CN115443934A - Shielding net for improving cultivation survival rate of freshwater shrimp larvae and using method thereof - Google Patents
Shielding net for improving cultivation survival rate of freshwater shrimp larvae and using method thereof Download PDFInfo
- Publication number
- CN115443934A CN115443934A CN202211270806.3A CN202211270806A CN115443934A CN 115443934 A CN115443934 A CN 115443934A CN 202211270806 A CN202211270806 A CN 202211270806A CN 115443934 A CN115443934 A CN 115443934A
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- net
- mesh
- shelling
- shielding
- shrimp
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- 241000238557 Decapoda Species 0.000 title claims abstract description 64
- 239000013505 freshwater Substances 0.000 title claims abstract description 30
- 230000004083 survival effect Effects 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 33
- 208000034699 Vitreous floaters Diseases 0.000 claims abstract description 16
- 241000269799 Perca fluviatilis Species 0.000 claims description 7
- 238000012216 screening Methods 0.000 claims 1
- 208000028804 PERCHING syndrome Diseases 0.000 abstract description 29
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009360 aquaculture Methods 0.000 abstract description 2
- 244000144974 aquaculture Species 0.000 abstract description 2
- 239000004698 Polyethylene Substances 0.000 description 7
- -1 polyethylene Polymers 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
- 241000143060 Americamysis bahia Species 0.000 description 6
- 238000009395 breeding Methods 0.000 description 5
- 230000001488 breeding effect Effects 0.000 description 5
- 238000012258 culturing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241001520913 Phyllostachys edulis Species 0.000 description 1
- 235000003570 Phyllostachys pubescens Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 239000011464 hollow brick Substances 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- A01K61/70—Artificial fishing banks or reefs
- A01K61/75—Artificial fishing banks or reefs floating
-
- 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
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
-
- 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 the technical field of aquaculture. The invention provides a shielding net for improving the survival rate of freshwater shrimp fry cultivation and a using method thereof, wherein the shielding net comprises a perching and shelling net, connecting ropes and floaters, the perching and shelling net is connected in series by the connecting ropes, and the floaters are arranged on the connecting ropes at intervals of 45-55 cm. After the shielding net is put into a water body, a sufficient habitat is provided for the freshwater shrimp seeds, and the net bulges on the inhabiting and shelling net provide shelling places for the freshwater shrimp seeds. The shielding net is simple in manufacturing process, convenient to manufacture, transport and store, easy to master in the setting method, and capable of effectively improving the survival rate of the freshwater shrimp fry cultivation.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a shielding net for improving the survival rate of freshwater shrimp fry cultivation and a using method thereof.
Background
The fresh water shrimps have strong consciousness in the territory, are fond of living in the hidden place of the water body, have the habit of killing each other, particularly have uneven sizes and molting, and have low survival rate of shrimp fry cultivation. At present, most of freshwater shrimp larvae are cultivated by planting aquatic plants in a cultivation pool or placing moso bamboos, hollow bricks, asbestos tiles, plastic calandria and the like to provide concealment for the shrimp larvae so as to reduce the self-killing of the shrimp larvae and improve the cultivation survival rate, but the effect is not obvious, and the cultivation survival rate of the shrimp larvae is usually below 70%.
Disclosure of Invention
The invention aims to provide a shielding net for improving the survival rate of the freshwater shrimp fry in cultivation and a using method thereof, and solves the problems of self-phase killing of the freshwater shrimp fry and low survival rate in cultivation.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a shielding net for improving the survival rate of freshwater shrimp fry cultivation, which consists of a perching and shelling net, connecting ropes and floaters, wherein the perching and shelling net is connected in series by the connecting ropes, and the floaters are arranged on the connecting ropes at intervals of 45-55 cm.
Preferably, the inhabitation hulling net consists of a net sheet, a fixing rod and a sinker.
Preferably, the mesh is rectangular, the length of the long side of the mesh is 90-110 cm, the length of the short side of the mesh is 8-12 cm, and the two short sides of the mesh are respectively fixed with the fixing rod and the sinker.
Preferably, the fixing rod of the perching and shelling net is arranged above, the sinker is arranged below and the perch is vertically placed in water.
Preferably, 10-12 net bulges are arranged on the perching and shelling net from the top to the bottom, the net bulges are perpendicular to the net sheets, the length of the net bulges is the same as the length of the short sides of the net sheets, the width of the net bulges is 2-3 cm, and the interval between every two adjacent net bulges is 4-6 cm.
Preferably, the perching hulling nets are arranged in parallel, the fixing rods are connected in series by connecting ropes, and a gap between two adjacent perching hulling nets is 8 to 12cm.
The invention also provides a using method of the shielding net, which comprises the following steps: the shielding net is placed in the water body 1-2 days before the shrimp larvae are put in.
Preferably, the amount of the shielding net is 0.8-1.2 meters per square meter of water surface.
Preferably, the gap between the two rows of shielding nets is 50-60 cm.
The invention provides a shielding net for improving the survival rate of freshwater shrimp fry cultivation and a using method thereof, wherein the shielding net comprises a perching and shelling net, connecting ropes and floaters, the perching and shelling net is connected in series by the connecting ropes, and the floaters are arranged on the connecting ropes at intervals of 45-55 cm. After the shielding net is put into a water body, a sufficient habitat is provided for the freshwater shrimp seeds, and the net protrusions on the perching and shelling net provide shelling places for the freshwater shrimp seeds. The shielding net is simple in manufacturing process, convenient to manufacture, transport and store, easy to master in the setting method, and capable of effectively improving the survival rate of the freshwater shrimp fry cultivation.
Drawings
FIG. 1 is a schematic view showing the structure of a shielding net, which includes (1) a connecting rope, (2) a float, and (3) a perching and hulling net
FIG. 2 is a schematic view of the structure of the perching and shelling net, wherein (4) the fixing rod, (5) the net protrusion, (6) the net piece, and (7) the sinker are provided.
Detailed Description
The invention provides a shielding net for improving the survival rate of cultivating freshwater shrimp larvae, which consists of a perching and shelling net, connecting ropes and floaters, wherein the perching and shelling net is connected in series by the connecting ropes, and the floaters are arranged on the connecting ropes at intervals of 45-55 cm.
In the present invention, the connecting rope is preferably a polyethylene mesh wire with a diameter of 3 mm.
In the present invention, the float is preferably a fishing net float.
In the present invention, the interval between the two floats is preferably 50cm.
In the present invention, the perch hulling net is preferably composed of a mesh sheet, a fixing rod and a sinker.
In the present invention, the mesh is preferably a 20-mesh polyethylene mesh.
In the present invention, the mesh sheet is preferably rectangular, the length of the long side of the mesh sheet is preferably 90 to 110cm, more preferably 100cm, and the length of the short side is preferably 8 to 12cm, more preferably 10cm. And two short edges of the net sheet are respectively fixed with the fixing rod and the sinker.
In the present invention, the fixing rod and the sinker are preferably fixed by using a polyethylene mesh wire with a diameter of 0.1 mm.
In the present invention, the fixing bar of the perching and hulling net is placed on top and the sinker is placed on bottom, and vertically placed in water.
In the invention, 10-12 net bulges are arranged on the perching and shelling net from the top to the bottom.
In the present invention, the number of the net protrusions is preferably 11.
In the present invention, the convex net is preferably perpendicular to the mesh sheet, the length of the convex net is preferably the same as the length of the short side of the mesh sheet, the width of the convex net is preferably 2 to 3cm, and the interval between two adjacent convex nets is preferably 4 to 6cm, and more preferably 5cm.
In the present invention, the perching hulling nets are preferably arranged in parallel, the fixing rods are connected in series by the connecting string, and the gap between two adjacent perching hulling nets is preferably 8 to 12cm, and more preferably 10cm.
The invention also provides a using method of the shielding net, which comprises the following steps: the shielding net is placed in the water body 1-2 days before the shrimp larvae are put in.
In the present invention, the amount of the shielding net is preferably 0.8 to 1.2 meters per square meter of water surface, and more preferably 1 meter.
In the present invention, the gap between the two rows of shielding nets is preferably 50 to 60cm, and more preferably 55cm.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
A shielding net for increasing the survival rate of young freshwater shrimps is shown in figure 1. The multifunctional perching and husking device comprises a perching and husking net (3), a connecting rope (1) and floaters (2), wherein the perching and husking net (3) is connected in series through the connecting rope (1), and the floaters (2) are arranged on the connecting rope (1) at intervals of 50 cm; the connecting rope is a polyethylene mesh wire with the diameter of 3 mm; the floater is a fishing net floater with the diameter of 10cm. The structure of the perching hulling screen is shown in fig. 2. The mesh is composed of a mesh (6), a fixing rod (4) and a sinker (7), wherein the mesh (6) is a polyethylene mesh with 20 meshes, the mesh (6) is rectangular, the length of the long edge of the mesh (6) is 100cm, the length of the short edge of the mesh is 10cm, the two short edges of the mesh (6) are respectively fixed with the fixing rod (4) and the sinker (7), and polyethylene mesh wires with the diameter of 0.1mm are adopted when the fixing rod (4) and the sinker (7) are fixed; the fixing rod (4) of the perching and shelling net is arranged above, the sinker (7) is arranged below and vertically placed in water; the habitat shelling net is provided with 11 net bulges (5) from the top to the bottom, the net bulges (5) are perpendicular to the net piece, the length of the net bulges (5) is the same as the length of the short side of the net piece, the width of the net bulges (5) is 2.5cm, the interval between every two adjacent net bulges (5) is 5cm, the net bulges (5) are sewn by the net piece, and polyethylene net wires with the diameter of 0.1mm are adopted when the net bulges (5) are sewn; the perching and shelling nets are arranged in parallel, the fixing rods are connected in series through connecting ropes, and the gap between every two adjacent perching and shelling nets is 10cm.
The working principle of the shielding net is as follows: fresh water shrimps living in a water body have respective territories, and each individual grows in continuous shelling, so that the fresh water shrimps always swim to a shallow water area of the water body to look for hidden objects to safely shell the shrimps when the shrimps are shelled. The shielding nets are arranged in parallel in the fresh water shrimp fry cultivating water body, and the shielding nets vertical to the water surface do not influence the normal cultivation management work such as feed feeding, aeration, oxygenation and the like; the shrimp seeds in the water body can find respective leading areas on two sides of the shielding net sheets (6) to inhabit, the net protrusions (5) on the shielding net sheets (6) provide safe shelling places for the shrimp seeds, the phenomenon that the shrimp seeds eat large and small shrimp seeds kill each other due to the fact that the shrimp seeds compete for the leading areas is avoided, the probability that the shrimp seeds suffer from cannibalism due to shelling is reduced, and therefore the survival rate of shrimp seed cultivation is effectively improved.
Example 2
The use method of the shielding net comprises the following steps:
step 1, placing a shielding net in a water body 2 days before the shrimp larvae are thrown, wherein the using amount of the shielding net is 1 meter per square meter of water surface, and the gap between two rows of shielding nets is 55cm; press 1m at the same time 3 The water body is matched with a 5w inflator for continuous 24-hour inflation.
Step 2, placing a shielding net in the fresh water shrimp fry culturing water body for the next day, putting the stocking shrimp fries into the culturing water body, wherein the stocking density of the shrimp fries is 600 tails/m 3 When the shrimp seedlings are put in the breeding pond, the shrimp seedlings are evenly put along the periphery of the breeding water body, and the temperature difference between the water bodies for transporting the shrimp seedlings and the breeding water body is not more than 2 ℃.
And 3, feeding the special compound feed after the shrimp seeds are bred for 6 hours, feeding the feed every 6 hours, well performing water quality management and other work during the feeding, breeding the shrimp seeds for 20 days, and harvesting and selling the shrimp seeds or transferring the shrimp seeds to a breeding stage when the shrimp seeds grow to be more than 2.5cm in length.
Advantages of the screen after use:
1. the shielding net is arranged in the fresh water shrimp fry cultivating water body, and the vertically arranged shielding net piece provides a sufficient habitat for the shrimp fries, so that the phenomenon of self-killing of the shrimp fries which are eaten too much and too little due to the fact that the shrimp fries compete for the territory is avoided, and the survival rate of the shrimp fry cultivating is effectively improved.
2. The shielding net is arranged in the fresh water shrimp fry cultivating water body, the net protrusions on the net sheets of the vertically arranged shielding net provide shelling places for the shrimp fries, the probability that the shrimp fries are eaten after shelling is reduced, the smooth shelling of the shrimp fries is effectively protected, and therefore the survival rate of shrimp fry cultivation is further effectively improved.
3. The shielding net is arranged in the fresh water shrimp seedling cultivation water body, the vertically arranged shielding net piece provides a sufficient habitat for the shrimp seedlings, and meanwhile, the net protrusions on the vertically arranged shielding net piece provide shelling places for the shrimp seedlings, so that the habitat shelling territory for the shrimp seedlings is effectively increased, and the stocking density of the shrimp seedlings and the utilization rate of the shrimp seedling cultivation water body can be properly improved.
The embodiment of the invention provides a shielding net for improving the survival rate of the freshwater shrimp fry culture and a using method thereof, wherein the shielding net comprises a perching and shelling net, connecting ropes and floaters, the perching and shelling net is connected in series by the connecting ropes, and the floaters are arranged on the connecting ropes every 45-55 cm. After the shielding net is put into a water body, a sufficient habitat is provided for the freshwater shrimp seeds, and the net protrusions on the perching and shelling net provide shelling places for the freshwater shrimp seeds. The shielding net is simple in manufacturing process, convenient to manufacture, transport and store, easy to master in the setting method, and capable of effectively improving the survival rate of the freshwater shrimp fry cultivation.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and amendments can be made without departing from the principle of the present invention, and these modifications and amendments should also be considered as the protection scope of the present invention.
Claims (9)
1. The shielding net for improving the survival rate of the freshwater shrimp fry culture is characterized by comprising an inhabitation and shelling net, connecting ropes and floaters, wherein the inhabitation and shelling net is connected in series by the connecting ropes, and the floaters are arranged on the connecting ropes at intervals of 45-55 cm.
2. The screen of claim 1 wherein the perch and decladding net is comprised of mesh, anchor bars and sinkers.
3. The screen of claim 2, wherein the mesh is rectangular, the length of the long side of the mesh is 90-110 cm, the length of the short side of the mesh is 8-12 cm, and the two short sides of the mesh are respectively fixed with the fixing rod and the sinker.
4. A screen according to claim 3, wherein the perch and deshell net is positioned with its anchor bars on top and its sinker on bottom and vertically in the water.
5. The shielding net according to claim 4, wherein the perch and hulled net is provided with 10-12 convex nets from the top downwards, the convex nets are perpendicular to the net sheets, the length of the convex nets is the same as that of the short sides of the net sheets, the width of the convex nets is 2-3 cm, and the interval between every two adjacent convex nets is 4-6 cm.
6. A screen according to any one of claims 1 to 5, wherein the perch screens are arranged in parallel and the fixing bars are connected in series by connecting ropes, and the gap between two adjacent perch screens is 8 to 12cm.
7. A method of using a screen as claimed in any one of claims 1 to 6, comprising the steps of: the shielding net is placed in the water body 1-2 days before the shrimp larvae are put in.
8. The method of claim 7 wherein the amount of said screen is 0.8 to 1.2 meters per square meter of water surface.
9. A method according to claim 7 or 8, characterized in that the gap between the two rows of screening mesh is 50-60 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211270806.3A CN115443934A (en) | 2022-10-17 | 2022-10-17 | Shielding net for improving cultivation survival rate of freshwater shrimp larvae and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211270806.3A CN115443934A (en) | 2022-10-17 | 2022-10-17 | Shielding net for improving cultivation survival rate of freshwater shrimp larvae and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115443934A true CN115443934A (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211270806.3A Pending CN115443934A (en) | 2022-10-17 | 2022-10-17 | Shielding net for improving cultivation survival rate of freshwater shrimp larvae and using method thereof |
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| Country | Link |
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| CN (1) | CN115443934A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0880138A (en) * | 1994-09-09 | 1996-03-26 | Moriwaki Eng:Kk | Crustacean culturing equipment |
| US20050072368A1 (en) * | 2003-09-08 | 2005-04-07 | Industrial Technology Research Institute | Method and device for cultivating and maintaining aquatic crustaceans |
| CN203723259U (en) * | 2014-03-20 | 2014-07-23 | 杨书戈 | Young freshwater shrimp attachment base |
| CN203827866U (en) * | 2014-02-17 | 2014-09-17 | 苏州大学 | Chinese mitten crab shelling concealing device |
| CN205106020U (en) * | 2015-07-27 | 2016-03-30 | 上海市水产研究所（上海市水产技术推广站） | Artifical freshwater shrimp adherance |
| CN208047762U (en) * | 2018-03-12 | 2018-11-06 | 中国水产科学研究院南海水产研究所深圳试验基地 | Cray cultivation attachment matrix and cray aquaculture pond |
| KR101934447B1 (en) * | 2018-02-13 | 2019-01-02 | 동양종합건설주식회사 | artificial fish reef for lobster |
| CN110432198A (en) * | 2019-08-05 | 2019-11-12 | 广西壮族自治区水产技术推广总站 | A kind of shelling bed and cultural method for Macrobrachium rosenbergii cultivation |
| CN112616740A (en) * | 2021-01-08 | 2021-04-09 | 钟小龙 | Australia freshwater lobster multilayer inhabitation hidden device |
| CN113455431A (en) * | 2021-07-19 | 2021-10-01 | 华中农业大学 | Grass-free efficient clean three-dimensional shrimp breeding method |
-
2022
- 2022-10-17 CN CN202211270806.3A patent/CN115443934A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0880138A (en) * | 1994-09-09 | 1996-03-26 | Moriwaki Eng:Kk | Crustacean culturing equipment |
| US20050072368A1 (en) * | 2003-09-08 | 2005-04-07 | Industrial Technology Research Institute | Method and device for cultivating and maintaining aquatic crustaceans |
| CN203827866U (en) * | 2014-02-17 | 2014-09-17 | 苏州大学 | Chinese mitten crab shelling concealing device |
| CN203723259U (en) * | 2014-03-20 | 2014-07-23 | 杨书戈 | Young freshwater shrimp attachment base |
| CN205106020U (en) * | 2015-07-27 | 2016-03-30 | 上海市水产研究所（上海市水产技术推广站） | Artifical freshwater shrimp adherance |
| KR101934447B1 (en) * | 2018-02-13 | 2019-01-02 | 동양종합건설주식회사 | artificial fish reef for lobster |
| CN208047762U (en) * | 2018-03-12 | 2018-11-06 | 中国水产科学研究院南海水产研究所深圳试验基地 | Cray cultivation attachment matrix and cray aquaculture pond |
| CN110432198A (en) * | 2019-08-05 | 2019-11-12 | 广西壮族自治区水产技术推广总站 | A kind of shelling bed and cultural method for Macrobrachium rosenbergii cultivation |
| CN112616740A (en) * | 2021-01-08 | 2021-04-09 | 钟小龙 | Australia freshwater lobster multilayer inhabitation hidden device |
| CN113455431A (en) * | 2021-07-19 | 2021-10-01 | 华中农业大学 | Grass-free efficient clean three-dimensional shrimp breeding method |
Non-Patent Citations (1)
| Title |
|---|
| 薛怀宁: ""青虾养殖技术"", 中国水利水电出版社, pages: 59 * |
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