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Method for ecologically breeding river crabs

An ecological farming and river crab technology, applied in fish farming, application, climate change adaptation and other directions, can solve the problems of imperfect artificial crab farming experience, destruction of the ecological environment of river crabs, low survival rate of river crabs, etc., to prevent crab carapace ulcers, Increase the dissolved oxygen in water and the effect of fresh and tender meat

Inactive Publication Date: 2018-04-13
HEFEI KANGQINGYUAN BREEDING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are still many deficiencies in the technology of artificially cultivating river crabs, and people's experience in artificially cultivating crabs is still not perfect
Crab breeding requires different bait and growth environment at different stages. Many technicians ignore the scientific setting of the ecological environment for aquaculture of river crabs, use industrial compound feed, and blindly use drugs, causing damage to the ecological environment of river crabs, resulting in The survival rate of river crabs is low and the quality is declining

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of river crab ecological culture method, comprises the following steps:

[0026] 1) Pond selection: Choose a water area with good water quality, no pollution, and a flat bottom, surround it with a fence, and build a pond. The depth of the pond is 1m, and 0.6mm high anti-escape facilities are installed around it. net, drain the water in the pond, remove the natural enemy organisms of river crabs, expose to the sun for 3 days, and obtain an empty pond;

[0027] 2) Pond environment construction: install hoses with multiple air outlets at the bottom and wall of the pool, the hoses are connected to the aerator, and oxygen is filled into the pond through the aerator and hoses to avoid suffocation of river crabs; then Put into the deep water of 0.8m in the pond, put in the ratio of 90kg per mu and plant reeds after quicklime disinfection, the coverage area of ​​reeds accounts for 50% of the pond area, throw in slow-release nutrients (the slow-release nutrients are kaoli...

Embodiment 2

[0034] A kind of river crab ecological culture method, comprises the following steps:

[0035] 1) Pond selection: Choose a water area with good water quality, no pollution, and a flat bottom, surround it with a fence, and build a pond. The depth of the pond is 1.2m, and 0.8m high anti-escape facilities are installed around it. filter screen, drain the water in the pond, remove the natural enemy organisms of river crabs, expose to the sun for 5 days, and obtain an empty pond;

[0036] 2) Pond environment construction: install hoses with multiple air outlets at the bottom and wall of the pool, the hoses are connected to the aerator, and oxygen is filled into the pond through the aerator and hoses to avoid suffocation of river crabs; then Put 1m deep water into the pond, put quicklime in the proportion of 80kg per mu for disinfection, and then plant reed and Elodea. , the mixture of medical stone and decomposed farmyard manure, the weight ratio is 7:3:2), place shelter, adjust t...

Embodiment 3

[0043] A kind of river crab ecological culture method, comprises the following steps:

[0044] 1) Pond selection: Choose a water area with good water quality, no pollution, and a flat bottom, surround it with a fence, and build a pond. The pond is 1m deep, and 0.7m high anti-escape facilities are installed around it. net, drain the water in the pond, remove the natural enemy organisms of river crabs, expose to the sun for 4 days, and obtain an empty pond;

[0045] 2) Pond environment construction: install hoses with multiple air outlets at the bottom and wall of the pool, the hoses are connected to the aerator, and oxygen is filled into the pond through the aerator and hoses to avoid suffocation of river crabs; then Put into the deep water of 0.7m in the pond, plant water hyacinth and Elodea after putting in quicklime disinfection in the ratio of 100kg per mu, its coverage area accounts for 45% of the pond area, and throw in slow-release nutrients (slow-release nutrients It i...

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Abstract

The invention proposes a method for ecologically breeding river crabs. The breeding method includes the following steps of (1) selection of a pond; (2) construction of a pond environment; (3) placingof young river crabs, wherein young river crabs are placed in the pond, an ecological floating bed is arranged on the water surface, desmodium heterocarpum(L.) DC. is planted on the ecological floating bed, and the area of the ecological floating bed accounts for 2 / 3 to 3 / 4 of the breeding area; (4) feeding and management, wherein in the process of breeding the river crabs, it is necessary to observe and adjust the breeding conditions frequently, in the first week, a pellet feed of egg yolk is fed 3 to 4 times a day and the daily feed amount is 100% to 120% of the amount of living river crabs,from the second week to the seventh week, an animal feed is fed 2 to 3 times a day and the daily feeding amount is 5% to 8% of the amount of living river crabs, and after that, a mixture of an animalfeed and a traditional Chinese medicine feed is fed 1 to 3 times a day and the daily feeding amount is 2% to 5% of the amount of living river crabs. The breeding method creates a favorable ecologicalenvironment conducive to the growth of the river crabs, promotes rapid growth of the river crabs, enhances anti-virus immunity of the river crabs, and improves the quality of the river crabs.

Description

technical field [0001] The invention belongs to the field of river crab cultivation, and in particular relates to a method for ecological cultivation of river crabs. Background technique [0002] Crabs, also known as river crabs, are freshwater crustaceans that grow up in fresh water. The meat of river crabs is delicious and nutritious. River crab has been generally recognized as a delicacy by Chinese and overseas people. In the production of river crabs, it has also realized the transformation from quantity speed type to quality benefit type, from "big crab farming" to "big crab farming", especially paying more attention to ecology, safety, environmental protection, health, and pollution-free The cultivation of aquatic products has higher and higher requirements on the quality of aquatic products. [0003] For now, the simple pursuit of the high-density, high-yield small-scale commercial crabs in the past no longer has a competitive advantage and does not meet market dema...

Claims

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Application Information

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IPC IPC(8): A01K61/59
CPCA01K61/59Y02A40/81
Inventor 黄典亮
Owner HEFEI KANGQINGYUAN BREEDING CO LTD
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