CN107996484B - A kind of breeding method of multiple net cage induction monopterus albus fry classification - Google Patents
A kind of breeding method of multiple net cage induction monopterus albus fry classification Download PDFInfo
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- CN107996484B CN107996484B CN201810101419.4A CN201810101419A CN107996484B CN 107996484 B CN107996484 B CN 107996484B CN 201810101419 A CN201810101419 A CN 201810101419A CN 107996484 B CN107996484 B CN 107996484B
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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
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
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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
- A01K61/60—Floating cultivation devices, e.g. rafts or floating fish-farms
- A01K61/65—Connecting or mooring devices therefor
-
- 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
- A01K61/90—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination
- A01K61/95—Sorting, grading, counting or marking live aquatic animals, e.g. sex determination specially adapted for fish
-
- 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
- A01K67/00—Rearing or breeding animals, not otherwise provided for; New breeds of animals
- A01K67/02—Breeding vertebrates
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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 discloses a kind of breeding methods of multiple net cage induction monopterus albus fry classification.Operating procedure is as follows: 1. ponds prepare；2. net cage production and arrangement；3. seed is put in a suitable place to breed；4. inducing breeding graded；5. catching big specification eel seedling.In the entire implementation process of the present invention, disinfectant of not splashing does not use antibiotic；It is time saving and energy saving, the case where swamp eel stress reaction and swamp eel mutually kill and devour is reduced, weed survival rate is improved；For monopterus albus fry by breeding graded, uniform specification, the speed of growth is fast.With the method for the present invention successful incubation seed, weed survival rate 20%, total body weight gains 15%, and eel seedling uniform specification can be improved, convenient for selling, can get significant economic benefit.
Description
Technical field
The invention belongs to technical field of aquaculture, are specifically exactly to be induced using the multiple applications that one kind artificially designs
Monopterus albus fry it is breeding graded.
Background technique
For a long time, the method for swamp eel artificial breeding mainly has pond culture, paddy field aquaculture and three kinds of cage culture；In recent years
Carry out culture of swamp eel area to expand year by year, breeding way is concentrated mainly on cage culture.
Cage culture swamp eel density is big, yield is high, feed convenience, harvesting is easy.But during current swamp eel cage culture
There is also many deficiencies: 1., due to the factors such as eel seedling opening time, the ability and the chance difference that obtain bait, cause with a batch
Eel seedling can often occur big swamp eel and eat small swamp eel often with there is a nonsynchronous problem of growth and development, and when eel seedling specification difference is larger
Situation, culture efficiency is through suffering a loss；If 2. carry out branch mailbox to the eel seedling of cause diversified in specifications using conventional method, artificial transposition,
When selecting eel seedling, the improper stress reaction with eel seedling itself of manual operation easily leads to injury, influences survival rate；3. people is transposition eel
Seedling is very time-consuming and laborious, large labor intensity.
Summary of the invention
Low in order to solve current swamp eel survival rate in the breeding process of artificial propagation seedling, growth and development is asynchronous and time-consuming
The status of large-scale cultivation needs it is not able to satisfy arduously, the present invention provides a kind of cultivation of multiple net cage induction monopterus albus fry classification
Method.
A kind of cultivation operating procedure of multiple net cage induction monopterus albus fry classification is as follows:
(1) the finless eel in pond net cage ecosystem is constructed
(1.1) prepare pond
667 m of pond area2More than, the pond depth of water is greater than 2 meters, and water quality is pure and fresh, and convenient into draining, environment is more quiet；
(1.2) design
The net cage is divided into three layers from the inside to the outside: internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c), and is
Five open-topped cuboids of face closure；The mesh sheet mesh of internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c) is distinguished
It is 40,20,30；
(1.3) net cage is arranged
The drinking water of internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c) is deep to be not less than 1.0m, 1.5m, 1.5m respectively,
The height that each layer net cage exposes the surface is 0.3-0.5m；The net cage is fixed in pond, internal layer net cage (a), middle layer net cage (b)
It corresponds to each other and fixes with outer layer net cage (c)；The net cage gross area is not more than the 25% of the pond water surface in pond；In each row's net cage, phase
Spacing between adjacent net cage is 0.5-1m, the distance between adjacent two rows net cage 1.0-2.0m；
(2) seed is put in a suitable place to breed
(2.1) seed is launched
Since swamp eel breeding needs to complete oviposition and fertilization in the nest of the constructions such as water hyacinth, swamp eel prelarva is commonly attached to
On water hyacinth；Therefore, after monopterus albus fry emergence, the water hyacinth for being attached with swamp eel prelarva is lifted and is put into internal layer net cage (a), is put in a suitable place to breed
Density is 6-8 nest/m2；
(2.2) eel seedling cultivates
Eel seedling is launched second day, and the daily right place of feeding volume routinely feeds the water earthworm that flowing water cleans up, and is promoted
Into the eel seedling fast-growth in internal layer net cage (a)；The water earthworm to knead is launched respectively at 4-5 water hyacinth rhizome；
(3) it induces breeding graded
(3.1) when swamp eel seedling age 30 days in internal layer net cage (a) remove internal layer net cage when body length reaches 50~60mm
(a), enter eel seedling and water hyacinth in middle layer net cage (b) together；The water hyacinth of 30%-40% in middle layer net cage (b) is taken to be put into again
In outer layer net cage (c), using the cauline leaf of water hyacinth as feeding food platform；
(3.2) middle layer net cage (b) suspends bait throwing in 3-7 days, while feeding the earthworm that aborts on food platform in outer layer net cage (c)
Earthworm lures that the lesser swamp eel of bodily form specification enters in outer layer net cage (c) into, realizes induction classification；
(3. 3) induction classification is completed, net cage (b) and the middle bait throwing in respectively of outer layer net cage (c), each bait throwing in are first outer in middle level
Layer net cage (c) middle layer net cage (b) again, other routinely carry out daily management；
(4) big specification eel seedling is caught
Culture of swamp eel in middle layer net cage (b) and outer layer net cage (c) reaches 20g/ tail specification, implements fishing, as big rule
Lattice eel seedling.
The technical solution further limited is as follows:
In step (1.2), the mesh sheet mesh of outer layer net cage (c) is 30, and length is respectively 2.0-3.0m, 2.0-
3.0m,2.0-2.5m；The mesh sheet mesh of middle layer net cage (b) is 20, and length is respectively 1.5-2.0m, 1.5-2.0m, 2.0-
2.5m；The mesh sheet mesh of internal layer net cage (a) is 40, and length is respectively 1.0-1.5m, 1.0-1.5m, 1.5-2.0m.
In step (1.3), it is fixedly installed with a timber respectively in 4 upright vertical edges of the outer layer net cage (c),
Outer layer net cage (c) is fixed in pond by 4 timbers；Cross-shaped pair being fixed at the top of outer layer net cage (c) of two bamboo poles
On linea angulata；Four angles at the top of internal layer net cage (a) and four angles at the top of middle layer net cage (b) are fixed on described two by rope end
Weight is fixed respectively on bamboo pole, on the lower end quadrangle of internal layer net cage (a) and the lower end quadrangle of middle layer net cage (b) makees weight.
Advantageous effects of the invention embody in the following areas:
(1) feelings that the injured improper caused monopterus albus fry of manual operation, stress reaction and big swamp eel kill and devour small swamp eel are reduced
Condition improves 20% or more survival rate, 15% or more the total body weight gains of monopterus albus fry.
(2) time saving and energy saving by operations such as the different automatic branch mailbox of eel seedling of induction specification.
(3) it can provide the monopterus albus fry of high-volume, high quality and uniform specification, to meet large-scale cultivation swamp eel to seed
Requirement, have a good application prospect.
Detailed description of the invention
Fig. 1 is the triple cage structure schematic diagrames of the present invention.
Fig. 2 is triple net cage fixed installation diagrams.
Specific embodiment
By taking yangtse-huaihe region as an example, with reference to the accompanying drawing, the present invention is further described by embodiment.
Embodiment 1
A kind of breeding method operating procedure of multiple net cage induction monopterus albus fry classification is as follows:
(1) the finless eel in pond net cage ecosystem is constructed
(1.1) prepare pond
At the beginning of 4 months 2014, the pond of 30 mu of areas is selected, the pond depth of water is greater than 2 meters, and water quality is pure and fresh, ring convenient into draining
Border is more quiet；
(1.2) design
Referring to Fig. 1, net cage is divided into three layers from the inside to the outside: internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c), and
It is five face closures only open-topped square；
The mesh sheet mesh of outer layer net cage (c) is 30, and length is 2.5m；Drinking water is 2.0 meters deep, and net cage exposes the surface
0.5 meter.The mesh sheet mesh of middle layer net cage (b) is 20, and length is 2.0m；Deep 1.7 meters of drinking water, net cage exposes the surface 0.3
Rice.The mesh sheet mesh of internal layer net cage (a) is 40, and length is 1.5 meters, and drinking water is 1.2 meters deep, and net cage exposes the surface 0.3 meter；
(1.3) net cage is arranged
Referring to fig. 2, a bamboo stake, outer layer net cage are fixedly installed in 4 upright vertical edges of outer layer net cage (c) respectively
(c) it is fixed in pond by 4 bamboo stakes；It is interior on the cross-shaped diagonal line being fixed at the top of outer layer net cage (c) of two bamboo poles
Four angles at the top of layer net cage (a) and four angles at the top of middle layer net cage (b) are fixed on two bamboo poles by rope end, interior
Weight is fixed on the lower end quadrangle of layer net cage (a) and the lower end quadrangle of middle layer net cage (b) respectively and makees weight, prevents water flow or strong wind
Mobile net cage.
50 net cages are set altogether, and point 5 arrangements are set, 10 net cages of every row.In each row's net cage, the distance between adjacent net cage
For 0.5m；The distance between adjacent two rows of net cages 2m.
(2) seed is put in a suitable place to breed
(2.1) seed is launched
Since swamp eel breeding needs to complete oviposition and fertilization in the nest of the constructions such as water hyacinth, swamp eel prelarva is commonly attached to
On water hyacinth；Therefore, after monopterus albus fry emergence, the water hyacinth for being attached with swamp eel prelarva is put into togerther internal layer net cage (a), is put in a suitable place to breed
Density is 7 nests/m2；
(2.2) eel seedling cultivates
Eel seedling is launched second day, and the daily right place of feeding volume routinely feeds the water earthworm that flowing water cleans up, and is promoted
Into the eel seedling fast-growth in internal layer net cage (a)；The water earthworm to knead is launched respectively at 4 water hyacinth rhizomes；And it is close
Feeding volume can suitably be increased if all eating up in 20 minutes by cutting observation food situation, be generally fixed to be advisable when 17-18.
(3) it induces breeding graded
(3.1) when swamp eel seedling age 30 days in internal layer net cage (a) remove internal layer net cage when body length reaches 50~60mm
(a), enter eel seedling and water hyacinth in middle layer net cage (b) together；In middle layer net cage (b) 35% water hyacinth is taken to be put into outer layer again
In net cage (c), using the cauline leaf of water hyacinth as feeding food platform；
(3.2) middle layer net cage (b) suspends bait throwing in 5 days, while feeding the earthworm that aborts on food platform in outer layer net cage (c),
It lures that the lesser swamp eel of bodily form specification enters in outer layer net cage (c) into, realizes induction classification；
(3. 3) induction classification is completed, net cage (b) and the middle bait throwing in respectively of outer layer net cage (c), each bait throwing in are first outer in middle level
Layer net cage (c) middle layer net cage (b) again, other routinely carry out daily management, until overwintering.
(4) big specification eel seedling is caught
Culture of swamp eel in middle layer net cage (b) and outer layer net cage (c) reaches 20g/ tail specification, implements fishing, as big rule
Lattice eel seedling is sold.
Embodiment 2
Internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c), and be that five face closures are open-topped rectangular
Body.
The mesh sheet mesh of outer layer net cage (c) is 30, and length is respectively 3.0m, 2.5m, 2.0m；Drinking water is 1.7 meters deep, net
Case exposes the surface 0.3 meter.The mesh sheet mesh of middle layer net cage (b) is 20, and length is respectively 2.0m, 1.5m, 2.0m；Drinking water is deep
1.7 meters, net cage exposes the surface 0.3 meter.The mesh sheet mesh of internal layer net cage (a) is 40, and length is respectively 1.5m, 1.0m, 1.5
M, drinking water is 1.2 meters deep, and net cage exposes the surface 0.3 meter.
Other structures are the same as embodiment 1.
Concrete operation step is the same as embodiment 1.
Claims (2)
1. a kind of breeding method of multiple net cage induction monopterus albus fry classification, it is characterised in that operating procedure is as follows:
(1) the finless eel in pond net cage ecosystem is constructed
(1.1) prepare pond
667 m of pond area2More than, the pond depth of water is greater than 2 meters, and water quality is pure and fresh, environment quiet convenient into draining；
(1.2) design
The net cage is divided into three layers from the inside to the outside: internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c), and is five
Face closure only open-topped cuboid；Internal layer net cage (a), middle layer net cage (b) and the mesh sheet mesh of outer layer net cage (c) are respectively
40,20,30；
(1.3) net cage is arranged
The drinking water of internal layer net cage (a), middle layer net cage (b) and outer layer net cage (c) is deep to be not less than 1.0m, 1.5m, 1.5m, each layer respectively
The height that net cage exposes the surface is 0.3-0.5m；The net cage is fixed in pond, internal layer net cage (a), middle layer net cage (b) and outer
Layer net cage (c), which corresponds to each other, to be fixed；The net cage gross area is not more than the 25% of the pond water surface in pond；In each row's net cage, adjacent net
Spacing between case is 0.5-1m, and the distance between adjacent two rows net cage is 1.0-2.0m；
A timber is fixedly installed in 4 upright vertical edges of the outer layer net cage (c) respectively, outer layer net cage (c) passes through 4
Root timber is fixed in pond；On the cross-shaped diagonal line being fixed at the top of outer layer net cage (c) of two bamboo poles；Internal layer net cage
(a) four angles at the top of and four angles at the top of middle layer net cage (b) are fixed on two bamboo poles by rope end, internal layer net cage
(a) weight is fixed on the lower end quadrangle of lower end quadrangle and middle layer net cage (b) respectively and makees weight；
(2) seed is put in a suitable place to breed
(2.1) seed is launched
After monopterus albus fry emergence, the water hyacinth for being attached with swamp eel prelarva is put into togerther internal layer net cage (a), breeding density 6-8
Nest/m2；
(2.2) eel seedling cultivates
Eel seedling is launched second day, and the daily right place of feeding volume routinely feeds the water earthworm that flowing water cleans up, in promotion
Eel seedling fast-growth in layer net cage (a)；The water earthworm to knead is launched respectively at 4-5 water hyacinth rhizome；
(3) it induces breeding graded
(3.1) when swamp eel seedling age 30 days in internal layer net cage (a) remove internal layer net cage (a), make eel when body length reaches 5~6 cm
Seedling and water hyacinth enter in middle layer net cage (b) together；The water hyacinth of 30%-40% in middle layer net cage (b) is taken to be put into outer layer net cage again
(c) in, using the cauline leaf of water hyacinth as feeding food platform；
(3.2) middle layer net cage (b) suspends bait throwing in 3-7 days, while feeding the earthworm that aborts on food platform in outer layer net cage (c), lures
Enter bodily form specification lesser swamp eel in outer layer net cage (c), realizes induction classification；
(3. 3) induction classification is completed, in middle level net cage (b) and the middle bait throwing in respectively of outer layer net cage (c), each bait throwing in elder generation outer layer net
Case (c) middle layer net cage (b) again；Other routinely carry out daily management；
(4) big specification eel seedling is caught
Culture of swamp eel in middle layer net cage (b) and outer layer net cage (c) reaches 20g/ tail specification, implements fishing, as big specification eel
Seedling.
2. a kind of breeding method of multiple net cage induction monopterus albus fry classification according to claim 1, it is characterised in that: step
Suddenly in (1.2), the length of outer layer net cage (c) is respectively 2.0-3.0m, 2.0-3.0m, 2.0-2.5m；Middle layer net cage (b)
Length is respectively 1.5-2.0m, 1.5-2.0m, 2.0-2.5m；The length of internal layer net cage (a) be respectively 1.0-1.5m,
1.0-1.5m、1.5-2.0m。
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| CN109548729B (en) * | 2018-12-30 | 2021-08-20 | 舟山市六横鑫马海水养殖专业合作社 | Cage culture device and method for small yellow croakers with multiple nutrition levels |
| CN110140678B (en) * | 2019-07-05 | 2021-09-10 | 安徽知技网知识产权运营有限公司 | Method for breeding finless eels in greenhouse |
| CN112056244A (en) * | 2020-08-24 | 2020-12-11 | 中国水产科学研究院长江水产研究所 | Efficient culture method for artificial breeding of finless eel fries |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103461241A (en) * | 2013-09-09 | 2013-12-25 | 西华大学 | Safe ecological multi-layer aquaculture net cage |
| CN105028268A (en) * | 2015-06-23 | 2015-11-11 | 李成启 | Classified net-cage fish cultivating method |
| CN105532544A (en) * | 2016-02-01 | 2016-05-04 | 浙江省海洋水产研究所 | Fry grading device and grading method |
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2018
- 2018-02-01 CN CN201810101419.4A patent/CN107996484B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103461241A (en) * | 2013-09-09 | 2013-12-25 | 西华大学 | Safe ecological multi-layer aquaculture net cage |
| CN105028268A (en) * | 2015-06-23 | 2015-11-11 | 李成启 | Classified net-cage fish cultivating method |
| CN105532544A (en) * | 2016-02-01 | 2016-05-04 | 浙江省海洋水产研究所 | Fry grading device and grading method |
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