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Method for cleansing shellfish lived and buried on tidal flat

A biological purification and shellfish technology, applied in the direction of climate change adaptation, fish farming, application, etc., can solve problems such as difficulty in meeting sanitation and cleanliness requirements, impact on product quality and taste, lack of purification and sand discharge methods, etc., to achieve The effects of good market prospects, ensuring hygiene and food safety, expanding sales and export volume

Inactive Publication Date: 2006-06-28
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-term temporary breeding in this environment will reduce the plumpness of shellfish, increase the mortality rate, and affect the quality and taste of the product.
The long-term lack of effective sand-purifying methods has made it difficult for clams and other shellfish with a lot of sand in their intestines to meet the requirements of hygiene and cleanliness, which limits their sales and exports. The price of delicious shellfish has always been low. End wandering
The production and processing units of tidal flat shellfish have also used substitutes such as soybean milk to try to drain the sediment in the digestive tract of the shellfish, because this kind of substitute bait is not suitable for the natural feeding needs of the shellfish, and at the same time has a negative effect on the water quality of the temporary water body. Caused a lot of impact, never achieved good results

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Phaeodactyum tricormtum purifies the clam by spit sand:

[0018] Area 15m 2 Temporarily raise the purification pond, the water depth is 70cm, and handle 500kg of four-cornered clams. Phaeodactylum tricornutum was fed to the purification pool once every 2 hours, and the amount of each feeding was 30,000 cells / ml of water. After 10 hours, all the sediment in the clam body was discharged, and the total amount of microalgae fed during the purification period was 120,000 cells / ml of water.

[0019] The experimental conditions are: water temperature: 18°C, salinity: 32, pH value: 7.8, during the experiment period, the water body is continuously filled with air, and 1 / 3 of the water in the holding pool is changed every 2 hours.

[0020] Purification effect: the shellfish has good plumpness, the survival rate is 98%, the product quality and taste are good, and the sediment in the clam body has been thoroughly purified.

Embodiment 2

[0022] Isochrysis galbana + Platymonas subcordiformis to purify clams:

[0023] Area 15m 2 Temporarily raise the purification pond with a water depth of 70cm and process 350kg of Meretrix meretrix. The purification pool is fed with golden algae + flat algae mixture, once every 2.5 hours. Each feeding amount is 20,000 cells / ml water body of golden algae + 4,000 cells / ml water body of flat algae. After 6 hours, the sediment in the clam was discharged, and the total amount of microalgae fed during the purification period was 72000 cells / mg water body.

[0024] The experimental conditions are: water temperature: 20°C, salinity: 25, pH value: 7.6, during the experiment period, the water body is continuously filled with air, and 1 / 3 of the water in the holding pool is changed every 2.5 hours.

[0025] Purification effect: the shellfish has good plumpness, the survival rate is 97%, the quality and taste of the product are good, and the sediment in the body of Meretrix meretrix has...

Embodiment 3

[0027] Phaeodactyum tricormtum + Chlorella spp to purify Philippine clam sand spit:

[0028] Area 15m 2 Temporarily raise the purification pond, the water depth is 70cm, and handle 450kg of Philippine clams. The purification pool was fed with a mixture of Phaeodactylum tricornutum + Nannochloropsis once every 3 hours. Each feeding amount is Phaeodactylum tricornutum 15000 cells / ml water body + Nannochloropsis 20000 cells / ml water body. After 8 hours, all the sediment in the clams was discharged, and the total amount of microalgae fed during the purification period was 105,000 cells / mg water body.

[0029] The experimental conditions are: water temperature: 22°C, salinity: 28, pH value: 8.3, during the experiment period, the water body is continuously filled with air, and 1 / 2 of the water in the holding pool is changed every 3 hours.

[0030] Purification effect: the shellfish has good plumpness, the survival rate is 96%, the quality and taste of the product are good, and th...

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PUM

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Abstract

A method for cleaning the shellfish living in beach features that the living microalgae are proportionally added to the seawater in which said shellfish is temporarily cultured for inducing the shellfish to release the silt from their body at 10-28 deg.C for 4-24 hrs.

Description

technical field [0001] The invention relates to a purification and sand discharge treatment technology for tidal flat buried bivalve molluscs before sale and processing, in particular to a method for purifying tidal flat buried bivalve molluscs based on a biological method. Background technique [0002] my country is a big country in mariculture, and shellfish aquaculture occupies a dominant position in the entire mariculture industry. Among them, tidal flat shellfish production accounts for about 20% of my country's total mariculture production. my country's existing shallow tidal flat area is about 200 million mu, and its utilization rate is currently less than 20%. There is a lot of room for development of tidal flat shellfish breeding. The tidal flat buried shellfish such as four-cornered clam, Philippine clam and Meretrix meretrix have important economic value, and the amount of natural resources and aquaculture output are very considerable. The above-mentioned shellfi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 刘保忠张涛杨红生朱丰喜相建海
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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