CN103250660B - Method for breeding red green crabs in pond - Google Patents
Method for breeding red green crabs in pond Download PDFInfo
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- CN103250660B CN103250660B CN201310140074.0A CN201310140074A CN103250660B CN 103250660 B CN103250660 B CN 103250660B CN 201310140074 A CN201310140074 A CN 201310140074A CN 103250660 B CN103250660 B CN 103250660B
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- pond
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- astaxanthin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The invention discloses a method for breeding red green crabs in a pond. On-line monitoring of pond water dissolved oxygen amount is started in 30-60 days before the red green crabs come into the market, a critical value is set, and when the pond water dissolved oxygen amount is lower than the critical value, an aerator is started to ensure that the pond water resolved oxygen amount is higher than the critical value. The critical value is 3.5mg/L to 4.5mg/L. Food containing astaxanthin is fed to the red green crabs in 30-60 days before the red green crabs come into the market, and each crab is made to intake more than 11.5g of astaxanthin. By means of the method, sufficient dissolved oxygen in the crab pond can be guaranteed, negative effects on astaxanthin deposition from changes of environmental factors are weakened, the organoleptic quality and the taste of the crabs in ponds can be improved, and therefore economical benefits of breeding crabs in the pond are increased. The method is simple in operation, easy to implement and low in cost.
Description
Technical field
The invention belongs to technical field of aquaculture, be specifically related to the cultural method of the red cream crab in a kind of pond.
Background technology
River crab, formal name used at school Eriocheir sinensia, be the traditional fresh water aquatic products good merchantable brand of China, improving constantly in recent years along with living standards of the people, to river crab, the continuous expansion of the particularly consumption demand of red cream crab, current culture of Chinese mitten crab output is more than 59.3 ten thousand tons.
The lake depth of water is suitable for, pasture and water riotous growth, superior natural conditions, be always river crab good fatten place and breeding spot, but owing to lacking planning and control measures many lakes net, to enclose area excessive, destroying lake resource seriously causes resource to fall sharply, and adds artificially extremely to catch to drag for excessively, have impact on lake culture environment.In order to the needs that sustainable development and lake ecological are administered, lake purse seine crab farming area just constantly reduces.At present, the river crab of pond culture can compare favourably with the river crab of lake culture in specification, output, have even large than the river crab specification of Cultured In The Lake Pen, output is high.
But due to pond ecological environmental limit, the red cream crab of imitative natural, ecological technology cultivation is still inferior to the red cream crab of Cultured In The Lake Pen in organoleptic quality, red cream crab cream (hepatopancrease) color being mainly manifested in pond culture is bright-coloured not, boil rear crab shell color also relatively dim, be not as so red as lake river crab; Mouthfeel aspect is also so fresh, sweet not as the red cream crab of lake culture, and the red cream crab market price is determined by its quality and specification, and meanwhile, along with growth in the living standard, the demand of people to high-quality red cream crab is increasing.
Therefore a kind of new cultural method is found necessary to the industry development improving pond crab farming with the organoleptic quality effectively improving pond culture red cream crab.
Summary of the invention
The object of this invention is to provide the cultural method of the red cream crab in a kind of pond, to improve the quality of the red cream crab of pond culture, improve culture benefit.
To achieve the above object of the invention, the technical solution used in the present invention is:
A cultural method for the red cream crab in pond, in first 30 ~ 60 days of red cream crab listing, starts the water-soluble oxygen amount in on-line monitoring pond, sets a critical value, when the water-soluble oxygen amount in pond starts aerator lower than during this critical value, guarantee that the water-soluble oxygen amount in pond is more than this critical value; Described critical value is 3.5mg/L ~ 4.5mg/L;
In first 30 ~ 60 days of red cream crab listing, start the food of feeding containing astaxanthin, make every only one-tenth crab take in astaxanthin more than 11.5 grams.
In technique scheme, described critical value is preferably 4.0mg/L.
In technique scheme, described astaxanthin derives from the spiral shell after the strengthening of spirulina, haematococcus pluvialis or astaxanthin, freshwater mussel; The method of described astaxanthin strengthening spiral shell and freshwater mussel to be supported in the water body being rich in micro-algae more than 4 days; This water body being rich in micro-algae is haematococcus pluvialis algae liquid, spirulina algae liquid or the cultivation tail water being vaccinated with photosynthetic bacteria, useful micro-algae.
Operation principle of the present invention is: under pond condition, and due to the plantation of a large amount of pasture and water, river crab growing environment amplitude of variation is very large, such as dissolved oxygen about 2 Ke Da 18mg/L in the afternoon, in the morning about 8 time dissolved oxygen only have 2mg/L.This violent day-night change of envirment factor makes river crab be in stress situation, produces a large amount of free radicals, and the existence of a large amount of free radical has a significant impact taste compound metabolism.In addition, carotenoid, as a kind of antioxidant, can be used to scavenging free radicals and consume, and river crab self can not synthesize carotenoids, and rely on and obtain from food, rich the owing of carotenoid has a strong impact on river crab hepatopancrease and body colour.If but only supplemented with exogenous carotenoid and do not eliminate the impact of envirment factor, the hyperchromic effect of supplemented with exogenous carotenoid will be not obvious or unstable.By determining the dose-effect relationship between dissolved oxygen and the hyperchromic effect of carotenoid, dropping into outer source carotenoid simultaneously, improving dissolved oxygen, can reduce and lose flavor substance, thus river crab liver pancreas and body colour and local flavor are produced actively affect, produce so-called red cream crab.
Because technique scheme is used, the present invention compared with prior art has following advantages:
1. cultural method of the present invention can keep the dissolved oxygen of crab pond abundance, the negative effect that the change having slackened envirment factor deposits carotenoid, improve the color of river crab liver pancreas, sexual gland and crust, improve the organoleptic quality of river crab, taste flavor, thus improve the economic benefit of pond crab farming.
2. cultural method of the present invention is simple to operate, easy to implement, and cost is lower.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Embodiment one
A cultural method for the red cream crab in pond, the river crab pond under normal condition, passes through on-line monitoring pond dissolved oxygen in first 30 days in listing, opens oxygen increasing pump at dissolved oxygen lower than during 4mg/L.Throwing something and feeding in transparency is the spiral shell strengthened in the spirulina liquid of 15cm 4 days, and spiral shell feeding volume depending on carotenoid contained in its body, but need ensure that every river crab takes in more than 11.5 grams astaxanthins.Within this period of time, other feedstuff feeding amount suitably reduces.Through the raising of 30 days, during listing, river crab organoleptic quality and Yangcheng Lake high-quality river crab were without significant difference.
Embodiment two
A cultural method for the red cream crab in pond, passes through on-line monitoring pond dissolved oxygen in first 60 days in listing, opens oxygen increasing pump at dissolved oxygen lower than during 3.5mg/L.To throw something and feed strengthening spiral shell; Addition is to ensure that each river crab is taken in more than 11.5 grams astaxanthins and is as the criterion.Within this period of time, other feedstuff feeding amount suitably reduces.Through the raising of 60 days, during listing, river crab organoleptic quality and Yangcheng Lake high-quality river crab were without significant difference.
The intensifying method of spiral shell is: in cultivation tail water, inoculate haematococcus pluvialis and photosynthetic bacteria, the inoculum concentration first day is 1L/667m
3water body; Reseed according to transparency and water colour later, make transparency at below 30cm; Spiral shell strengthening 7 after fish for use.
Embodiment three
A cultural method for the red cream crab in pond, passes through on-line monitoring pond dissolved oxygen in first 45 days in listing, opens oxygen increasing pump at dissolved oxygen lower than during 4.5mg/L.Throw something and feed containing the high-quality mixed feed of 3% spirulina; Addition is to ensure that each river crab is taken in more than 11.5 grams astaxanthins and is as the criterion.Through the raising of 45 days, during listing, river crab organoleptic quality and Yangcheng Lake high-quality river crab were without significant difference.
Embodiment four
A cultural method for the red cream crab in pond, passes through on-line monitoring pond dissolved oxygen in first 30 days in listing, opens oxygen increasing pump at dissolved oxygen lower than during 4.0mg/L.Throw something and feed containing the high-quality mixed feed of 0.6% haematococcus pluvialis; Addition is to ensure that each river crab is taken in more than 11.5 grams astaxanthins and is as the criterion.Through the raising of 30 days, during listing, river crab organoleptic quality and Yangcheng Lake high-quality river crab were without significant difference.
Claims (1)
1. a cultural method for the red cream crab in pond, is characterized in that:
In first 30 ~ 60 days of red cream crab listing, start the water-soluble oxygen amount in on-line monitoring pond, set a critical value, when the water-soluble oxygen amount in pond starts aerator lower than during this critical value, make the water-soluble oxygen amount in pond remain on more than this critical value; Described critical value is 4.0mg/L;
In first 30 ~ 60 days of red cream crab listing, start the food of feeding containing astaxanthin, make every only one-tenth crab take in astaxanthin more than 11.5 grams;
Described astaxanthin derives from the spiral shell after the strengthening of spirulina, haematococcus pluvialis or astaxanthin, freshwater mussel;
The method of astaxanthin strengthening spiral shell, freshwater mussel spiral shell, freshwater mussel to be supported in the water body being rich in micro-algae more than 4 days;
The described water body being rich in micro-algae is haematococcus pluvialis algae liquid, spirulina algae liquid or the cultivation tail water being vaccinated with photosynthetic bacteria, useful micro-algae.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140074.0A CN103250660B (en) | 2013-04-22 | 2013-04-22 | Method for breeding red green crabs in pond |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310140074.0A CN103250660B (en) | 2013-04-22 | 2013-04-22 | Method for breeding red green crabs in pond |
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| Publication Number | Publication Date |
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| CN103250660A CN103250660A (en) | 2013-08-21 |
| CN103250660B true CN103250660B (en) | 2015-03-11 |
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| CN201310140074.0A Expired - Fee Related CN103250660B (en) | 2013-04-22 | 2013-04-22 | Method for breeding red green crabs in pond |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104082214B (en) * | 2014-07-16 | 2016-05-11 | 宁德市富发水产有限公司 | A kind of method that can promote large yellow croaker body surface its colour changed into yellow |
| CN108967743A (en) * | 2018-07-13 | 2018-12-11 | 江苏省海洋水产研究所 | It is a kind of for improving the composite preparation and its preparation method and application of content astaxanthin in white leg Shrimp body |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1568677A (en) * | 2004-05-11 | 2005-01-26 | 潘洪强 | Nuisance free big sized river crab ecological cultivation method |
| CN101411410A (en) * | 2008-12-01 | 2009-04-22 | 南京帅丰饲料有限公司 | Feedstuff additive for fattening river crab with red oil |
| CN101584304A (en) * | 2009-05-16 | 2009-11-25 | 潘洪强 | Method for ecologically culturing high-quality red testis river crabs |
| CN101796930A (en) * | 2010-01-29 | 2010-08-11 | 上海海洋大学 | Method for promoting portunus trituberculatus females to quickly develop roe |
| CN101810147A (en) * | 2009-07-15 | 2010-08-25 | 嵊泗县复兴水产有限责任公司 | Method for fattening portunids |
| CN102450518A (en) * | 2010-12-07 | 2012-05-16 | 山东六和集团有限公司 | Compound feed for red cream crabs and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000217517A (en) * | 1999-02-01 | 2000-08-08 | Takashi Okamoto | Red crab egg |
| JP2009060852A (en) * | 2007-09-06 | 2009-03-26 | Toyo Ink Mfg Co Ltd | Feed for marine animal resources, and method of feeding fishery resource animals using the same |
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2013
- 2013-04-22 CN CN201310140074.0A patent/CN103250660B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1568677A (en) * | 2004-05-11 | 2005-01-26 | 潘洪强 | Nuisance free big sized river crab ecological cultivation method |
| CN101411410A (en) * | 2008-12-01 | 2009-04-22 | 南京帅丰饲料有限公司 | Feedstuff additive for fattening river crab with red oil |
| CN101584304A (en) * | 2009-05-16 | 2009-11-25 | 潘洪强 | Method for ecologically culturing high-quality red testis river crabs |
| CN101810147A (en) * | 2009-07-15 | 2010-08-25 | 嵊泗县复兴水产有限责任公司 | Method for fattening portunids |
| CN101796930A (en) * | 2010-01-29 | 2010-08-11 | 上海海洋大学 | Method for promoting portunus trituberculatus females to quickly develop roe |
| CN102450518A (en) * | 2010-12-07 | 2012-05-16 | 山东六和集团有限公司 | Compound feed for red cream crabs and preparation method thereof |
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