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Natural selection breeding method for imported penaeus parent shrimps

A technology of natural elimination and prawns, applied in fish farming, application, climate change adaptation and other directions, can solve problems such as difficulty in determining the effect, and achieve the effect of preventing too few residues, large size and simple method.

Active Publication Date: 2014-05-28
海南中正水产科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current prawn breeding technology still screens from common cultured prawns. For example, Chinese patent CN1926970A discloses a method for breeding broodstock of Litopenaeus vannamei with anti-white spot syndrome virus characteristics, including broodstock selection, virus challenge, and elimination. Steps such as broodstock and broodstock breeding for disease and death after virus injection; Chinese patent CN102888459A discloses a method for identifying new species of prawns selected and bred over generations, using molecular biology techniques and molecular markers for identification, which can overcome phenotypic The characteristics are difficult to identify the difficulty of breeding new varieties over generations. Although these methods are supplemented by various scientific and advanced means to select parents with excellent traits, because the selection base is too large, it is tantamount to finding a needle in a haystack, and the effect is difficult to determine

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  • Natural selection breeding method for imported penaeus parent shrimps

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Start nursery in April, put the nauplii of imported broodstock (Litopenaeus vannamei) into several 200 cubic meters outdoor pools with heating and aeration equipment, add treated and sterilized seawater, and keep the water temperature at 30°C , Cover the pond with a light-transmitting film, and put 20,000 nauplii per cubic water body. When the nauplii become zoa-like larvae, they start to feed the single-celled algae cultured in the special algae culture tank, the flea II starts to feed the rotifers and a small amount of artificial feed, and the mysis starts to feed the nauplii of Artemia and artificial mating Feed until the larvae of 0.8cm can be put into the soil pond for cultivation.

[0022] The area of ​​the earthen pond is 30 mu, and the water depth is 1.2 meters. Before use, the pond should be cleared, disinfected and fertilized. The stocking density of imported broodstock is 5,000 fish / mu. At the same time, put in shrimp seedlings of Penaeus monodon, the size is...

Embodiment 2

[0025] After the Qingming Festival, seedlings start to be raised. The imported prawn seedlings are fully artificially cultivated in the indoor industrialized seedling workshop. The shrimp seedlings are cultivated to the size of 01.0cm. The fish pond is formed by building dikes and dams in the offshore area, with an area of ​​more than 100 mu. The dams have gates, and the tides are used to collect and drain water. In the early stage of breeding, part of the seawater is included, and the miscellaneous fish are removed by using the tea bran poisonous pond, and then part of the water is fed into the 40-mesh silk screen. . Before formal breeding, build a dike in the fish farm to isolate a small pond of 0.8 mu, or set up a 40-mesh silk screen cage in the fish farm, and mark the shrimp seedlings with a thickness of 3cm. When the shrimp seedlings are marked as thick as 3cm, the shrimp seedlings can be evacuated to Breeding in fish ponds. The stocking density is about 3,000 tails / mu. ...

Embodiment 3

[0028] Start nursery in May, put the nauplii of imported broodstock (Litopenaeus vannamei) into several 200 cubic meters of outdoor pools with heating and aeration equipment, add treated and sterilized seawater, and keep the water temperature at 30°C , Cover the pond with a light-transmitting film, and put 30,000 nauplius per cubic water body. When the nauplii become zoa-like larvae, they start to feed the single-celled algae cultured in the special algae culture tank, the flea II starts to feed the rotifers and a small amount of artificial feed, and the mysis starts to feed the nauplii of Artemia and artificial mating Feed until the larvae of 1cm can be put into earthen ponds for cultivation.

[0029] The earthen pond has an area of ​​25 mu and a water depth of 1.5 meters. Before use, the pond must be cleared, disinfected and fertilized. The stocking density of imported broodstock is 5,000 fish / mu. At the same time, put in shrimp seedlings of Penaeus monodon, the size is 1.2c...

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Abstract

The invention relates to a natural selection breeding method for imported penaeus parent shrimps, and belongs to the technical field of aquaculture. The method comprises the steps: in the penaeus mating season each year, putting healthy young shrimps, cultured in a young penaeus breeding pond, into an aquaculture pond, performing medium-selection-strength mixed culturing on the young shrimps and marine organisms which can enhance a certain beneficial character of the imported penaeus in the pond to obtain penaeus with the specific character after natural selection through natural intraspecific and interspecific competition, and performing strengthening cultivating in an indoor parent shrimp cultivating pool to form parent shrimps for young shrimp incubation in the next year. According to the parent shrimp cultivating method, through culturing by simulating natural environments with different types and performing natural competition and natural selection in a targeted and directional way with certain selection strength, characteristic individuals advantageous to local artificial breeding in the imported penaeus can be continuously kept, disadvantageous characteristic individuals are selected, and the individuals which more adapt to local environment and are more suitable for local breeding are kept, and are slow in degeneration, fast in growth and large in size.

Description

technical field [0001] The invention relates to a breeding technology for imported prawn broodstock, in particular to a breeding method for natural elimination of imported prawn broodstock, belonging to the technical field of aquaculture. Background technique [0002] my country has become the country with the largest shrimp farming area and the highest output in the world. In 2011, the total output of prawns in my country reached 1.56 million tons, of which the output of marine cultured prawns was 895,000 tons, an increase of about 160,000 tons compared with 733,000 tons in 2010. At present, the main production provinces of prawns in my country are Guangdong, Guangxi, and Hainan. The total output of these three provinces is close to about 70% of the total output of marine cultured prawns in the country. In the late 1990s, Litopenaeus vannamei broke through the breeding problems in my country. With its high yield, rapid growth, few diseases, and strong adaptability, it was ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 叶宁叶富良彭树蜂王成桂
Owner 海南中正水产科技有限公司