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Organic blue crab breeding method

A farming method and technology for blue crabs, which are applied in fish farming, application, climate change adaptation, etc., can solve problems such as organic blue crab farming methods that have not yet been seen, achieve outstanding environmental protection and food safety, and maintain the effect of natural flavor

Inactive Publication Date: 2007-04-25
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there have been no reports of organic mud crab breeding methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Choose breeding sites far away from pollution sources such as chemical factories, tanneries, and paper mills that do not meet the wastewater treatment standards. The bottom material uses existing shrimp ponds. ~32, the bottom is silt or silt. Choose natural crab seedlings in sea areas or artificial crab seedlings cultivated in accordance with the principles of organic aquaculture. The stocking time is determined according to different living habits such as Chinese shrimp, Penaeus monodon, Penaeus lanceolata, and Penaeus vannamei. The stocking density is 1 to 15,000 fish / mu. Shrimp seedlings are placed for 1 month first, and then crab seedlings are stocked at a density of 200-350 / mu, and they are released in rotations, and 2-4 batches can be caught in one year. The feeding amount of small miscellaneous fish and shrimp is about 6% of the body weight of the blue crab, and the shellfish is 25% of the body weight of the blue crab.

[0015] For disease prevention and contr...

Embodiment 2

[0017] Similar to Example 1, the difference lies in the polyculture of shrimp and crab: the stocking time is determined according to different living habits of Penaeus sinensis, Penaeus monodon, Penaeus vannamei, etc., and the stocking density is 1 to 12,000 tails / mu. Shrimp seedlings are placed for 1 month first, and then crab seedlings are stocked at a density of 250-400 / mu, and they are released in rotations, and 2-4 batches can be caught in one year. The feeding amount of small miscellaneous fish and shrimp is about 12% of the body weight of the blue crab, and the shellfish is 20% of the body weight of the blue crab. The perennial water temperature is 7-30°C, and the seawater salinity is 5-28.

Embodiment 3

[0019] Similar to Example 1, the difference is that razor clam crabs are used for polyculture, and the density of razor clam seedlings is 300~500 grains / m 2 , The stocking area does not exceed 20% of the total breeding area. The seedlings are covered with nylon and have nets to prevent blue crabs from digging inside. The density of seedling crabs is 1000-1500 / mu. The feeding amount of small miscellaneous fish and shrimp is about 10% of the body weight of the blue crab, and the shellfish is 25% to 35% of the body weight of the blue crab. In the early stage of breeding, microbial organic fertilizer can be used to adjust the water quality of fertilizer to facilitate the growth of razor clams. The perennial water temperature is 12-32°C, and the seawater salinity is 8-32.

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PUM

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Abstract

The invention relates to a method for cultivating organic green crab. Wherein, its cultivate water meets international standard as year temperature is 7-32Deg. C, salt density is 5-32, and bottom is mud or sand mud. And the invention selects the manual crab seed cultivated at organic cultivation or the natural crab seed; and it mixed cultivates the green crab with at least one of prawn, etc; it at least cultivates 2 times in one year; and the food is fresh natural biology, as acorn barnacle, oyster, etc, while the shelf feed amount is 20-35% of crab weight, and the fish feed amount is 6-12% of crab; and it uses burnt lime, bleaching powder to disinfect the substrate, and uses micro biological agent to improve the water quality.

Description

technical field [0001] The invention relates to aquatic products, in particular to a method for cultivating blue crabs according to the principle of organic aquaculture. Background technique [0002] The issue of food safety has attracted widespread attention from all walks of life, and has now become the four major global crises following population, resources and the environment. With the rapid development of China's aquaculture industry, factors such as environmental pollution of aquaculture water and drug abuse have led to a continuous decline in the quality of conventional aquatic products. As a sustainable development model, organic aquaculture aims to realize the coordinated development of healthy and safe aquatic farming and ecological environment protection. It is the development direction and inevitable trend of healthy aquatic farming in China in the 21st century (Lu Dong, Xi Yunguan, Xiao Xingji, et al. . Discussion on the Quality and Safety of Aquatic Products ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 叶海辉林琼武王桂忠李少菁陈学雷艾春香
Owner XIAMEN UNIV
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