GB/T 5055-2008Black carp, grass carp, silver carp and bighead carp - Parents (English PDF)

3.1

from black carp, grass carp, silver carp, bighead natural germplasm bank selecting broodstock, or collecting seed or young fish from the waters specially developed into

Broodstock.

3.2

broodstock selected from rivers, reservoirs and lakes without artificial stocking of natural waters, or natural seed collected from the waters or the young

Fish has been specifically developed into broodstock.

3.3

broodstock provided by holders of seed production license of national, provincial stock field, or from the stock field of seed or juveniles specially

Developed into broodstock.

4.1 Accession

Black carp, grass carp, silver carp, bighead carp broodstock germplasm shall conform to GB 17715, GB 17716, GB 17717 and GB 17718.

4.2 Appearance

Black carp, grass carp, silver carp, bighead carp broodstock should shape, normal body color, infirmity, disease, disability and no distortion.

4.3 Characteristics of breeding broodstock

Male broodstock. pectoral fin, gill cover appears Starchaser, Gently press the abdomen milky semen outflow from the cloaca.

Female broodstock. pectoral fin, gill cover is not obvious or no Starchaser Starchaser; abdominal swelling, soft and flexible, slightly prominent cloaca, rosy.

4.4 breeding age and weight

First sexual maturity of herring, grass carp, silver carp, bighead not be used as artificial propagation of broodstock.

Grown in different catchments of herring, grass carp, silver carp, bighead the age of sexual maturity, reproduction allowed minimum age and minimum weight and life

Are shown in Table 1, Table 2, Table 3, Table 4.