CN101088324A - Method of temporarily keeping river crab for sale - Google Patents
Method of temporarily keeping river crab for sale Download PDFInfo
- Publication number
- CN101088324A CN101088324A CNA2006100447909A CN200610044790A CN101088324A CN 101088324 A CN101088324 A CN 101088324A CN A2006100447909 A CNA2006100447909 A CN A2006100447909A CN 200610044790 A CN200610044790 A CN 200610044790A CN 101088324 A CN101088324 A CN 101088324A
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- temporarily
- crab
- river crab
- sale
- water
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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 method of temporarily keeping river crab for sale includes four parts, including selecting temporarily keeping pond, selecting river crab to be kept, determining temporarily keeping density and managing. It features the selection of temporarily keeping pond near water source with convenient water pouring and draining ports, area of 3-5 unit of area and water depth of 1.5-1.8 m; selecting robust river crab and sterilizing with 4 wt% concentration salt solution for 10-15 min; the temporarily keeping density of 2000-2500/mou or 200-250 kg/unit of area and temporarily keeping period of 1-3 months; and managing including laying bait of 3-5 wt% of crab weight once a day, changing water of 15-25 cm once every 5-7 days, spraying lime once every 20-30 days, spraying 0.5 ppm concentration trichloroiso cyanuric acid concentration to sterilize water regularly, and feeding terramycin and furazolidone mixed into feed for continuous 5 days every half one month.
Description
Technical field
The present invention relates to a kind of method of temporarily keeping river crab for sale.
Background technology
River crab is supported temporarily, is to carry out the short time after sexually matured river crab is fished for to bring up fertile for sale temporarily.But as miscarriage, easily cause large quantities of crab death of supporting temporarily in the foster temporarily process.Its reason has following several:
1, is physiological death.Behind the river crab gonad maturity, carry out breeding migration for producing offspring, in fresh water, support temporarily, can cause the physiological imbalance, osmotic pressure too high and dead (it is dead to expand) in the body as continuing.Therefore river crab is supported in the process temporarily, overripe yellow crab should be picked out.
2, river crab is of poor quality.It is diversified in specifications to support crab temporarily, varies, and supports the density height temporarily, and supporting in the crab temporarily of having is mixed with the infull crab of disease crab, limbs.This just causes easily to support in the process temporarily and cuts one another's throats, and the lethality height that specification is little also easily causes the river crab disease transmission, and the river crab of supporting is dead because of morbidity temporarily.
3, ecological condition is poor.Reasons such as the storage pond, holding pond area is little, and the pasture and water coverage rate is low, and water level is shallow excessively, and change of water quality is fast, and dissolved oxygen is low often make river crab frequently debark, and oxygen in the breathe air causes to consume one's strength manyly, and time one is long, and lethality can improve greatly.In addition, water quality fertilizer is supported the density height temporarily, also easily causes and supports crab death by suffocation temporarily.
4, daily ration, feeding quantity deficiency.During supporting temporarily, water temperature is more than 4 ℃, and river crab ingests still vigorous.As the daily ration, feeding quantity deficiency, add that the storage pond, holding pond natural bait is biological few.The one, can cause river crab to cut one another's throats for fighting for limited bait, motility rate is formed in influence temporarily; The 2nd, cause river crab to escape because of forage.
Summary of the invention
The present invention relates to a kind of method of temporarily keeping river crab for sale, the application of the invention is formed the purpose of motility rate temporarily to reach raising.The science that comprises is selected storage pond, holding pond, river crab quality requirement, is supported density, four parts of strengthening management temporarily.It is characterized in that: (1) science is selected storage pond, holding pond.Select near the water source, annotate draining Chi Kou easily, area 3-5 mu, depth of water 1.5-1.8 rice.(2) river crab quality requirement.Support crab temporarily and require the physique stalwartness, specification is even, crust, complete, anosis, the nothing wound of appendage, and single step of releasing foot.The river crab of choosing was embathed disinfection 10-15 minute with 4% saline solution.(3) support density temporarily.Every mu foster river crab 2000-2500 or 200-250kg, support the time temporarily: distant crab 1-2 month, Eriocheir sinensia 2-3 month.(4) strengthen management.During supporting temporarily, bait throwing in every day once, feeding volume be to support the 3-5% that crab is measured temporarily.Selected change water one time noon in every 5-7 days during supporting temporarily, change water 15-25cm at every turn, the every 20-30 days quicklime of splashing one time, during supporting temporarily, the 0.5ppm strong chlorine oil of regularly splashing sterilization water body, every first quarter moon is mixed bait and is thrown something and fed with terramycin, furazolidone, connects to feed 5 days.
Specific implementation method
1. be that science is selected storage pond, holding pond.Select near the water source, annotate draining Chi Kou easily, area 3-5 mu, depth of water 1.5-1.8 rice.Use quicklime 100kg for every mu before using, thoroughly clear pond.Water inlet after 5 days, even distribution pasture and water in the pond, coverage rate is more than 40%.
2. river crab quality requirement.Support crab temporarily and require the physique stalwartness, specification is even, crust, complete, anosis, the nothing wound of appendage, and single step of releasing foot.The river crab of choosing was embathed disinfection 10-15 minute with 4% saline solution.Put in a suitable place to breed in the process as soft crab, top shell crab, should pick out separately and support temporarily after the shell hardening, put into storage pond, holding pond again.
3. support density temporarily.General mu is supported river crab 2000-2500 or 200-250kg, supports the time temporarily: distant crab 1-2 month, and Eriocheir sinensia 2-3 month.
4. strengthen management.During supporting temporarily, bait throwing in every day once, feeding volume be to support the 3-5% that crab is measured temporarily.Bait should be fresh, can not rot, and wherein animal bait accounts for 60%, as spiral shell a species of small clam living in fresh water, the freshwater mussel meat of chopping, the silkworm chrysalis of small fish, crushing, and pluck etc., the vegetal bait of can throwing something and feeding has: soya bean, wheat, sweet potato, pumpkin etc.Selected change water one time noon in every 5-7 days during supporting temporarily, change water 15-25cm at every turn, the every 20-30 days quicklime of splashing one time, it is calcareous to increase pond water, will drag for every day except that residual bait, foreign material, dead crab etc. in the pond, keeps pond mouth sanitation and hygiene.During supporting temporarily, the 0.5ppm strong chlorine oil of regularly splashing sterilization water body, every first quarter moon is mixed bait and is thrown something and fed with terramycin, furazolidone, connects to feed 5 days prevention crab disease.If find harmful animals such as water rat, water snake, frog, must catch and kill immediately during supporting temporarily.
Claims (9)
1. the method for a temporarily keeping river crab for sale, the science that comprises are selected storage pond, holding pond, river crab quality requirement, are supported density, four parts of strengthening management temporarily.It is characterized in that: (1) science is selected storage pond, holding pond.Select near the water source, annotate draining Chi Kou easily, area 3-5 mu, depth of water 1.5-1.8 rice.(2) river crab quality requirement.Support crab temporarily and require the physique stalwartness, specification is even, crust, complete, anosis, the nothing wound of appendage, and single step of releasing foot.The river crab of choosing was embathed disinfection 10-15 minute with 4% saline solution.(3) support density temporarily.Every mu foster river crab 2000-2500 or 200-250kg, support the time temporarily: distant crab 1-2 month, Eriocheir sinensia 2-3 month.(4) strengthen management.During supporting temporarily, bait throwing in every day once, feeding volume be to support the 3-5% that crab is measured temporarily; Selected change water one time noon in every 5-7 days during supporting temporarily, change water 15-25cm at every turn; The quicklime of splashing one time in every 20-30 days; During supporting temporarily, the 0.5ppm strong chlorine oil of regularly splashing sterilization water body; Every first quarter moon is mixed bait and is thrown something and fed with terramycin, furazolidone, connects to feed 5 days.
2. the method for the described temporarily keeping river crab for sale of claim 1 is characterized in that selecting near the water source, annotates draining Chi Kou easily, area 3-5 mu, depth of water 1.5-1.8 rice.
3. the method for the described temporarily keeping river crab for sale of claim 1 is characterized in that supporting crab temporarily requires the physique stalwartness, and specification is even, crust, complete, anosis, the nothing wound of appendage, and single step of releasing foot.The river crab of choosing was embathed disinfection 10-15 minute with 4% saline solution.
4. the method for the described temporarily keeping river crab for sale of claim 1 is characterized in that foster temporarily density is every mu of foster river crab 2000-2500 or 200-250kg, and supporting the time temporarily is distant crab 1-2 month, Eriocheir sinensia 2-3 month.
5. the method for the described temporarily keeping river crab for sale of claim 1, during it is characterized in that supporting temporarily, bait throwing in every day once, feeding volume be to support the 3-5% that crab is measured temporarily.
6. the method for the described temporarily keeping river crab for sale of claim 1 selected change water one time noon in every 5-7 days during it is characterized in that supporting temporarily, changed water 15-25cm at every turn.
7. the method for the described temporarily keeping river crab for sale of claim 1, every 20-30 days quicklime of splashing one time during it is characterized in that supporting temporarily.
8. the method for the described temporarily keeping river crab for sale of claim 1, the 0.5ppm strong chlorine oil sterilization water body of regularly splashing during it is characterized in that supporting temporarily.
9. the method for the described temporarily keeping river crab for sale of claim 1, every first quarter moon is mixed bait and is thrown something and fed with terramycin, furazolidone during it is characterized in that supporting temporarily, connect hello 5 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100447909A CN101088324A (en) | 2006-06-16 | 2006-06-16 | Method of temporarily keeping river crab for sale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100447909A CN101088324A (en) | 2006-06-16 | 2006-06-16 | Method of temporarily keeping river crab for sale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101088324A true CN101088324A (en) | 2007-12-19 |
Family
ID=38941961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100447909A Pending CN101088324A (en) | 2006-06-16 | 2006-06-16 | Method of temporarily keeping river crab for sale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101088324A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239819A (en) * | 2011-05-04 | 2011-11-16 | 苏州市相城区新时代特种水产养殖场 | Method for temporarily cultivating river crabs |
| CN103444598A (en) * | 2012-11-16 | 2013-12-18 | 王连成 | Sea-caught swimming crab fattening method |
| CN114831062A (en) * | 2022-05-31 | 2022-08-02 | 江苏省农业科学院宿迁农科所 | Method for reducing disease rate of commercial crab temporarily breeding in winter |
-
2006
- 2006-06-16 CN CNA2006100447909A patent/CN101088324A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239819A (en) * | 2011-05-04 | 2011-11-16 | 苏州市相城区新时代特种水产养殖场 | Method for temporarily cultivating river crabs |
| CN102239819B (en) * | 2011-05-04 | 2013-05-08 | 苏州市相城区新时代特种水产养殖场 | Method for temporarily cultivating river crabs |
| CN103444598A (en) * | 2012-11-16 | 2013-12-18 | 王连成 | Sea-caught swimming crab fattening method |
| CN103444598B (en) * | 2012-11-16 | 2015-12-09 | 王连成 | The method that swimming crab is fattened is caught in a kind of sea |
| CN114831062A (en) * | 2022-05-31 | 2022-08-02 | 江苏省农业科学院宿迁农科所 | Method for reducing disease rate of commercial crab temporarily breeding in winter |
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