CN111838034B - Hatching device, shrimp egg hatching method and application - Google Patents
Hatching device, shrimp egg hatching method and application Download PDFInfo
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- CN111838034B CN111838034B CN202010814158.8A CN202010814158A CN111838034B CN 111838034 B CN111838034 B CN 111838034B CN 202010814158 A CN202010814158 A CN 202010814158A CN 111838034 B CN111838034 B CN 111838034B
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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
- A01K61/10—Culture of aquatic animals of fish
- A01K61/17—Hatching, e.g. incubators
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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
- A01K61/50—Culture of aquatic animals of shellfish
- A01K61/59—Culture of aquatic animals of shellfish of crustaceans, e.g. lobsters or shrimps
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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 the technical field of aquaculture, and particularly discloses an incubation device, a shrimp egg incubation method and application. The embodiment of the invention can ensure that the fertilized eggs to be incubated are flushed by water flow in the box body in the reciprocating movement process, so that the fertilized eggs are fully contacted with dissolved oxygen and are not accumulated, the bionic incubation effect is achieved, the incubation rate of the fertilized eggs of the egg-carrying shrimps can be effectively improved, the incubation condition is controllable, the incubation time is greatly shortened, the survival rate of the offspring seeds is greatly improved, and the problems of low incubation efficiency and low survival rate of the offspring seeds caused by the fact that most of the existing hatching methods for the crayfish need to adhere to the abdominal limbs of the parent for incubation are solved.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a hatching device, a shrimp egg hatching method and application.
Background
With the increasing living standard, the demand of food in the market is increasing. Among them, shrimp, as an arthropod living in water, is popular with consumers because of its high dietetic nutritive value, while crayfish, as an economic shrimp of fresh water, is popular with people because of its delicious meat taste. Crayfish breeding is an important component in the field of aquaculture, and generally has breeding advantages due to the advantages of the crayfish such as omnivory, high growth speed, strong adaptability and the like.
In general, wild crayfish must be hatched by attaching it to the abdominal limb of the mother, since the crayfish is bred by male and female mating, fertilization in vivo, and then the fertilized egg is discharged from the body and adheres to the abdominal limb of the female crayfish. Generally, fertilized eggs of oviparous shrimps comprise milky white, brown, eyespot and orange, and develop into shrimp larvae which leave the parents or continue to adhere to the abdominal limbs after the development of the main four stages.
At present, the offspring seed production of crayfish in China mainly comprises the following modes: 1) wild natural seedlings: the small individuals caught in the field have low edibility, but can be used as breeding seedlings, but the quality of the seedlings is difficult to ensure, and the survival rate of the seedlings with diseases is low; 2) the crayfish is difficult to catch all at once, the pond cleaning and removing effect is poor, the parent shrimps of different ages are mixed together, and the survival rate of the parent shrimps and the seedlings is lower under the condition; 3) the bought egg-carrying shrimps are put into a pond for incubation, and the growth synchronism of the egg-carrying shrimps is not guaranteed due to the fact that the egg-carrying shrimps usually carry bacteria, so that the production period of the spawn is greatly prolonged, and the large-scale production is not facilitated. Therefore, the above technical solution also has the following disadvantages in practical use: most of the existing crayfish hatching methods need oosperm of the oviparous shrimp to be attached to the abdominal limb of a parent for hatching, and have the problems of low hatching efficiency and low survival rate of offspring seeds.
Disclosure of Invention
The embodiment of the invention aims to provide an incubation device, which is used for solving the problems that most of the existing crayfish incubation methods in the background art need oosperm of an egg-carrying shrimp to be attached to a parent abdominal limb for incubation, the incubation efficiency is low and the survival rate of offspring seeds is low.
The embodiment of the invention is realized in such a way that the hatching device comprises a box body and a feeding hole which is arranged on the box body and used for inputting materials, wherein the box body is also provided with a discharging hole used for discharging the materials, and the hatching device also comprises
The bearing piece is positioned in the box body and used for bearing fertilized eggs to be incubated; and
lifting frame body sets up in the box, lifting frame body can follow box inside wall sideline direction reciprocating motion, it is in to hold the setting of correspondence of carrier the lifting frame is internal, can drive when lifting frame body removes it follows to hold carrier along box inside wall sideline direction reciprocating motion to make the embryonated egg of waiting to hatch receive the scouring of the rivers in the box at the reciprocating motion in-process and swing, reach bionical incubation effect.
In another embodiment of the present invention, a shrimp egg hatching method is further provided, and with the hatching apparatus, the shrimp egg hatching method specifically includes the following steps: the method comprises the following steps that fertilized eggs to be incubated are carried on a carrying piece of an incubation device, incubation liquid for incubating the fertilized eggs is conveyed into a box body through a feeding hole, and meanwhile, a lifting frame body reciprocates along the side line direction of the inner side wall of the box body to drive the carrying piece to reciprocate along the side line direction of the inner side wall of the box body, so that the fertilized eggs to be incubated are flushed by water flow in the box body in the reciprocating movement process, and the bionic incubation effect is achieved; wherein the hatching device is arranged in a hatching plant and the number of hatching devices in the hatching plant is at least one, preferably the number of hatching devices in the hatching plant is 50-100.
In another embodiment of the invention, the application of the shrimp egg hatching method in scale breeding of aquatic products is also provided. The aquatic product may be crayfish, freshwater shrimp, grass shrimp, prawn, crab, etc.
Compared with the prior art, the invention has the beneficial effects that:
the hatching device provided by the embodiment of the invention comprises a box body, a feeding hole, a discharging hole and a bearing member for bearing fertilized eggs to be hatched, wherein a lifting frame body capable of moving in a reciprocating way along the side line direction of the inner side wall of the box body is arranged in the box body, and the bearing member is correspondingly arranged in the lifting frame body, so that the fertilized eggs to be hatched are flushed by water flow in the box body in the reciprocating way, the fertilized eggs are fully contacted with dissolved oxygen and are not accumulated, the bionic hatching effect is achieved, the hatching rate of the fertilized eggs of the egg-carrying shrimps can be effectively improved, and compared with the traditional method of hatching by adhering to the abdominal limbs of the parent, the hatching condition is controllable, the hatching time is greatly shortened, the survival rate of offspring seeds is greatly improved, the problems that most of the existing hatching methods for the crayfish need to incubate the fertilized eggs to adhere to the abdominal limbs of the parent to hatch, the hatching efficiency is low and the survival rate of the offspring seeds is not high are solved, has wide market prospect.
Drawings
Fig. 1 is a schematic structural diagram of an incubation device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a box body in an incubation device according to an embodiment of the present invention.
Fig. 3 is a schematic view illustrating a connection relationship between a lifter body and a flow rate adjustment assembly in an incubation device according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a flow rate adjusting assembly in an incubation device according to an embodiment of the present invention.
In the figure: 1-a box body; 10-lifting frame body; 11-a feed inlet; 12-a flow regulating assembly; 13-a discharge hole; 14-a float; 15-a communication member; 16-a barrier; 17-a buoyant element; 18-connecting piece.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention. In order to make the technical solution of the present invention clearer, process steps and device structures well known in the art are omitted here.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Specific implementations of the present invention are described in detail below with reference to specific embodiments.
As shown in fig. 1 to 4, a structural diagram of an incubation apparatus provided for an embodiment of the present invention includes a box 1 and a feeding port 11 disposed on the box 1 for feeding a material, the box 1 is further provided with a discharging port 13 for discharging the material, and the incubation apparatus further includes:
a bearing member (not shown in the drawings, specifically a small net cage may be adopted, or other existing structures for placing fertilized eggs may be adopted, specifically selected according to requirements, and not limited herein) located in the box body 1, the bearing member being used for bearing the fertilized eggs to be incubated; and
lifting frame body 10 sets up in the box 1, lifting frame body 10 can follow 1 inside wall sideline direction reciprocating motion of box, it is in to hold the setting of correspondence of carrier in lifting frame body 10, can drive when lifting frame body 10 removes it follows to hold carrier 1 inside wall sideline direction reciprocating motion of box to the messenger treats that the embryonated egg of hatching receives the scouring of the rivers in the box 1 at the reciprocating motion in-process and swings, reaches bionical hatching effect.
In the embodiment of the present invention, the hatching fluid for hatching the fertilized eggs (the hatching fluid can be an existing product, and is specifically selected according to the needs, and is not limited herein, it should be noted that the temperature of the hatching fluid is controlled at 25-26 ℃, the dissolved oxygen is above 8 mg/l, and the hatching fluid is sterilized by ultraviolet rays) flows into the box body 1, and meanwhile, the carrying member carries the fertilized eggs to be hatched, and then the lifting frame body 10 reciprocates along the side line direction of the inner side wall of the box body 1 (specifically, moves up and down in the box body 1) to drive the carrying member to reciprocate along the side line direction of the inner side wall of the box body 1, so that the fertilized eggs to be hatched are slowly and uniformly flushed by the water flow in the box body 1 during the reciprocating movement process, and are fully contacted with the dissolved oxygen, and are not accumulated, thereby achieving the bionic hatching effect, the condition controllability is high, and then can effectively improve the hatchability of oozing shrimp embryonated egg, moreover, compare in the attached parent abdominal limb of traditional mode and incubate, owing to adopt hatching apparatus is batch production hatching (adopt artificial incubation means promptly), and the hatching condition is controllable, makes the incubation time shorten greatly, and the seed survival rate improves greatly, and the seed is even unanimous simultaneously.
In an example of the present invention, the supporting member may specifically be a small net cage, and when the supporting member is a small net cage, the small net cage may have a shape adapted to the shape of the lifting frame body 10, and may be placed in the lifting frame body 10, and 50-60 fertilized eggs are placed in each square centimeter of small net cage, and about 60000 fertilized eggs are placed in the small net cage having a bottom area of 30 × 40 centimeters on average.
In another example of the present invention, the specific structural form of the small net cage is not limited in the embodiment of the present invention, for example, the small net cage may be U-shaped, rectangular, triangular, L-shaped, or even flat, and may be adaptively adjusted according to the installation environment.
Further, as a preferred embodiment of the present invention, the bearing member is detachably disposed in the elevator body 10.
In the embodiment of the invention, when in use, the bearing piece (specifically, a small net cage can be adopted) can be taken out of the box body 1, then the fertilized eggs to be incubated are placed, and then the bearing piece is installed in the lifting frame body 10 for use.
In an example of the present invention, the bearing member is detachably disposed in the elevator body 10, and specifically, the detachable connection may be realized by bolts, nuts, buckles, screws, and the like.
Further, as a preferred embodiment of the present invention, the hatching apparatus further includes a flow rate adjusting assembly 12 disposed at one end of the outer side of the lifting frame body 10 facing the discharge port 13, one end of the flow rate adjusting assembly 12 is connected to the lifting frame body 10, the other end of the flow rate adjusting assembly 12 correspondingly faces the discharge port 13, and the flow rate adjusting assembly 12 is configured to move towards the discharge port 13 or away from the discharge port 13 when the lifting frame body 10 reciprocates along an inner side line direction of the inner side wall of the box body 1, so as to close or open the discharge port 13.
In the embodiment of the present invention, the hatching fluid (which may be an existing product, specifically selected according to the requirement, and is not limited herein) for hatching the fertilized eggs is flowed into the box body 1 through the feed inlet 11, meanwhile, a bearing member (specifically, a small net cage may be adopted, or other structures for placing fertilized eggs may be adopted, and is specifically selected according to requirements, and is not limited herein, when the bearing member adopts a small net cage, the shape of the small net cage is adapted to the shape of the lifting frame body 10, and the small net cage may be placed in the lifting frame body 10, and 50-60 fertilized eggs are placed in each square centimeter of the small net cage, and about 60000 fertilized eggs are placed in the small net cage with a bottom area of 30 × 40 centimeters on average) to bear the fertilized eggs to be incubated, and the discharge port 13 is closed or opened when the lifting frame body 10 reciprocates along the side line direction of the inner side wall of the box body 1 through the flow regulating assembly 12.
In an embodiment of the present invention, specifically, when the water level in the tank 1 rises to a certain height, the flow regulating assembly 12 moves upward to separate from the discharge port 13, and further opens the discharge port 13 to discharge the excess water; as the water level in the tank 1 rapidly drops during the discharge, the flow regulating assembly 12 falls back down to contact the discharge port 13, the discharge port 13 is closed, the water level in the box body 1 rises again, the water level in the box body 1 can be kept in a certain range, so that the lifting frame body 10 can reciprocate along the side line direction of the inner side wall of the box body 1 to drive the bearing piece to reciprocate along the side line direction of the inner side wall of the box body 1, so that the fertilized eggs to be incubated are slowly and uniformly flushed by the water flow in the box body 1 in the reciprocating movement process, and are fully contacted with dissolved oxygen without accumulation, thereby achieving the bionic incubation effect, can effectively improve the hatchability of fertilized eggs of the egg-carrying shrimps, and compared with the hatching by attaching to the abdominal limbs of the parent, because the hatching conditions are controllable, the hatching time is greatly shortened, the survival rate of the seedlings is greatly improved, and the seedlings are uniform and consistent.
Further, as a preferred embodiment of the present invention, a floating member 14 is further disposed outside the cage body 10, and the floating member 14 is used for keeping a partial area of the cage body 10 floating on the water surface in the tank 1.
In the embodiment of the present invention, specifically, two opposite side surfaces of the lifting frame body 10 (which may actually adopt a lifting frame) are respectively held by the floating members 14 (which may adopt floating plates), the floating members 14 ensure that about half of the height of the lifting frame body 10 floats on the water surface, and meanwhile, by adding water into the box body 1, when the water level in the box body 1 rises to a certain height, the flow rate adjusting assembly 12 moves upward to separate from the discharge port 13, and further the discharge port 13 is opened to discharge excess water; along with the rapid decline of the water level in the box 1 in the discharge process, the flow control assembly 12 can fall back downwards to contact with the discharge port 13, and then close the discharge port 13, and the water level in the box 1 then rises again, can make the water level in the box 1 keep at certain extent, thereby has realized the lifting frame body 10 along box 1 inside wall sideline direction reciprocating motion, and then has driven the carrier along box 1 inside wall sideline direction reciprocating motion to make the embryonated egg of waiting to hatch receive the scouring of the rivers in the box 1 at the reciprocating motion in-process and swing, reach bionical hatching effect.
Further, as a preferred embodiment of the present invention, the flow rate adjustment assembly 12 includes:
the communicating piece 15 is arranged at one end of the lifting frame body 10 facing the discharge hole 13; and
the connecting piece 18 is sleeved in the communicating piece 15, the communicating piece 15 is used for limiting the connecting piece 18 to be capable of moving in a reciprocating mode in the communicating piece 15 along the side line direction of the inner side wall of the box body 1, one end, facing the discharge port 13, of the connecting piece 18 is provided with a floating piece 17, and the floating piece 17 is used for closing the discharge port 13 when the connecting piece 18 moves to the discharge port 13.
In an embodiment of the present invention, of course, the flow rate adjusting assembly 12 may also adopt a floating plug structure, and the floating plug structure is first installed at the lower end of the elevator body 10 and can move up and down without separation, so that the floating plug structure can move up and down according to the amount of water in the tank 1, thereby opening or closing the discharge port 13.
Further, as a preferred embodiment of the present invention, the flow rate adjusting assembly 12 further includes a blocking member 16, the blocking member 16 is disposed in the elevator body 10, and the blocking member 16 is detachably connected to an end of the connecting member 18 away from the discharge hole 13.
In the embodiment of the present invention, specifically, the blocking member 16 may be a top plate, the top plate is installed at the top end of the connecting member 18 by a threaded connection manner, the floating member 17 may be a hemispherical floating plug, the hemispherical floating plug is connected with the lower end of the connecting member 18, the connecting member 18 vertically shuttles in the connecting member 15 and can freely move up and down, the hemispherical floating plug is located right above the discharge port 13, the flow rate adjusting assembly 12 is pulled up by the lifting frame body 10 when the water level in the tank body 1 rises to a certain height, the hemispherical floating plug floats to the lower end of the connecting member 15, and the discharge port 13 is opened; then, along with the rapid decline of water level, the hemisphere floats the stopper and falls to the bottom and closes discharge gate 13, and the water level rises again in the box 1, can realize making the embryonated egg of waiting to hatch receive the scouring of the rivers in the box 1 at reciprocating motion in-process, reaches bionical hatching effect.
In an example of the present invention, the connecting member 18 may be designed according to the shape of the communicating member 15, for example, when the communicating member 15 is a cylindrical pipe, correspondingly, the connecting member 18 is a round rod, and when the communicating member 15 is a rectangular pipe, correspondingly, the connecting member 18 is a rectangular rod, which is selected according to requirements, and is not limited herein.
Further, as a preferred embodiment of the present invention, the aperture size of the feeding hole 11 is at least twice the aperture size of the discharging hole 13, and the feeding hole 11 is communicated with an output end of a water pump for conveying materials.
Preferably, the caliber of the feed inlet 11 is twice as large as the caliber of the discharge outlet 13.
In the embodiment of the invention, the fertilized eggs of the crayfish are placed into the hatching device and are hatched in the hatching liquid, the hatching liquid is powered by the water pump, and then the hatching liquid is conveyed from the feed port 11, and water circulation is generated in the hatching device.
In an example of the present invention, the box 1 has a structure that an upper half part is a rectangular parallelepiped and a lower half part is a funnel shape.
An embodiment of the present invention further provides a shrimp egg hatching method, which includes the following steps: the fertilized egg to be incubated is born on the bearing piece of the incubation device, the incubation liquid for incubating the fertilized egg is conveyed into the box body 1 through the feed port 11, and simultaneously, the fertilized egg to be incubated is driven to bear the piece to reciprocate along the direction of the inner side line of the box body 1 through the lifting frame body 10 along the direction of the inner side line of the box body 1, so that the fertilized egg to be incubated is flushed by the water flow in the box body 1 in the reciprocating process, and the bionic incubation effect is achieved.
In one example of the present invention, said hatching apparatus is arranged in a hatching plant and the number of hatching apparatuses in said hatching plant is at least one, preferably the number of hatching apparatuses in said hatching plant is 50-100.
As a preferred embodiment of the present invention, the fertilized egg to be hatched is obtained by ripening a shrimp with eggs by mechanical egg removal or soaking egg removal to obtain a peeled fertilized egg which turns brown.
In the embodiment of the invention, the egg removing comprises two modes of mechanical egg removing and soaking egg removing, wherein the mechanical egg removing is to remove egg grains by using a brush and the like; soaking and egg-removing are to immerse the oviferous shrimps to be subjected to egg-removing in an egg-removing device filled with egg-removing liquid, the egg-removing device is a funnel-shaped container at the lower end, an isolating net is arranged on an inner funnel of the egg-removing device, the oviferous shrimps are placed on the isolating net, the egg-removing liquid is added shortly, the fertilized eggs are gradually separated from a parent body, the dropped fertilized eggs are deposited at the bottom of the funnel of the egg-removing device, then egg grains are discharged from the bottom at regular time, and the fertilized eggs are filtered and washed and then sent to an incubation workshop to be incubated by using an incubation device. The filtered egg-removing liquid is fed back to the egg-removing device. The egg-removing liquid is used for digesting protein and mucopolysaccharide between fertilized eggs to free the fertilized eggs for production.
As a preferred embodiment of the invention, the shrimp egg hatching method further comprises the steps of disinfection and the like, industrial large-scale breeding of the crayfish is realized by disinfection (soaking in disinfectant for 15 minutes, the disinfectant can adopt the existing product), in vitro egg removal and artificial hatching of the egg-carrying crayfish, the hatching rate and the fry quality of the crayfish are obviously improved, the hatching device is used for completing hatching of the fertilized eggs of the crayfish in vitro under industrial conditions, the hatching efficiency and the fry survival rate are obviously improved, and accurate hatching is realized. And after the fertilized eggs are completely hatched and emerge, moving the fertilized eggs into a seedling culture pond for artificial culture in the second larva period when the yolk sacs are about to disappear.
In one embodiment of the invention, the egg-carrying shrimps are treated by selecting the egg-carrying shrimps with fertilized eggs which are cultured by parents and synchronously developed, specifically, in the breeding season of the crayfish, the development conditions of the fertilized eggs of the egg-carrying shrimps are periodically checked, and when the fertilized eggs are changed from milk white to brown, the egg-carrying shrimps are caught and disinfected to carry out egg removal and in-vitro hatching; when only the egg-carrying shrimps in different development stages can be collected temporarily, firstly, the egg-carrying shrimps are disinfected in a disinfection pool, the disinfection pool is a cement pool or a canvas pool, a net cage is arranged in the disinfection pool, the egg-carrying shrimps are placed in the net cage, aeration is carried out in the pool, the disinfected egg-carrying shrimp germ cells are classified according to ivory color, brown, eyespots and orange red, the brown germ cells are subjected to egg-removing and in-vitro incubation, the egg-coated shrimps with the eyespots and the orange red are directly classified and normally incubated in the cement pool together with the female shrimps, the female shrimps with the ivory germ cells are ripened, and the egg-removing and in-vitro incubation are carried out when the germ cells become brown.
In another embodiment of the invention, the carrier in the hatching device is a small net cage, 50-60 fertilized eggs are placed in each square centimeter of small net cage, about 50000 and 60000 fertilized eggs are placed in the small net cage with the bottom area of 30 × 40 centimeters on average, 50 hatchers are shared, the temperature of the hatching solution is controlled at 25 ℃, the dissolved oxygen is more than 8 mg/L, and the hatching device is sterilized by ultraviolet rays. After 10 days of incubation, the fertilized eggs are incubated to form membranes, and the newly incubated fertilized eggs are first-age larvae which are regular in specification and strong in physique. And after the fertilized eggs are completely hatched and emerge, moving the fertilized eggs into a seedling culture pond for artificial culture in the period of the second instar larva with the yolk sacs about to disappear. In the hatching process, regular inspection is carried out to ensure the normal operation of the equipment. The result is that one-year young seedlings are obtained and hatched for about 320 ten thousand, and the hatching rate reaches more than 90%.
In another embodiment of the invention, the carrier in the incubation device is a small net cage, about 600 ten thousand fertilized eggs are collected, 50-60 fertilized eggs are placed in each square centimeter of small net cage, about 60000 fertilized eggs are placed in a small net cage with a bottom area of 30 × 40 centimeters on average, 100 incubators are shared, the temperature of the incubation liquid is controlled at 26 ℃, the dissolved oxygen is more than 8 mg/L, and the incubation liquid is sterilized by ultraviolet rays. After 10 days of incubation, the fertilized eggs are incubated to form membranes, and the newly incubated fertilized eggs are first-age larvae which are regular in specification and strong in physique. And after the fertilized eggs are completely hatched and emerge, moving the fertilized eggs into a seedling culture pond for artificial culture in the period of the second instar larva with the yolk sacs about to disappear. In the hatching process, regular inspection is carried out to ensure the normal operation of the equipment. As a result, about 530 ten thousand young seedlings are obtained and hatched, and the hatching rate reaches more than 85%. In addition, the hatchlings of the ovigerous shrimps with brown, eyespot and orange colors are respectively 50-60% without being cultivated by the hatching device.
The embodiment of the invention provides an incubation device, which comprises a box body 1, a feed inlet 11, a discharge outlet 13 and a bearing piece for bearing fertilized eggs to be incubated, wherein a lifting frame body 10 is arranged in the box body 1, the lifting frame body 10 can reciprocate along the sideline direction of the inner side wall of the box body 1, the bearing piece is correspondingly arranged in the lifting frame body 10, the bearing piece can be driven to reciprocate along the sideline direction of the inner side wall of the box body 1 when the lifting frame body 10 moves, so that the fertilized eggs to be incubated are flushed by water flow in the box body 1 in the reciprocating movement process, the bionic incubation effect is achieved, the shrimp egg incubation method is provided based on the incubation device, the fertilized eggs to be incubated are borne on the bearing piece of the incubation device, and the incubation liquid for incubating the fertilized eggs is conveyed into the box body 1 through the feed inlet 11, meanwhile, the lifting frame body 10 reciprocates along the side line direction of the inner side wall of the box body 1 to drive the bearing piece to reciprocate along the side line direction of the inner side wall of the box body 1, so that the fertilized eggs to be incubated are slowly and uniformly flushed by the water flow in the box body 1 in the reciprocating movement process, the fertilized eggs are fully contacted with dissolved oxygen and are not accumulated, the bionic incubation effect is achieved, the condition controllability is high, further effectively improving the hatchability of fertilized eggs of the egg-carrying shrimps, compared with the traditional method of hatching by attaching to the abdominal limbs of the parent, because the hatching device is used for industrial hatching, the hatching condition is controllable, the hatching time is greatly shortened, the survival rate of the offspring seeds is greatly improved, meanwhile, the fry is uniform and consistent, and the problems of low hatching efficiency and low fry survival rate due to the fact that most of the existing crayfish hatching methods need oosperm to be attached to maternal abdominal limbs for hatching.
The hatching device is used for hatching the fertilized eggs separated from the parent in an industrial workshop, and the industrial hatching condition is controllable, so that the hatching time is greatly shortened, the hatching survival rate is greatly improved, large-scale batch production can be realized, the seedlings are uniform and consistent, no germs are generated, the survival rate of the cultured adult shrimps is improved, and the shrimp species supply guarantee is provided for different culture modes. The electric appliances presented in the article can be connected with an external main controller and 220V mains supply, and the main controller can be a conventional known device controlled by a computer and the like.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
While the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (7)
1. The utility model provides an incubation device, includes the box and sets up the feed inlet that is used for the input material on the box, still be provided with the discharge gate that is used for discharging the material on the box, its characterized in that, incubation device still includes:
the bearing piece is positioned in the box body and used for bearing fertilized eggs to be incubated; and
the lifting frame body is arranged in the box body, the lifting frame body can reciprocate along the sideline direction of the inner side wall of the box body, the bearing piece is correspondingly arranged in the lifting frame body, the bearing piece can be driven to reciprocate along the sideline direction of the inner side wall of the box body when the lifting frame body moves, so that fertilized eggs to be incubated are flushed by water flow in the box body in the reciprocating movement process, and a floating piece is also arranged on the outer side of the lifting frame body and used for enabling the lifting frame body to keep a part of area to float on the water surface in the box body;
the hatching device also comprises a flow regulating component, the flow regulating component is arranged at one end, facing the discharge port, of the outer side of the lifting frame body, one end of the flow regulating component is connected with the lifting frame body, the other end of the flow regulating component correspondingly faces the discharge port, and the flow regulating component is used for moving towards the direction of the discharge port or away from the discharge port when the lifting frame body reciprocates along the side line direction of the inner side wall of the box body so as to close or open the discharge port;
the flow regulating assembly comprises a communicating piece arranged at one end of the lifting frame body facing the discharge hole;
and the connecting piece is sleeved in the communicating piece, the communicating piece is used for limiting the connecting piece to be capable of reciprocating in the communicating piece along the side line direction of the inner side wall of the box body, one end, facing the discharge port, of the connecting piece is provided with a floating piece, and the floating piece is used for sealing the discharge port when the connecting piece moves to the discharge port.
2. Hatching apparatus as claimed in claim 1, wherein said carrier is removably arranged in said crane body.
3. The hatching device of claim 1 wherein said flow regulation assembly further comprises a blocking member disposed within said crane body and removably connected to an end of said connector remote from said outlet port.
4. Hatching apparatus as claimed in claim 1, wherein said inlet opening has a bore size at least twice as large as the bore size of said outlet opening, said inlet opening communicating with the output of a water pump for transporting material.
5. A method for hatching shrimp eggs, wherein a hatching apparatus according to any one of claims 1 to 4 is used, and the method for hatching shrimp eggs comprises the following steps: the embryonated egg to be hatched bears on hatching apparatus's the carrier, will be used for hatching the embryonated egg's hatching liquid through the feed inlet and carry to the box in, simultaneously, follow through the lifting frame body the box inside wall sideline direction carries out reciprocating motion and drives it follows to bear the carrier the box inside wall sideline direction reciprocating motion to make the embryonated egg to be hatched receive the scouring of the rivers in the box at reciprocating motion in-process and swing, reach bionical hatching effect.
6. A shrimp egg hatching method as claimed in claim 5 wherein said fertilized egg to be hatched is obtained by ripening a shrimp with eggs by mechanically or by soaking the fertilized egg obtained by egg-taking out until the fertilized egg becomes brown.
7. Use of a method of hatching shrimp eggs as claimed in any one of claims 5 to 6 in the mass production of aquatic products.
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| CN202010814158.8A CN111838034B (en) | 2020-08-13 | 2020-08-13 | Hatching device, shrimp egg hatching method and application |
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| CN202010814158.8A CN111838034B (en) | 2020-08-13 | 2020-08-13 | Hatching device, shrimp egg hatching method and application |
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| CN112136754B (en) * | 2020-11-09 | 2023-07-25 | 中国水产科学研究院淡水渔业研究中心 | Aquatic product selective breeding system, freshwater shrimp selective breeding method and application |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101788068A (en) * | 2010-02-10 | 2010-07-28 | 关胤 | Automatic water replenishing device used for fish tank |
| CN202799895U (en) * | 2012-10-16 | 2013-03-20 | 战立杰 | Automatic water changing fish tank |
| NO20150884A1 (en) * | 2015-07-07 | 2016-11-14 | Fishglobe As | Closed tank for fish farming |
| CN205511646U (en) * | 2016-04-19 | 2016-08-31 | 松阳县永旺家庭农场 | A hatching apparatus for loach breeds |
| CN208609698U (en) * | 2018-08-08 | 2019-03-19 | 中国水产科学研究院长江水产研究所 | One kind being used for automatic-lifting type roe hatching device |
| CN210445329U (en) * | 2019-06-06 | 2020-05-05 | 天津鸿腾水产科技发展有限公司 | Loach hatching device of growing seedlings |
| CN211129411U (en) * | 2019-08-14 | 2020-07-31 | 天津蕴华农业科技发展有限公司 | Pelteobagrus fulvidraco egg hatching device |
| CN212753819U (en) * | 2020-08-13 | 2021-03-23 | 中国水产科学研究院淡水渔业研究中心 | Hatching device |
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