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Family breeding method for pearl white strain red tilapia

A technology of red tilapia and pearl white, applied in fish farming, application, climate change adaptation, etc., can solve unreported problems, speed up the breeding process, improve breeding efficiency, and maintain population genetic diversity Effect

Active Publication Date: 2015-03-25
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] At present, the breeding work of red tilapia mainly uses growth traits as the purpose traits for breeding, while the work of family selection for body color as the purpose traits has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The family selection method of a kind of pearly white strain red tilapia of the present invention comprises following selection steps:

[0026] From 5,000 2-year-old red tilapia fish farms in Qiting Town, Yixing, Jiangsu, 200 male and female broodstock of red tilapia with pearly white (pink white) body surface and no red spots or black spots were selected. 50 male and female red tilapias with large body weight, strong body and plump body were used as alternative broodstock. Separate 100 male and female broodstock into cages with a length of 1 meter, a width of 1 meter, and a height of 1 meter for adaptive cultivation. The cages are placed in a rectangular cement pool with a water depth of 1 meter indoors. (Length 7 meters, width 3 meters), put 5 male red tilapias or 5 female red tilapias in each cage, put 10 cages for each male and female, and feed tilapia with a protein content of 40% The compound feed was fed 3 times a day, and the daily feeding amount was 5% of the ...

Embodiment 2

[0029] The family selection method of a kind of pearly white strain red tilapia of the present invention comprises following selection steps:

[0030]From the fishing ground in Shengze Town, Wujiang, Jiangsu Province, 200 male and female broodstock of red tilapia with pearly white (pink white) body surface and no erythema or black spot were selected from 4000 first-year-old red tilapia. Select 50 male and female red tilapias with large body weight, strong body and plump body as alternative broodstock. Separate 100 candidate broodstock males and females into cages with a length of 2 meters, a width of 1 meter, and a height of 1 meter for adaptive cultivation. The cages are placed in an outdoor pond with a water depth of 2 meters. Put 10 male red tilapias or 10 female red tilapias in each net cage, put 5 net cages for each male and female, and feed tilapia compound feed with a protein content of 40%, 3 times a day, daily cast The feeding amount was 5% of the fish body weight, a...

Embodiment 3

[0032] The family selection method of a kind of pearly white strain red tilapia of the present invention comprises following selection steps:

[0033] From the fishing ground of Fengyu Town, Yangzhong, Jiangsu, 200 male and female broodstock of red tilapia with pearly white (pink white) body surface and no erythema or black spot were selected from 2000 first-year-old red tilapia. After measuring their weight, they were selected 50 male and female red tilapias with large body weight, strong body and plump body were used as alternative broodstock. Separate 100 male and female broodstock into cages with a length of 3 meters, a width of 3 meters, and a height of 1 meter for enhanced adaptive cultivation. The cages are placed in a 10-acre pond with an outdoor water depth of 2 meters. , put 10 male red tilapias or 10 female red tilapias in each cage, put 5 cages for each of the males and females, and feed the tilapia compound feed with a protein content of 40%, 3 times a day, The d...

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PUM

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Abstract

The invention provides a family breeding method for pearl white strain red tilapia. The method includes the steps that (1) parent fish selection is conducted, the red tilapia with the pearl white body surface and the whole body being free of red spots or black spots is picked out from a red tilapia group with serious body color differentiation, and the red tilapia with obvious growth advantages is used as standby parents; (2) family establishment is conducted, the selected male and female parents are placed into a net cage for carrying out adaptation reinforcement cultivation, and manual orientation mating, hatching and seedling cultivating are independently performed according to the proportion of one to one; (3) pearl white strain breeding of the red tilapia is conduced, the growing juvenile fish stage and the adult fish stage of the red tilapia are determined, the pearl white red tilapia family with the high proportion and good growth traits are screened out to be used as the breeding base family of the next generation, 2-4 generation breeding is conducted according to the method, and accordingly the pearl white strain red tilapia can be bred. By the adoption of the method, inbreeding is avoided, the variety degeneration of the red tilapia is effectively prevented, and the population genetic diversity is kept; the breeding process is accelerated, and the breeding efficiency is improved.

Description

technical field [0001] The invention relates to a family selection method of pearly white strain red tilapia, belonging to the technical field of aquaculture. Background technique [0002] Red tilapia is a mutant hybrid of Nile tilapia and Mozambique tilapia. Red tilapia has a round and thick body, high meat yield, fresh and tender meat, bright body color, fresh taste, no small spines between muscles, and no black film in the body cavity, which is suitable for different groups of people. In Southeast Asia, the market share of red tilapia is more than 60%, while in my country, the red tilapia industry is in its infancy and the market space is huge. At present, the sources of red tilapia species in my country are complicated, and there are no effective breeding measures for species conservation, which makes the problems of red tilapia germplasm degradation and body color separation increasingly serious. Therefore, it is imminent to carry out improved breeding of red tilapia....

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81A01K61/00
Inventor 朱文彬董在杰梁政远
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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