CN101904307A - Method for culturing mud crab seedlings - Google Patents
Method for culturing mud crab seedlings Download PDFInfo
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- CN101904307A CN101904307A CN2009100526745A CN200910052674A CN101904307A CN 101904307 A CN101904307 A CN 101904307A CN 2009100526745 A CN2009100526745 A CN 2009100526745A CN 200910052674 A CN200910052674 A CN 200910052674A CN 101904307 A CN101904307 A CN 101904307A
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- mud crab
- chlorella powder
- culturing
- crab seedlings
- feeds
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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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- Feed For Specific Animals (AREA)
- Farming Of Fish And Shellfish (AREA)
- Fodder In General (AREA)
Abstract
The invention relates to a method for culturing mud crab seedlings, and relates to the technology of breeding of seawater crabs. The technical problem to be solved is to provide a method for culturing the mud crab seedlings by replacing seawater microalgae in a nutrition enhancement mode. The method adopts the technical scheme that artificial combined fish bait prepared from prawn slices and fresh water chlorella powder and a nutrition enhancer for fish fries are adopted, and is characterized in that every morning, the artificial combined fish bait which is prepared from the prawn slices and the fresh water chlorella powder and is filtered with a 300-mesh screen is fed in a seedling pond directly, wherein a weight ratio of the fresh water chlorella powder to the prawn slices is 3:1; the nutrition enhancer for the fish fries is fed at afternoon; and live bacteria for improving water quality are added into the seedling pond every day. The method is used for culturing the mud crab seedlings by replacing the seawater microalgae with artificial combined materials.
Description
Technical field
The present invention relates to sea crabs class raising technology.
Background technology
The mud crab seed cultivation comprises zoea～megalops larva, megalops larva～young crab, young crab～young crab three phases.Wherein, zoea～megalops larva stage generally cultivates in indoor cement pit, and young crab～young crab stage cultivates in the native pond of culture zone.Wheel animalcule and artemia nauplii be respectively after 1～2 phase of mud crab flea shape and 3 phases each phase the young main biological feed, have individual size to fit, the speed of moving about is preyed on by juvenile crab and advantage such as convenient sources slowly, easily.Correlative study and actual production result show: the Tu Chi that uses in the mud crab seedling production at present cultivates wheel animalcule and exists shortcoming seawater seedling early growth in various degree by the artemia nauplii that the hatching of halogen worm resting egg obtains and grows necessary 20 carbon 5 alkene acid (EPA, 20:5n3) with 22 carbon acid (DHA, 22.6n3) problem of equal altitudes unsaturated fatty acid, must after carrying out fortification more than 6 hours, the seawater microalgae just can throw something and feed; And use the high seawater fry of DHA content wheel animalcule, artemia nauplii to be carried out fortification separately with nutrition fortifier, the situation of the unsuccessful death of shell then can appear when metamorphosis is for megalops larva in 5 phases of mud crab flea shape.Therefore, it is integral that the food chain of being made up of algae, wheel animalcule, artemia nauplii is considered to the mud crab seedlings cultivation.
The mud crab seedling production high temperature season about 30 ℃ is usually carried out, algae shortening exponential phase of growth, algae culture is extremely unstable, and difficult quality guarantee, in a single day the algae liquid that is in growth decline phase or death phase enter the surge of bringing out kinds of pathogenic vibrio quantity in the seedling pond behind the seedling pond easily, and failure causes growing seedlings.Selection can substitute fortification material and the corresponding fortification technology of little algae, and the stability that improves the large-scale production of mud crab seedling is had crucial meaning.
Summary of the invention
The problem that the present invention need solve provides the little algae of a kind of alternative seawater wheel animalcule, artemia nauplii is carried out fortification, cultivates the method for mud crab seedlings.
Technical scheme of the present invention adopts prawn slice and limnetic chlorella powder artificial combination bait and fry to use nutrition fortifier, it is characterized in that prawn slice and limnetic chlorella powder artificial combination bait that every morning directly throws something and feeds and filters through 300 eye mesh screens in the seedling pond, the weight ratio of limnetic chlorella powder and prawn slice is 3: 1, the fry of throwing something and feeding afternoon is used nutrition fortifier, and add 10ml/m at Miao Chizhong every day
3The water quality improvement viable bacteria.
Outstanding feature of the present invention is with the little algae of artificial combination material substitution seawater that prawn slice and limnetic chlorella powder are formed in proportion wheel animalcule, artemia nauplii to be carried out fortification.Two kinds of materials all are the common used materials during prawn seed-rearing is produced, has convenient sources, constant product quality, and contain the basic nutrition compositions such as n-3 series highly unsaturated fatty acid that the mud crab young grows required, protein, fat content are reasonable, and aminoacid ingredient is comprehensive, the little and good dispersion to water environmental impact, easily ingested, possess the advantage that to be ingested and to digest and assimilate by wheel animalcule, halogen worm by wheel animalcule, halogen worm.Nutrition fortifier then is main component with fish oil, is widely used in the seawater fish seed produces, and contains abundant EPA and DHA.Every day is an amount of interpolation water quality improvement function viable bacteria in the seedling pond, and the micro-ecological environment that makes juvenile crab cultivate the pond remains on controllable state.
Embodiment
The wheel animalcule fortification material that the present invention selects for use is prawn slice, limnetic chlorella powder and is the nutrition fortifier of main component with fish oil, the fortification material of in the seedling pond, directly throwing something and feeding every day, and 0.5 gram/m throws something and feeds the morning
3Through the artificial combination bait of being prepared in proportion by limnetic chlorella powder and prawn slice that 300 eye mesh screens filter, the weight ratio of limnetic chlorella powder and prawn slice is 3: 1, and 0.5ml/m throws something and feeds afternoon
3Fry based on fish oil is used nutrition fortifier, and add 10ml/m at Miao Chizhong every day
3The water quality improvement viable bacteria, the water quality improvement viable bacteria is adopted actinomycetes, ferment bacterium.
The present invention carries out industrial experimentation in the mud crab nursery pond that two mouthfuls of specifications are 3m * 5m * 1.4m: the two ponds used mud crab flea shape 1 phase young is from same kind crab, and young breeding density is 80,000/M
3With wheel animalcule, artemia nauplii main biological feed as mud crab zoea breeding phase; Environmental conditions such as bait keeps density, change control measures such as waterside number, quantity of exchanged water and intensity of illumination, salinity, temperature are identical.The main difference in two ponds is fatty acid sources of supply.Wherein, the contrast pond with Nannochloropsis oculata as the fatty acid source of supply, every morning is pressed seedling water 40 * 10
4Cell/ml concentration is replenished algae liquid to the seedling pond; Test tank does not add algae fully between whole nursery stage, as the fatty acid source of supply, every morning is to the seedling water 0.5 gram/m that throws something and feeds with artificial combination bait and commercially available nutrition fortifier
3Artificial combination bait, 0.5ml/m throws something and feeds afternoon
3Commercially available nutrition fortifier; Test tank adds 10ml/m every day
3The water quality improvement viable bacteria.Result of the test shows: the cultivation overall process is used the megalops larva survival rate in artificial fortification testing of materials pond and is used the contrast pond of Nannochloropsis oculata to improve 10.1% than the overall process of growing seedlings; Test tank NO
2-N and NH
4-N detects mean value and compares respectively according to pond low 36.7% and 14%; Total bacteria count detection mean value is higher than the contrast pond in the test tank water body, and amount of vibrio two ponds do not have marked difference.The anti-hunger test result that the young crab of cultivating with different n-3HUFA sources of supply of 1 phase of mud crab (C1) is carried out shows: the anti-hungry ability that adopts combined bait/hardening agent to cultivate juvenile crab as the n-3HUFA source of supply be better than the throwing something and feeding control group of algae, both significant differences.
Claims (2)
1. method of cultivating mud crab seedlings, employing is used nutrition fortifier by prawn slice and limnetic chlorella powder artificial combination bait and fry, it is characterized in that prawn slice and limnetic chlorella powder artificial combination bait that every morning directly throws something and feeds and filters through 300 eye mesh screens in the seedling pond, the weight ratio of limnetic chlorella powder and prawn slice is 3: 1, throw something and feed afternoon and use nutrition fortifier based on the fry of fish oil, add 10ml/m at Miao Chizhong every day
3The water quality improvement viable bacteria.
2. a kind of method of cultivating mud crab seedlings according to claim 1 is characterized in that the every morning 0.5 gram/m that throws something and feeds
3Artificial combination bait, 0.5ml/m throws something and feeds afternoon
3Nutrition fortifier; The 10ml/m that Miao Chizhong adds every day
3The water quality improvement viable bacteria is adopted actinomycetes, ferment bacterium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100526745A CN101904307B (en) | 2009-06-08 | 2009-06-08 | Method for culturing mud crab seedlings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100526745A CN101904307B (en) | 2009-06-08 | 2009-06-08 | Method for culturing mud crab seedlings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101904307A true CN101904307A (en) | 2010-12-08 |
| CN101904307B CN101904307B (en) | 2011-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100526745A Expired - Fee Related CN101904307B (en) | 2009-06-08 | 2009-06-08 | Method for culturing mud crab seedlings |
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| CN (1) | CN101904307B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550456A (en) * | 2012-01-16 | 2012-07-11 | 顾宏兵 | Method for raising first instar crab fingerlings |
| CN104255585A (en) * | 2014-07-21 | 2015-01-07 | 安徽绿源渔业科技有限公司 | Method for putting juvenile Chinese mitten crabs into pond after three times of dampening |
| CN106135141A (en) * | 2016-08-01 | 2016-11-23 | 中国科学院海洋研究所 | The method improving aquatic long fertility and strengthening food nutrition performance |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100591204C (en) * | 2007-04-13 | 2010-02-24 | 厦门大学 | Larval crab cultivating pond and the cultivating method |
| CN101040607A (en) * | 2007-04-13 | 2007-09-26 | 厦门大学 | Desalted breeding method of larval crab |
| CN101112188B (en) * | 2007-08-31 | 2011-03-30 | 浙江省海洋水产养殖研究所 | Oogenesis technique for artificial culture of mud crab parent |
-
2009
- 2009-06-08 CN CN2009100526745A patent/CN101904307B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102550456A (en) * | 2012-01-16 | 2012-07-11 | 顾宏兵 | Method for raising first instar crab fingerlings |
| CN102550456B (en) * | 2012-01-16 | 2013-12-25 | 顾宏兵 | Method for raising first instar crab fingerlings |
| CN104255585A (en) * | 2014-07-21 | 2015-01-07 | 安徽绿源渔业科技有限公司 | Method for putting juvenile Chinese mitten crabs into pond after three times of dampening |
| CN106135141A (en) * | 2016-08-01 | 2016-11-23 | 中国科学院海洋研究所 | The method improving aquatic long fertility and strengthening food nutrition performance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101904307B (en) | 2011-09-28 |
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