CN104381164A - Indoor domestication method for Japanese eel fries - Google Patents
Indoor domestication method for Japanese eel fries Download PDFInfo
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- CN104381164A CN104381164A CN201410598180.8A CN201410598180A CN104381164A CN 104381164 A CN104381164 A CN 104381164A CN 201410598180 A CN201410598180 A CN 201410598180A CN 104381164 A CN104381164 A CN 104381164A
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- feeding
- eel
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K61/00—Culture of aquatic animals
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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
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 the indoor domesticating method of a kind of Japanese eel seed
Background technology
China is an aquaculture big country, and Japanese eel, as a kind of excellent aquaculture object, is one of China's export govern-house-variety of earning foreign exchange.But the artificial propagation techniques difficulty of its seed is not also captured, up to the present, the natural seeding, wild fry still just relied on completely in estuary region collection migration way supports huge common eel aquaculture.After eel seedling arrives region, entrance of Changjiang River, metamorphosis is the translucent cylindrical young, and claim glass eel or white young eel, glass eel traces back through river mouth, occurs melanin, and back blackening is referred to as black young eel.Cultivation in propagating artificially between eel seedling period of metamorphosis is extremely important with management, and the glass eel initial feeding stage directly affects the critical period of its survival rate especially.In traditional glass eel cultivating process, all adopt water earthworm (being commonly called as red worm) opening, but this open-mouthed bait has following shortcoming: (1) carries the pathogenic microorganisms such as a large amount of bacterial viruses, easily makes eel seedling catch; (2) residual bait not easily collecting, waste is comparatively large, pollutes breeding water body; (3) need the amount gradually reducing water earthworm in proportion in the tame and docile food after metamorphosis is black young eel, increase the amount of artificial feed, process is comparatively loaded down with trivial details, and is easy to occur to turn the difficult and impact growth of material in the process being transitioned into mash feed by water earthworm.
Summary of the invention
The invention provides the indoor domesticating method of a kind of Japanese eel seed, the method technique is simple, and cost is low, and effectively overcome the shortcoming adopting water earthworm opening, eel seedling survival rate in the process of raising and train, to more than 99%, has a good application prospect.
The indoor domesticating method of a kind of Japanese eel seed of the present invention, comprising:
(1) glass eel is supported temporarily in glass jar, reduce the salinity of breeding water body and heat up simultaneously, not throw something and feed between salt reduction and temperature raising period bait, after completing, every day starts freezing rotten shape starter diet of throwing something and feeding, morning and afternoon is each once, initial daily ration of feeding is 5 ~ 6% of fish body weight, after this progressively increases daily ration, feeding quantity to 15 ~ 16% of fish body weight by sky, and after throwing something and feeding, 10-20min adopts siphonage to collect remaining bait; During cultivation, change water every morning once, quantity of exchanged water is 1/3 of water body;
(2) after glass eel metamorphosis becomes black young eel, change mash feed of throwing something and feeding every day into, morning and afternoon, respectively once feeding volume was 7 ~ 8% of fish body weight; Every morning, soil pick-up changed water, and quantity of exchanged water is 1/5 of water body; After black young eel metamorphosis is silver color eel, continue mash feed of throwing something and feeding, throwing something and feeding, to change water method with soil pick-up identical with black young eel.
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.
The method reducing salinity in described step (1) is specially: drain every day 1/5 seawater, add the fresh water of 1/5 simultaneously.
The method heated up in described step (1) is specially: 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.
To throw something and feed in described step (2) 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 and throw something and feed.
Observe the growing state of eel seedling in step (1) and (2) breeding process, the seed large to individual difference and time-division pond are raised.
Glass eel after catching first to proceed in fresh water after cultivation according to the method progressively changing fresh water by the present invention completely, freezing rotten shape artifical compound feed is adopted directly to throw something and feed eel seedling as open-mouthed bait, be aided with meticulous artificial feeding and management method, after glass eel metamorphosis is black young eel, use powdered artificial's manufactured feed instead to throw something and feed, according to the weight of ratio brew and water, control feeding volume, timing every day soil pick-up and change water, raises individuality diversified in specifications and time-division pond.
beneficial effect
Present invention process is simple, and cost is low, and effectively overcome the shortcoming adopting water earthworm opening, eel seedling survival rate in the process of raising and train, to more than 99%, has a good application prospect.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
Collect the glass eel of manual capture, support temporarily after being transported to laboratory in the glass jar after potassium permanganate sterilization, glass jar is of a size of 70cm × 40cm × 50cm, suitably adjusts size dimension according to actual needs.Water salinity is consistent with catching waters salinity, and each cylinder supports 300 tail glass eels temporarily, keeps depth of water 25cm.Place tile and veil in the bottom of glass jar, the sheltered situation that eel seedling is perched is provided.Oxygen increasing pump oxygenation, keeps water body more than dissolved oxygen 6.0mg/L.Drain every day 1/5 seawater, add the fresh water of 1/5, after 5 days, eel seedling proceeds in fresh water cultivate completely, heats up while salt reduction to breeding water body simultaneously, and 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.Not throw something and feed between salt reduction and temperature raising period bait, salt reduction and having heated up starts to throw something and feed the freezing rotten shape starter diet of benefit how U.S. board eel seedling of Fujian heavenly steed company production rear every day, first feed is thawed before throwing something and feeding, to throw something and feed every day secondary, morning and afternoon is each once, initial daily ration of feeding is 5% of fish body weight, after this progressively increases daily ration, feeding quantity to 15% of fish body weight by sky, and after throwing something and feeding, about 10min adopts siphonage to collect remaining bait.During cultivation, change water every morning once, quantity of exchanged water is 1/3 of water body.In cultivation, often observe the growing state of eel seedling, the seed large to individual difference and time-division pond are raised, and avoid occurring uneven seed.
After glass eel metamorphosis becomes black young eel, 100 tails are supported temporarily in each glass jar, feed also changes the black young seedling mash feed of Fujian heavenly steed board of throwing something and feeding every day into by open-mouthed bait simultaneously, first by mash feed and the water weight mixing and stirring according to 1:1.8 before throwing something and feeding, be cut into elongated shape with the little spoon of metal to throw something and feed, to throw something and feed every day secondary, morning and afternoon is each once, feeding volume is 7% of fish body weight, every morning, soil pick-up changed water, quantity of exchanged water is 1/5 of water body, raises after the same method to the uneven seed of specification and time-division pond.After black young eel metamorphosis is silver color eel, supports 50 tails temporarily in each cylinder, continue mash feed of throwing something and feeding, throw something and feed identical with black young eel with management method.
Adopt above method throw something and feed and manage, eel seedling raise and train period survival rate to more than 99%.
Embodiment 2
Collect the glass eel of manual capture, support temporarily after being transported to laboratory in the glass jar after potassium permanganate sterilization, glass jar is of a size of 70cm × 40cm × 50cm, suitably adjusts size dimension according to actual needs.Water salinity is consistent with catching waters salinity, and each cylinder supports 300 tail glass eels temporarily, keeps depth of water 25cm.Place tile and veil in the bottom of glass jar, the sheltered situation that eel seedling is perched is provided.Oxygen increasing pump oxygenation, keeps water body more than dissolved oxygen 6.0mg/L.Drain every day 1/5 seawater, add the fresh water of 1/5, after 5 days, eel seedling proceeds in fresh water cultivate completely, heats up while salt reduction to breeding water body simultaneously, and 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.Not throw something and feed between salt reduction and temperature raising period bait, salt reduction and having heated up starts to throw something and feed the freezing rotten shape starter diet of benefit how U.S. board eel seedling of Fujian heavenly steed company production rear every day, first feed is thawed before throwing something and feeding, to throw something and feed every day secondary, morning and afternoon is each once, initial daily ration of feeding is 6% of fish body weight, after this progressively increases daily ration, feeding quantity to 16% of fish body weight by sky, and after throwing something and feeding, about 20min adopts siphonage to collect remaining bait.During cultivation, change water every morning once, quantity of exchanged water is 1/3 of water body.In cultivation, often observe the growing state of eel seedling, the seed large to individual difference and time-division pond are raised, and avoid occurring uneven seed.
After glass eel metamorphosis becomes black young eel, 100 tails are supported temporarily in each glass jar, feed also changes the black young seedling mash feed of Fujian heavenly steed board of throwing something and feeding every day into by open-mouthed bait simultaneously, first by mash feed and the water weight mixing and stirring according to 1:1.8 before throwing something and feeding, be cut into elongated shape with the little spoon of metal to throw something and feed, to throw something and feed every day secondary, morning and afternoon is each once, feeding volume is 8% of fish body weight, every morning, soil pick-up changed water, quantity of exchanged water is 1/5 of water body, raises after the same method to the uneven seed of specification and time-division pond.After black young eel metamorphosis is silver color eel, supports 50 tails temporarily in each cylinder, continue mash feed of throwing something and feeding, throw something and feed identical with black young eel with management method.
Adopt above method throw something and feed and manage, eel seedling raise and train period survival rate to more than 98%.
Claims (7)
1. the indoor domesticating method of Japanese eel seed, comprising:
(1) glass eel is supported temporarily in glass jar, reduce the salinity of breeding water body and heat up simultaneously, not throw something and feed between salt reduction and temperature raising period bait, after completing, every day starts freezing rotten shape starter diet of throwing something and feeding, morning and afternoon is each once, initial daily ration of feeding is 5 ~ 6% of fish body weight, after this progressively increases daily ration, feeding quantity to 15 ~ 16% of fish body weight by sky, and after throwing something and feeding, 10-20min adopts siphonage to collect remaining bait; During cultivation, change water every morning once, quantity of exchanged water is 1/3 of water body;
(2) after glass eel metamorphosis becomes black young eel, change mash feed of throwing something and feeding every day into, morning and afternoon, respectively once feeding volume was 7 ~ 8% of fish body weight; Every morning, soil pick-up changed water, and quantity of exchanged water is 1/5 of water body; After black young eel metamorphosis is silver color eel, continue mash feed of throwing something and feeding, throwing something and feeding, to change water method with soil pick-up identical with black young eel.
2. the indoor domesticating method of a kind of Japanese eel seed as claimed in claim 1, is characterized in that: in described step (1), tile and veil are placed in the bottom of glass jar.
3. the indoor domesticating method of a kind of Japanese eel seed as claimed in claim 1, is characterized in that: oxygen increasing pump oxygenation when supporting temporarily in described step (1), keeps water body more than dissolved oxygen 6.0mg/L.
4. the indoor domesticating method of a kind of Japanese eel seed as claimed in claim 1, is characterized in that: the method reducing salinity in described step (1) is specially: drain every day 1/5 seawater, add the fresh water of 1/5 simultaneously.
5. the indoor domesticating method of a kind of Japanese eel seed as claimed in claim 1, is characterized in that: the method heated up in described step (1) is specially: 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. the indoor domesticating method of a kind of Japanese eel seed as claimed in claim 1, it is characterized in that: before mash feed of throwing something and feeding in described step (2) 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 and throw something and feed.
7. the indoor domesticating method of a kind of Japanese eel seed as claimed in claim 1, is characterized in that: growing state, the seed large to individual difference and the time-division pond raising of observing eel seedling in step (1) and (2) breeding process.
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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| CN201410598180.8A CN104381164B (en) | 2014-10-30 | 2014-10-30 | Indoor domestication method for Japanese eel fries |
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| CN104381164A true CN104381164A (en) | 2015-03-04 |
| CN104381164B 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111526715A (en) * | 2018-01-26 | 2020-08-11 | 株式会社新日本科学 | Method for breeding fry of eel fishes |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101461334A (en) * | 2007-12-17 | 2009-06-24 | 中国水产科学研究院东海水产研究所 | Method for obtaining normal mature sperm of eel |
| CN102018141A (en) * | 2010-11-19 | 2011-04-20 | 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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2014
- 2014-10-30 CN CN201410598180.8A patent/CN104381164B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101461334A (en) * | 2007-12-17 | 2009-06-24 | 中国水产科学研究院东海水产研究所 | Method for obtaining normal mature sperm of eel |
| CN102018141A (en) * | 2010-11-19 | 2011-04-20 | 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 |
Non-Patent Citations (2)
| Title |
|---|
| T.加福 等 编，洪清盾 译: "《日本现代水产养殖方法》", 30 November 1987, article ""鳗鲡的养殖技术"", pages: 13-18 * |
| 中华人民共和国农业部: "《优势农产品生产技术规范》", 29 February 2004, article ""鳗鲡的养殖"", pages: 279-291 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111526715A (en) * | 2018-01-26 | 2020-08-11 | 株式会社新日本科学 | Method for breeding fry of eel fishes |
| 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 |
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Granted publication date: 20170111 Termination date: 20201030 |