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Breeding method for late-maturing blue crabs

A breeding method and technology for mud crabs, applied in fish farming, application, climate change adaptation, etc., can solve the problems of no feeding, high price, no growth, etc. The effect of biting each other

Inactive Publication Date: 2015-09-16
董守夫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the seasonal characteristics of the climate in the south, most of the existing blue crab cultures are carried out in open-air culture ponds from March to October every year. After October, the blue crabs drop with the temperature, and the blue crabs enter the soil at the bottom of the culture ponds to survive the winter. It grows and is not easy to catch. Therefore, the supply of blue crabs in the seafood market after autumn is insufficient and the price is expensive. Especially during the "Double Festival" period, the supply of blue crabs is scarce, which is far from meeting market demand.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: a kind of breeding method of late-maturing mud crab, comprises the following steps:

[0017] (1) Selection point: choose a conventional temperature-controlled seedling pond as a breeding site in the southern region;

[0018] (2) The structure of the nursery pond: The nursery pond is designed according to the specifications of 9m*4m*2m, and 30 strings of crab cages are placed in each pond, with 6 crab cages in each string. Rod, every string of crab pots is fixed on the support rod by hook. The size of the crab cage is 30cm*30cm*20cm. There is a feeding port on the side of the crab cage, and a pull cover on the top. The blue crabs are placed in one crab and one cage;

[0019] (3) Control of water quality in nursery ponds: salinity is 12~15, temperature is 17°C~20°C;

[0020] (4) Selection of seedlings: From May to June, select young crabs born 20 days old with good quality as breeding objects and put them into the nursery pond;

[0021] (5) Ratio of bait:...

Embodiment 2

[0025] Embodiment 2: a kind of breeding method of late-maturing mud crab, comprises the following steps:

[0026] (1) Selection point: choose a conventional temperature-controlled seedling pond as the breeding site;

[0027] (2) The structure of the nursery pond: The nursery pond is designed according to the specifications of 9m*4m*2m, and 30 strings of crab cages are placed in each pond, with 6 crab cages in each string. Rod, every string of crab pots is fixed on the support rod by hook. The size of the crab cage is 30cm*30cm*20cm. There is a feeding port on the side of the crab cage, and a pull cover on the top. The blue crabs are placed in one crab and one cage;

[0028] (3) Control of water quality in nursery ponds: salinity is 15~18, temperature is 20°C~23°C;

[0029] (4) Selection of seedlings: From May to June, select young crabs born 25 days old with good quality as breeding objects and put them into the nursery pond;

[0030] (5) Ratio of bait: crush small fish, cr...

Embodiment 3

[0034] Embodiment 3: a kind of breeding method of late-maturing mud crab, comprises the following steps:

[0035] (1) Selection point: choose a conventional temperature-controlled seedling pond as the breeding site;

[0036] (2) The structure of the nursery pond: The nursery pond is designed according to the specifications of 9m*4m*2m, and 30 strings of crab cages are placed in each pond, with 6 crab cages in each string. Rod, every string of crab pots is fixed on the support rod by hook. The size of the crab cage is 30cm*30cm*20cm. There is a feeding port on the side of the crab cage, and a pull cover on the top. The blue crabs are placed in one crab and one cage;

[0037] (3) Control of water quality in nursery ponds: salinity is 18~20, temperature is 23°C~26°C;

[0038] (4) Selection of seedlings: From May to June, select young crabs born 30 days old with good quality as breeding objects and put them into the nursery pond;

[0039] (5) Ratio of bait: crush small fish, cr...

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Abstract

The invention discloses a breeding method for late-maturing blue crabs, and relates to the technical field of aquaculture. The method comprises the steps of site selecting, nursery pond constructing, nursery pond water quality controlling, crab seeding selecting, bait matching, feed feeding, nursery pond water quality managing, harvesting and the like. According to the breeding method for the late-maturing blue crabs, the blue crab breeding season is adjusted so that the traditional harvest peak season of blue crab breeding in south of China can be staggered, and the fresh and cheap blue crabs are supplied to consumers of the untraditional blue crab harvest season.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for cultivating late-maturing blue crabs. Background technique [0002] Commonly known as Scylla serrata and red sturgeon, blue crabs are distributed in harbors and coastal mangrove swamps in southern China, Japan, India, Africa and other tropical and subtropical waters. In my country, they are mainly produced in Zhejiang, Fujian, Taiwan, south of the Yangtze River estuary. Along the coast of Guangdong and Guangxi, blue crabs have delicious meat, unique flavor, rich nutrition, and can also be used as medicine. The main cultured species cultivated in the south coast. With the maturation of breeding technology, the income from breeding mud crabs has become the main source of income for the coastal farming industry. Due to the seasonal characteristics of the climate in the south, most of the existing blue crab cultures are carried out in open-air culture ponds from Marc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A01K61/59
CPCY02A40/81
Inventor 董守夫杨锦荣林隆水
Owner 董守夫
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