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Method for pairing carps to breed offspring seeds

A carp and fry technology, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of affecting the production and efficiency of aquaculture, unclear kinship of broodstock, and uneven quality of fry, etc., to avoid inbreeding. The effect of recession, uniform size, fast growth

Active Publication Date: 2014-04-30
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the broodstock used in this breeding method comes from a group, and the genetic relationship between the broodstock is unclear. Inbreeding may occur between many female and male fish, and the produced seed will have the problem of inbreeding depression, resulting in The quality is uneven, which affects the production and efficiency of farming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A carp pair breeding method for producing high-quality fry adopts the following cultivation steps:

[0017] (1) Select species of fish: Estimate the breeding value of the carp to be selected according to the family; select 2 families from the top 10 families with the average estimated breeding value;

[0018] The inbreeding coefficient between the family ranked No. 1 and the No. 4 family in average breeding was 0.020. In the No. 1 family, 185 female fish weighing more than 2 kg were selected; 185 male fish over 1.5 kg;

[0019] (2) Hormone injection: inject artificial hormone LRHA at 4~6μg / kg to female fish selected in step (1), inject human chorionic gonadotropin HCG at 800~1000IU; inject artificial hormone at 2~3μg / kg to male fish Hormone LRHA, injection of human chorionic gonadotropin HCG at 400~5000IU;

[0020] (3) Cultivation: Place hormone-injected female and male fish in a pond of about 1333 square meters, place fish nests at a density of 4 to 5 per female fish...

Embodiment 2

[0022] A carp pair breeding method for producing high-quality fry adopts the following cultivation steps:

[0023] (1) Select species of fish: Estimate the breeding value of the carp to be selected according to the family; select 2 families from the top 10 families with the average estimated breeding value; The inbreeding coefficient between is 0.011;

[0024] Select 380 female fish weighing more than 3 kg from the second-ranked family, and 380 male fish weighing more than 2.5 kg from the sixth-ranked family;

[0025] (2) Hormone injection: inject artificial hormone LRHA at 4~6μg / kg to female fish selected in step (1), inject human chorionic gonadotropin HCG at 800~1000IU; inject artificial hormone at 2~3μg / kg to male fish Hormone LRHA, injection of human chorionic gonadotropin HCG at 400~5000IU;

[0026] (3) Cultivation: Put the hormone-injected female and male fish in a pond of about 3333 square meters, and place fish nests at a density of 4 to 5 female fish per fish. Aft...

Embodiment 3

[0028] A carp pair breeding method for producing high-quality fry adopts the following cultivation steps:

[0029] (1) Select species of fish: Estimate the breeding value of the carp to be selected according to the family; select 2 families from the top 10 families with the average estimated breeding value;

[0030] The average inbreeding coefficient between the third-ranked family and the fifth-ranked family is 0.016. In the fifth-ranked family, 210 female fish weighing more than 2 kg were selected, and in the third-ranked family, 210 females with a weight of more than 2 kg were selected. 210 male fish over 1 kg;

[0031] (2) Hormone injection: inject artificial hormone LRHA at 4~6μg / kg to female fish selected in step (1), inject human chorionic gonadotropin HCG at 800~1000IU; inject artificial hormone at 2~3μg / kg to male fish Hormone LRHA, injection of human chorionic gonadotropin HCG at 400~5000IU;

[0032] (3) Cultivation: Place hormone-injected female and male fish in a...

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Abstract

The invention relates to a method for pairing carps to breed offspring seeds and belongs to the technical field of aquatic product fry cultivation. The method comprises the steps of respectively selecting two genealogies from genealogies ranking the top 10 in average estimation seed breeding value, selecting female fish growing fastest in one genealogy and male fish growing fastest in the other genealogy, respectively injecting hasten parturition hormone to the female fish and the male fish, placing the female fish and the male fish in the same pond after completion of injection, and then placing fish nests in the pond for collecting germ cells. The germ cells can hatch for cultivation production in 5-7 days at water temperature of 18-22 DEG C. According to the method, the female carps and the male carps which are good in shape and far from each other in genetic relationship are respectively selected for pairing breeding, so that high-quality carp seeds which are quick in growth and neat in specification are produced.

Description

technical field [0001] The invention relates to a method for paired breeding of carp seed, in particular to a method for paired breeding of carp for producing high-quality seed, and belongs to the technical field of aquatic product breeding. Background technique [0002] Carp seed production usually involves selecting dozens to hundreds of pairs of mature broodstock in a group. After injecting oxytocin, the broodstock is placed in a pond and a fish nest is placed. The eggs are attached to the fish nest; put the fish nest with fertilized eggs into the hatching tank, after 2-3 days of incubation, the fish fry will emerge from the membrane, and after another 2-3 days, you can get water flower seedlings, and continue to cultivate for 15-20 days. Days, you can get Wuzi seedlings. Seeds can be sold for breeding. [0003] However, the broodstock used in this breeding method comes from a group, and the genetic relationship between the broodstock is unclear. Inbreeding may occur be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 董在杰朱文彬
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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