Method for culturing swimming crabs for two batches each year

A technology of Portunus trituberculatus and its breeding method, which is applied in the field of breeding of Portunus trituberculatus twice a year, can solve problems such as difficulty in buying, waste in breeding ponds, and inability to meet consumer needs, and achieve high economic benefits and increase utilization. Effect

Active Publication Date: 2017-11-21
MARINE FISHERIES RES INST OF ZHEJIANG
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, from May to August, whether it is wild crabs or farmed crabs, it is difficult to buy in the market and cannot meet the needs of consumers.
[0004] I

Method used

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  • Method for culturing swimming crabs for two batches each year
  • Method for culturing swimming crabs for two batches each year
  • Method for culturing swimming crabs for two batches each year

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Embodiment Construction

[0025] The present invention will be further described below with reference to the embodiments and the accompanying drawings.

[0026] The method for cultivating the swimming crabs three warts in the embodiment twice a year, as attached figure 1 , attached figure 2 The main technical points are as follows.

[0027] (I) Breeding mode:

[0028] The first crop: put the egg-bearing crabs into the nursery area at the end of April to cultivate large-scale seedlings, transfer them to the breeding area from the end of July to the beginning of August, emasculate and retain the females, and breed the finished crabs with 250-350 grams per piece. Launched in January-February of the following year; second crop: put the second batch of egg-carrying crabs into the nursery area at the beginning of August to cultivate large-sized seedlings, and keep the nursery area warm after November to help the juvenile crabs survive the winter until April of the following year. In the middle of the mon...

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Abstract

The invention discloses a method for culturing swimming crabs for two batches each year. The culture mode is as follows: for the first batch, egg-carrying crabs are released into a nursery area in late April, large-size larvae are raised, and are transferred into a culture area in late July to early August, the males are removed with the females left, and after being cultured into roe crab products, each of which is 250g to 350g, the swimming crabs are put into the market in January or February of the next year; for the second batch, the second batch of egg-carrying crabs are released into the nursery area in early August, large-size larvae are raised, the temperature of the nursery area is kept after November to help the juvenile crabs to live through the winter, the crabs are transferred into the culture area in middle April of the next year, the female and the male are raised together, and after being cultured into meat crab products, each of which is 150g to 200g, the big crabs start to be caught with the small crabs left in June until late July. The culture method disclosed by the invention plugs the gap of supplying of swimming crabs from May to August, satisfying the demand of consumers; moreover, the utilization rate of ponds is increased, and higher economic benefit can be obtained from a culture pond with the same area.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for culturing Portunus trituratus twice a year. Background technique [0002] The swimming crab is one of the important species of Chinese aquaculture. In recent years, with the breakthrough of artificial breeding technology, the pond aquaculture industry has developed rapidly. At present, there are two main ways to cultivate the swimming crab: one is to raise seedlings from the end of April to the beginning of May, cultivate in the original pond, and fish and market before and after the Spring Festival (January-March); the other is to buy from the end of May to the beginning of June. Crab seedlings are cultivated until they are marketed around the Spring Festival (January-March). [0003] The above-mentioned breeding method is one crop a year, and the sales time is concentrated and short-lived, so it is necessary to catch wild swimming crabs to meet the market dem...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 何杰许文军
Owner MARINE FISHERIES RES INST OF ZHEJIANG
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