
| Biomass gain (g) | –77 ± 31.7a | 638 ± 129.2b | 958 ± 14.1c | 1174 ± 97.5d | <0.001 |
| SGR2 (% d–1) | –0.04 ± 0.03a | 0.97 ± 0.09b | 1.25 ± 0.09c | 1.48 ± 0.12d | <0.001 |
| FCR3 | – | 2.3 ± 0.69 | 2.7 ± 0.12 | 3.1 ± 0;21 | NS |
| Distributed pellets (g) | – | 1433 ± 55a | 2555 ± 128b | 3663 ± 42c | <0.001 |
| KFulton | 1.46 ± 0.16a | 1.56 ± 0.07b | 1.64 ± 0.09c | 1.69 ± 0.09d | < 0.001 |
| Survival (%) | 96.7 ± 2.9 | 95.8 ± 2.9 | 98.3 ± 2.9 | 96.7 ± 3.8 | NS1 |
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