Open Access
Appendix A
Growth performances and survival rates of fish by treatment (Semi-intensive coupled: SIC, Semi-intensive: SI and Extensive: E), fishpond replicate and fish species.
| Treatment | SIC | SI | E | |||
|---|---|---|---|---|---|---|
| Replicate | 1 | 2 | 1 | 2 | 1 | 2 |
| Total number of fish stocked | ||||||
| Carp | 660 | 660 | 660 | 660 | 330 | 330 |
| Roach | 60 | 60 | 60 | 60 | 30 | 30 |
| Perch | 10 | 10 | 10 | 10 | 5 | 5 |
| Biomass at fish stocking (g) | ||||||
| Carp | 4 931 | 4 698 | 4 907 | 5 028 | 2 635 | 2 495 |
| Roach | 2 113 | 2 251 | 2 236 | 2 157 | 1 952 | 1 080 |
| Perch | 110 | 106 | 106 | 112 | 53 | 53 |
| Total | 7 153 | 7 055 | 7 249 | 7 297 | 4 640 | 3 628 |
| Density (kg.ha−1) | 143 | 141 | 145 | 146 | 93 | 73 |
| Mean weight at stocking (g) | ||||||
| Carp | 7.5 | 7.1 | 7.4 | 7.6 | 8.0 | 7.6 |
| Roach | 35.2 | 37.5 | 37.3 | 35.9 | 65.1 | 36.0 |
| Perch | 11.0 | 10.6 | 10.6 | 11.2 | 10.6 | 10.5 |
| Total number of fish harvested | ||||||
| Carp | 516 | 503 | 455 | 506 | 244 | 230 |
| Roach fry1 | 299 | 1 133 | 943 | 294 | 1 082 | 7 |
| Roach | 58 | 53 | 52 | 52 | 26 | 30 |
| Perch | 4 | 7 | 10 | 9 | 3 | 4 |
| Biomass at harvest (g) | ||||||
| Carp | 96 102 | 93 766 | 115 684 | 110 698 | 21 829 | 26 062 |
| Roach | 5 063 | 5 956 | 4 441 | 4 416 | 2 231 | 3 442 |
| Roach fry | 1 109 | 1 526 | 2 527 | 446 | 4 671 | 116 |
| Perch | 319 | 658 | 1 262 | 654 | 244 | 417 |
| Total fish | 102 593 | 101 906 | 123 913 | 116 214 | 28 975 | 30 037 |
| Total fish density, kg.ha−1 | 2 052 | 2 038 | 2 478 | 2 324 | 580 | 601 |
| Mean weight at harvest (g) | ||||||
| Carp | 186.2 | 186.4 | 254.2 | 218.8 | 89.5 | 113.3 |
| Roach fry | 4.7 | 3.1 | 2.7 | 1.5 | 4.3 | 16.6 |
| Roach | 87.3 | 112.4 | 85.4 | 84.9 | 85.8 | 114.7 |
| Perch | 79.7 | 94.0 | 126.2 | 72.6 | 81.3 | 104.1 |
| Survival rates of fish stocked (%) | ||||||
| Carp | 78 | 76 | 69 | 77 | 74 | 70 |
| Roach | 97 | 88 | 87 | 87 | 87 | 100 |
| Perch | 40 | 70 | 100 | 90 | 60 | 80 |
| Mean specific growth rate (%.day−1) | ||||||
| Carp | 1.47 | 1.48 | 1.56 | 1.53 | 1.05 | 1.16 |
| Roach | 0.43 | 0.48 | 0.34 | 0.35 | 0.07 | 0.57 |
| Perch | 0.53 | 0.90 | 1.23 | 0.87 | 0.76 | 1.03 |
| Total net weight gain (kg) | ||||||
| Carp | 91.2 | 89.1 | 110.8 | 105.7 | 19.2 | 23.6 |
| Total from fish stocked | 94.3 | 93.3 | 114.1 | 108.5 | 19.7 | 26.3 |
| Total fish | 95.4 | 94.9 | 116.7 | 108.9 | 24.3 | 26.4 |
| Production intensity (kg.ha−1) | 1 909 | 1 897 | 2 333 | 2 178 | 487 | 528 |
| Quantity of food supplied (kg MS) | 122 | 122 | 122 | 122 | ||
| Mean food conversion ratio (kg.kg−1) | ||||||
| Carp | 1.34 | 1.37 | 1.10 | 1.16 | ||
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