CN104381164B - Indoor domestication method for Japanese eel fries - Google Patents
Indoor domestication method for Japanese eel fries Download PDFInfo
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- CN104381164B CN104381164B CN201410598180.8A CN201410598180A CN104381164B CN 104381164 B CN104381164 B CN 104381164B CN 201410598180 A CN201410598180 A CN 201410598180A CN 104381164 B CN104381164 B CN 104381164B
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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 relates to an indoor domestication method for Japanese eel fries. The method comprises the following steps of completely shifting captured glass eels into fresh water for aquaculture by a method of gradually changing fresh water; directly feeding eel fries by taking frozen minced artificial formulated feed as initial feed, and taking an elaborated artificial feeding and management method as assistance; when the glass eels are changed into black fry eels, feeding with powdery artificial formulated feed, matching the weight of the feed and water according to a ratio, controlling the feeding quantity, regularly sucking dirt and changing water each day, and timely feeding individuals in different specifications in different ponds. The method is simple in process and low in cost, effectively overcomes the defect of adopting tubificidae as initial feed, ensures that the survival rate of the eel fries is over 99 percent int the domestication process, and has a good application prospect.
Description
Technical field
The invention belongs to Japanese eel field, relate to a kind of Japanese eel seed indoor domesticating method
Background technology
China is an aquaculture big country, and Japanese eel, as a kind of excellent aquaculture object, is that China's export is earned foreign exchange
One of govern-house-variety.But the artificial propagation techniques difficulty of its seed is not the most captured, up to the present, still the most completely
The natural seeding, wild fry relied in estuary region collection migration way supports huge anguilla japonica aquaculture.Eel Seedling arrives Changjiang River Estuary
Behind territory, metamorphosis is translucent cylindrical germling, claims glass eel or white young eel, and glass eel traces back through river mouth, melanin occurs,
Back blackening is referred to as HEIZI eel.In artificial cultivation, the cultivation during the metamorphosis of eel Seedling is extremely important with management, and glass eel is opened
Mouth stage of ingesting directly affects critical period of its survival rate especially.In traditional glass eel cultivating process, all use Limnodrilus hoffmeisteri
(being commonly called as blood worm) opening, but this open-mouthed bait has the disadvantages that (1) carries the micro-life of the cause of diseases such as a large amount of bacterial viruses
Thing, easily makes eel Seedling catch；(2) residual bait not easily collecting, waste is relatively big, pollutes breeding water body；(3) it is black in metamorphosis
Being necessarily drawn to gradually reduce the amount of Limnodrilus hoffmeisteri in tame and docile food after young eel, increase the amount of man-made feeds, process is relatively complicated, and
And be easy to during being transitioned into mash feed by Limnodrilus hoffmeisteri occur turning expect difficult and affect growth.
Summary of the invention
The present invention provides a kind of Japanese eel seed indoor domesticating method, and the method technique is simple, low cost, efficiently against
The shortcoming using Limnodrilus hoffmeisteri opening, eel Seedling survival rate during raising and train, to more than 99%, has a good application prospect.
A kind of Japanese eel seed indoor domesticating method of the present invention, including:
(1) glass eel is supported temporarily in glass jar, reduce the salinity of breeding water body and heat up simultaneously, during salt reduction and intensification
Not throwing something and feeding bait, after completing, every day starts the rotten shape starter diet of frost of throwing something and feeding, and morning and afternoon, the most initial daily ration of feeding was fish
The 5～6% of body weight, hereafter by the sky daily ration, feeding quantity that progressively increases to the 15～16% of fish body weight, after throwing something and feeding, 10-20min uses siphonage to receive
The remaining bait of collection；During cultivation, changing water every morning once, quantity of exchanged water is the 1/3 of water body；
(2) after glass eel metamorphosis becomes HEIZI eel, changing mash feed of throwing something and feeding every day into, morning and afternoon, the most once feeding volume was fish
The 7～8% of body weight；Every morning, soil pick-up changed water, and quantity of exchanged water is the 1/5 of water body；After HEIZI eel metamorphosis is silver color eel, continue
Throw something and feed mash feed, throw something and feed identical with HEIZI eel with soil pick-up water changing method.
In described step (1), tile and veil are placed in the bottom of glass jar.
Oxygen increasing pump oxygenation when supporting temporarily in described step (1), keeps water body more than dissolved oxygen 6.0mg/L.
Described step (1) reduces the method for salinity particularly as follows: drain every day 1/5 sea water, be simultaneously introduced the fresh water of 1/5.
The method heated up in described step (1) is particularly as follows: heating rate is 2 DEG C/d, and after 6-8 days, water temperature rises to 25 DEG C,
Keep 25 DEG C of water temperatures constant.
Described step (2) is thrown something and fed before mash feed first by mash feed and water according to weight ratio 1:1.8 mixing and stirring,
It is cut into elongated shape with the little spoon of metal to throw something and feed.
Observing the growing state of eel Seedling in step (1) and (2) breeding process, the seed big to individual variation and time-division pond are raised
Support.
Glass eel after capture first is proceeded to completely, in fresh water after cultivation, use ice by the present invention according to the method progressively changing fresh water
Freeze rotten shape artifical compound feed directly to throw something and feed as open-mouthed bait eel Seedling, be aided with fine artificial feeding and management method, work as glass
After glass eel metamorphosis is HEIZI eel, uses powdered artificial's mixed feed instead and throw something and feed, according to ratio brew and the weight of water, control
Feeding volume, timing every day soil pick-up and change water, individuality diversified in specifications and time-division pond are raised.
Beneficial effect
Present invention process is simple, low cost, effectively overcomes the shortcoming using Limnodrilus hoffmeisteri opening, and eel Seedling is during raising and train
Survival rate, to more than 99%, has a good application prospect.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments be merely to illustrate the present invention and
It is not used in restriction the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, people in the art
The present invention can be made various changes or modifications by member, and these equivalent form of values fall within the application appended claims equally and limited
Scope.
Embodiment 1
Collect the glass eel of manual capture, support in the glass jar after potassium permanganate is sterilized after being transported to laboratory temporarily, glass jar
A size of 70cm × 40cm × 50cm, is the most suitably sized size.Water salinity and capture waters salinity one
Causing, 300 tail glass eels supported temporarily by each cylinder, keep depth of water 25cm.Place tile and veil in the bottom of glass jar, carry
The sheltered situation perched for eel Seedling.Oxygen increasing pump oxygenation, keeps water body more than dissolved oxygen 6.0mg/L.Drain every day 1/5 sea water,
Being simultaneously introduced the fresh water of 1/5, after 5 days, eel Seedling proceeds to cultivate in fresh water completely, heats up breeding water body while salt reduction,
Heating rate is 2 DEG C/d, and after 6-8 days, water temperature rises to 25 DEG C, keeps 25 DEG C of water temperatures constant.During salt reduction and intensification not
Throwing something and feeding bait, salt reduction and the having heated up many U.S. board eel Seedlings of benefit that Fujian Mantidis company produces that start rear every day to throw something and feed freeze Mi Zhuankai
Mouth feedstuff, first thaws feedstuff before throwing something and feeding, and secondary of throwing something and feeding every day, morning and afternoon, the most initial daily ration of feeding was fish body weight
5%, hereafter by the sky daily ration, feeding quantity that progressively increases to the 15% of fish body weight, after throwing something and feeding, about 10min uses siphonage to collect remaining bait.
During cultivation, changing water every morning once, quantity of exchanged water is the 1/3 of water body.The growing state of eel Seedling is often observed in cultivation,
The seed big to individual variation and time-division pond are raised, it is to avoid uneven seed occur.
After glass eel metamorphosis becomes HEIZI eel, supporting 100 tails in each glass jar temporarily, feedstuff is also changed into by open-mouthed bait simultaneously
Throw something and feed every day Fujian Mantidis board HEIZI Seedling mash feed, first mash feed and water are mixed according to the weight of 1:1.8 before throwing something and feeding and stir
Mixing uniformly, be cut into elongated shape with the little spoon of metal and throw something and feed, secondary of throwing something and feeding every day, morning and afternoon, the most once feeding volume was fish body weight
7%, every morning, soil pick-up changed water, and quantity of exchanged water is the 1/5 of water body, after the same method to the uneven seed of specification and time-division
Pond is raised.After HEIZI eel metamorphosis is silver color eel, each cylinder is supported 50 tails temporarily, continues mash feed of throwing something and feeding, throw something and feed and manage
Reason method is identical with HEIZI eel.
Using above method throw something and feed and manage, eel Seedling raises and train period survival rate to more than 99%.
Embodiment 2
Collect the glass eel of manual capture, support in the glass jar after potassium permanganate is sterilized after being transported to laboratory temporarily, glass jar
A size of 70cm × 40cm × 50cm, is the most suitably sized size.Water salinity and capture waters salinity one
Causing, 300 tail glass eels supported temporarily by each cylinder, keep depth of water 25cm.Place tile and veil in the bottom of glass jar, carry
The sheltered situation perched for eel Seedling.Oxygen increasing pump oxygenation, keeps water body more than dissolved oxygen 6.0mg/L.Drain every day 1/5 sea water,
Being simultaneously introduced the fresh water of 1/5, after 5 days, eel Seedling proceeds to cultivate in fresh water completely, heats up breeding water body while salt reduction,
Heating rate is 2 DEG C/d, and after 6-8 days, water temperature rises to 25 DEG C, keeps 25 DEG C of water temperatures constant.During salt reduction and intensification not
Throwing something and feeding bait, salt reduction and the having heated up many U.S. board eel Seedlings of benefit that Fujian Mantidis company produces that start rear every day to throw something and feed freeze Mi Zhuankai
Mouth feedstuff, first thaws feedstuff before throwing something and feeding, and secondary of throwing something and feeding every day, morning and afternoon, the most initial daily ration of feeding was fish body weight
6%, hereafter by the sky daily ration, feeding quantity that progressively increases to the 16% of fish body weight, after throwing something and feeding, about 20min uses siphonage to collect remaining bait.
During cultivation, changing water every morning once, quantity of exchanged water is the 1/3 of water body.The growing state of eel Seedling is often observed in cultivation,
The seed big to individual variation and time-division pond are raised, it is to avoid uneven seed occur.
After glass eel metamorphosis becomes HEIZI eel, supporting 100 tails in each glass jar temporarily, feedstuff is also changed into by open-mouthed bait simultaneously
Throw something and feed every day Fujian Mantidis board HEIZI Seedling mash feed, first mash feed and water are mixed according to the weight of 1:1.8 before throwing something and feeding and stir
Mixing uniformly, be cut into elongated shape with the little spoon of metal and throw something and feed, secondary of throwing something and feeding every day, morning and afternoon, the most once feeding volume was fish body weight
8%, every morning, soil pick-up changed water, and quantity of exchanged water is the 1/5 of water body, after the same method to the uneven seed of specification and time-division
Pond is raised.After HEIZI eel metamorphosis is silver color eel, each cylinder is supported 50 tails temporarily, continues mash feed of throwing something and feeding, throw something and feed and manage
Reason method is identical with HEIZI eel.
Using above method throw something and feed and manage, eel Seedling raises and train period survival rate to more than 98%.
Claims (7)
1. a Japanese eel seed indoor domesticating method, including:
(1) glass eel is supported temporarily in glass jar, reduce the salinity of breeding water body and heat up simultaneously, do not throw during salt reduction and intensification
Feeding bait, after completing, every day starts to throw something and feed the rotten shape starter diet of frost, morning and afternoon the most once, initial day feeding volume be fish body weight
5～6%, hereafter by the sky feeding volume that progressively increases to the 15～16% of fish body weight, after throwing something and feeding, 10-20min uses siphonage to collect remaining opening
Feedstuff；During cultivation, changing water every morning once, quantity of exchanged water is the 1/3 of water body；
(2) after glass eel metamorphosis becomes HEIZI eel, changing mash feed of throwing something and feeding every day into, morning and afternoon, the most once feeding volume was fish body weight
7～8%；Every morning, soil pick-up changed water, and quantity of exchanged water is the 1/5 of water body；After HEIZI eel metamorphosis is silver color eel, continue powder of throwing something and feeding
Shape feedstuff, throws something and feeds identical with HEIZI eel with soil pick-up water changing method.
2. a kind of Japanese eel seed indoor as claimed in claim 1 domesticating method, it is characterised in that: glass in described step (1)
Tile and veil are placed in the bottom of glass cylinder.
3. a kind of Japanese eel seed indoor as claimed in claim 1 domesticating method, it is characterised in that: in described step (1) temporarily
Oxygen increasing pump oxygenation when supporting, keeps water body more than dissolved oxygen 6.0mg/L.
4. a kind of Japanese eel seed indoor as claimed in claim 1 domesticating method, it is characterised in that: fall in described step (1)
The method of Low-salinity particularly as follows: drain every day 1/5 sea water, be simultaneously introduced the fresh water of 1/5.
5. a kind of Japanese eel seed indoor as claimed in claim 1 domesticating method, it is characterised in that: described step (1) rises
The method of temperature is particularly as follows: heating rate is 2 DEG C/d, and after 6-8 days, water temperature rises to 25 DEG C, keeps 25 DEG C of water temperatures constant.
6. a kind of Japanese eel seed indoor as claimed in claim 1 domesticating method, it is characterised in that: described step (2) is thrown
Feed before mash feed first by mash feed and water according to weight ratio 1:1.8 mixing and stirring, be cut into elongated shape with the little spoon of metal
Throw something and feed.
7. a kind of Japanese eel seed indoor as claimed in claim 1 domesticating method, it is characterised in that: step (1) and (2) are supported
Observe the growing state of anguilla japonica seed, the seed big to individual variation and time-division pond during growing to raise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410598180.8A CN104381164B (en) | 2014-10-30 | 2014-10-30 | Indoor domestication method for Japanese eel fries |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410598180.8A CN104381164B (en) | 2014-10-30 | 2014-10-30 | Indoor domestication method for Japanese eel fries |
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| Publication Number | Publication Date |
|---|---|
| CN104381164A CN104381164A (en) | 2015-03-04 |
| CN104381164B true CN104381164B (en) | 2017-01-11 |
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| CN201410598180.8A Expired - Fee Related CN104381164B (en) | 2014-10-30 | 2014-10-30 | Indoor domestication method for Japanese eel fries |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526715B (en) * | 2018-01-26 | 2022-03-29 | 株式会社新日本科学 | Method for breeding fry of eel fishes |
| CN109618988A (en) * | 2019-01-25 | 2019-04-16 | 中国水产科学研究院东海水产研究所 | Method for temporarily cultivating in a kind of Japanese eel room |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101461334B (en) * | 2007-12-17 | 2010-12-08 | 中国水产科学研究院东海水产研究所 | Method for obtaining normal mature sperm of eel |
| CN102018141B (en) * | 2010-11-19 | 2012-11-14 | 福建天马饲料有限公司 | Anguilla japonica powdery mixed feed |
| CN102301973A (en) * | 2011-08-12 | 2012-01-04 | 中国水产科学研究院珠江水产研究所 | Method for cultivating Anguilla marmorata |
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