Bencze, F. and I. Fehér, 1977 Hungarian experiences of freshwater fish breeding. National Council of Agricultural Co-operatives, Budapest.
Szalay, M., 1975 Controlled reproduction and rearing of Lucioperca lucioperca. Workshop on Controlled Reproduction of Cultivated Species, FAO-EIFAC Technical Paper No. 25:174–180.
PERCENTAGE OF LOSS AND GAIN OF WEIGHT (IN g) OF FEMALE SPAWNERS DURING HYPOPHYSATION
Common Carp
| Number of fish | On arrival at hatchery | First injection (After 2 days) | Percentage loss | Second injection (After 12 h) | Percentage loss or gain | Stripping (After 12 h) | Percentage loss or gain | Result of hypophysation | |
| Lot No.1 | 1 | 6 690 | 6 500 | -2.84 | 6 630 | +2.00 | 6 700 | +1.06 | ovulated |
| 2 | 6 760 | 6 550 | -3.11 | 6 110 | +0.91 | 6 680 | +1.06 | ovulated | |
| 3 | 6 650 | 6 400 | -3.76 | 6 570 | +2.66 | 6 670 | +1.52 | ovulated | |
| 4 | 7 370 | 7 160 | -2.85 | 7 200 | +0.56 | 7 380 | +2.52 | ovulated | |
| 5 | 7 320 | 7 060 | -3.55 | 7 080 | +0.28 | 7 080 | - | not ovulated | |
| 6 | 9 270 | 9 020 | -2.70 | 9 030 | +0.11 | 9 140 | +1.22 | not ovulated | |
| 7 | 5 410 | 5 240 | -3.14 | 5 240 | - | 5 350 | +2.10 | not ovulated | |
| Lot No.2 | (Immediately on arrival at hatchery) | (After 12 h) | (After 12 h) | ||||||
| 1 | 6 470 | 6 560 | +1.39 | 6 700 | +2.13 | ovulated | |||
| 2 | 5 930 | 6 000 | +1.18 | 6 300 | +5.00 | ovulated | |||
| 3 | 5 310 | 5 320 | +0.18 | 5 370 | +0.93 | ovulated | |||
| 4 | 4 460 | 4 500 | +0.89 | 4 550 | +1.11 | ovulated | |||
| 5 | 5 690 | 5 630 | -1.05 | 5 620 | -0.17 | not ovulated | |||
| 6 | 6 200 | 6 000 | -0.32 | 6 000 | - | not ovulated | |||
| 7 | 5 000 | 4 830 | -3.40 | 4 810 | -0.41 | not ovulated | |||
| 8 | 5 850 | 5 800 | -0.85 | 5 780 | -0.34 | not ovulated | |||
| 9 | 4 850 | 4 900 | -1.01 | 4 960 | +1.22 | not ovulated | |||
| (After 12 h) | |||||||||
| Lot No.3 | 1 | 5 470 | 5 640 | +3.10 | ovulated | ||||
| 2 | 6 730 | 6 870 | +2.08 | ovulated | |||||
| 3 | 6 520 | 6 650 | +1.99 | ovulated | |||||
| 4 | 6 860 | 7 020 | +2.33 | ovulated | |||||
| 5 | 6 850 | 7 000 | +2.18 | ovulated | |||||
| 6 | 5 380 | 5 480 | +1.85 | not ovulated | |||||
| 7 | 5 400 | 5 570 | +3.14 | not ovulated | |||||
| 8 | 8 050 | 7 990 | -0.74 | not ovulated | |||||
| 9 | 7 960 | 7 000 | -12.06 | not ovulated | |||||
| 10 | 5 830 | 5 730 | -1.55 | not ovulated | |||||
Bighead
| Number of fish | Control (Weight in g) | Number of fish | Injected with pituitary extract (Weight in g) | Result of hypophysation | ||
| Initial | After 24 h | Initial | At the time of stripping (After 24 h) | |||
| 1 | 2 350 | 2 120 | 1 | 4 800 | 4 940 | ovulated |
| 2 | 4 770 | 4 610 | 2 | 3 670 | 3 770 | ovulated |
| 3 | 5 080 | 4 870 | 3 | 2 730 | 3 040 | ovulated |
| 4 | 1 540 | 1 380 | ||||
| 5 | 4 340 | 4 070 | ||||
Fig.1 SEPHADEX G-100 FRACTIONATION OF CARP PITUITARY EXTRACT
| INDEX: | C = CYTOPLASM | Y = YOLK |
| FTR = TRANSPARENT FLUID | S = EGG SHELL | |
| TTU = TURBID FLUID | F = FERTILITY |
Fig.2 DIAGRAMMETIC REPRESENTATION OF THE CENTRIFUGAL PATTERN OF UNFERTILIZED EGGS OF DIFFERENT CARP SPECIES
