CN111838058B

CN111838058B - Efficient egg hatching device for procambarus clarkii and experimental method

Info

Publication number: CN111838058B
Application number: CN202010750965.8A
Authority: CN
Inventors: 李为; 覃丽蓉; 黄丰; 张堂林; 刘家寿; 王英雄; 苑晶
Original assignee: Institute of Hydrobiology of CAS
Current assignee: Institute of Hydrobiology of CAS
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2022-01-14
Anticipated expiration: 2040-07-30
Also published as: CN111838058A

Abstract

The invention discloses a high-efficiency spawning incubation device for procambarus clarkii and an experimental method, wherein a water inlet is arranged at a higher position of the side surface of one side of a box body, a water outlet is arranged at the bottom of the side surface of the other side of the box body, micropore oxygenation equipment comprises an oxygen inlet pipe and micropore oxygenation bubble strips, the oxygen inlet pipe is arranged outside the box body, the micropore oxygenation bubble strips are arranged at the bottom in the box body, a PVC square pipe is arranged at the bottom in the box body, first storage racks are arranged on the inner walls of the two sides of the PVC square pipe, second storage racks are arranged below the first storage racks on the two sides of the PVC square pipe, and plant fibers are arranged on the first storage racks and the second storage racks; the multi-layer egg-laying hatching device can increase the holding capacity of the egg-laying shrimps in unit area, utilize limited space and expand the activity area of the juvenile shrimps, is convenient to transport and easy to operate, can improve the breeding habitat of the egg-laying shrimps and seedlings and improve the egg hatching rate, the hatching capacity in unit area and the seedling quality.

Description

Efficient egg hatching device for procambarus clarkii and experimental method

Technical Field

The invention relates to the technical field of aquaculture, in particular to a high-efficiency incubation device for laying eggs of procambarus clarkia and an experimental method.

Background

Crayfish in Procambrus of Crustacea order decapod crayfish family, because of the rapid development of crayfish catering industry in recent years, the demand of crayfish market is large, only in Hubei province at present, the offspring demand of crayfish has reached 100 hundred million tails, but the offspring shortage of current market offspring leads to the offspring price being high, the fisherman's breeding cost is high, has restricted the development of crayfish breeding industry;

the main reason for insufficient fry supply of the existing procambarus clarkii fry farm is that the egg-carrying shrimp holding capacity of a unit water body is low, generally not more than 16 tails/m 2, and the hatchability and the emergence rate of the egg-carrying shrimps are low. The procambarus clarkii all move at the bottom of the water body, but the bottom area of one culture place is limited, and the upper layer area in the culture place is almost idle, which wastes resources, in order to primarily solve the problem, most farmers can plant water hyacinth and other plants in the cement pond, so that a way is provided for the procambarus clarkia to utilize more space in the cement pond, but plant a large amount of water hyacinth, the oxygen consumption of the pond at night is overlarge, the bottom of the culture water body is anoxic, the egg mass of the egg-carrying shrimps and the abdomen of the egg-carrying shrimps is anoxic, so that the survival rate, the hatching rate and the like of the parent shrimps are influenced, if only a small amount of aquatic plants are planted, the effect of fully utilizing the culture space can not be achieved, and the phenomenon that the procambarus clarkii individuals attack each other easily occurs during the incubation period of the procymidone eggs of the procambarus clarkii, therefore, the invention provides a high-efficiency incubation device for laying eggs of procambarus clarkia and an experimental method to solve the problems in the prior art.

Disclosure of Invention

Aiming at the problems, the invention aims to provide a high-efficiency egg hatching device and an experimental method for procambarus clarkia, the incubator formed by stacking multiple layers of PVC square pipes can increase the egg shrimp accommodating capacity in unit area, improve the egg hatching rate and the egg hatching capacity in unit area, and the size of the PVC square pipes is suitable for the size of the procambarus clarkia, so that the space can be effectively utilized, and the procambarus clarkia can freely pass; the plant fibers on the first storage rack and the second storage rack can provide larger movement space for the juvenile shrimps, so that a large number of juvenile shrimps can climb to the device conveniently, and the seed culture habitat is improved; the variable-diameter short pipes are conveniently connected with a plurality of incubators to form an open multilayer structure, so that the early-stage transportation, installation and later-stage recovery devices are facilitated; the net piece is arranged in the early stage of incubation, so that the loss of female shrimps can be prevented, the outflow of residual bait and excrement is facilitated, and the loss of young shrimps can be prevented in the later stage of incubation when foreign matters in the flushing box body are washed.

In order to realize the purpose of the invention, the invention is realized by the following technical scheme: the utility model provides a high-efficient ovum hatching apparatus and experimental method of procambarus clarkia, includes box, micropore oxygenation equipment and incubator, the higher position of box one side is equipped with the water inlet, box opposite side bottom is equipped with the delivery port, micropore oxygenation equipment includes oxygen inlet pipe and micropore oxygenation bubble strip, the box outside is equipped with oxygen inlet pipe, the bottom is equipped with micropore oxygenation bubble strip in the box, the incubator includes PVC side pipe, first supporter, second supporter and vegetable fibre, the bottom is equipped with the reducing nozzle stub in the box, reducing nozzle stub both sides are equipped with PVC side pipe, PVC side pipe both sides inner wall is equipped with first supporter, the first supporter below of PVC side pipe both sides inner wall is equipped with the second supporter, be equipped with vegetable fibre on first supporter and the second supporter.

The further improvement lies in that: PVC side pipe top is equipped with the handle, and is adjacent two sets of be equipped with the reducing nozzle stub between the incubator and can dismantle the connection through the reducing nozzle stub, the incubator is piled up by a plurality of PVC side pipe and forms, PVC side pipe is isosceles triangle and piles up, PVC side pipe length width height is 20cm, 10cm respectively, every layer PVC side pipe is connected through the super glue with its upper/lower floor, the PVC side pipe on left/right side.

The further improvement lies in that: the shape of the reducing short pipe is that one end is large and the other end is small, the large end of the reducing short pipe is tightly sleeved with the end part of the PVC square pipe, and the small end of the reducing short pipe is connected with the other group in an embedded manner.

The further improvement lies in that: the water outlet is provided with a net piece, the side length of the mesh of the net piece in the early stage of incubation is 1.5cm, and the side length of the mesh of the net piece in the late stage of incubation is 0.3 cm.

The further improvement lies in that: first supporter and second supporter pass through the super glue and PVC side pipe both sides inner wall is fixed, first supporter and second supporter constitute by four short slabs respectively, the plant fiber passes through the super glue horizontal layering with the four short slabs of first supporter and second supporter and fixes between the short slab, first supporter short slab length width is 5cm and 2cm, second supporter short slab length width is 2cm and 2cm, first supporter sets up and manages bottom 8cm department apart from PVC side, the second supporter sets up and manages bottom 6cm department apart from PVC side.

The further improvement lies in that: the bottom of the box body is arranged in an inclined manner towards the water outlet, and the inclination angle is not more than 10 degrees.

An experiment method for hatching the efficient spawning of procambarus clarkia comprises the following steps:

putting the female procambarus clarkii into the device;

step two, uniformly sprinkling enough feed in the whole pond every day, changing water once every 72 hours, and flowing residual bait and excrement to a water outlet to be discharged out of the box body through the inclined angle of the bottom of the box body and the water flow of water inlet and drainage, wherein the water changing amount is 1/3 of the volume of the box body;

step three, when all the juvenile shrimps are out of the film, catching the parent shrimps which are already hatched with eggs, transferring the parent shrimps into a sterilized cement pond for reinforced cultivation, and selling the parent shrimps;

and step four, continuously carrying out primary cultivation on the hatched young shrimps in the device.

The invention has the beneficial effects that: the incubator formed by stacking the multiple layers of PVC square pipes can increase the accommodation capacity of the egg-carrying shrimps in unit area, improve the hatching rate of eggs and the hatching capacity of the unit area, and the size of the PVC square pipes is suitable for the size of the egg-carrying shrimps, so that the space can be effectively utilized, and the egg-carrying shrimps can freely pass through; the plant fibers on the first storage rack and the second storage rack can provide larger movement space for the juvenile shrimps, so that a large number of juvenile shrimps can climb to the device conveniently, and the seed culture habitat is improved; the variable-diameter short pipes are conveniently connected with a plurality of incubators to form an open multilayer structure, so that the early-stage transportation, installation and later-stage recovery devices are facilitated; the net piece is arranged in the early stage of incubation, so that the loss of female shrimps can be prevented, the outflow of residual bait and excrement is facilitated, and the loss of young shrimps can be prevented in the later stage of incubation when foreign matters in the flushing box body are washed.

Drawings

FIG. 1 is a main view of the present invention.

Fig. 2 is a front view of the incubator of the present invention.

Fig. 3 is a side view of an incubator of the present invention.

FIG. 4 is a view showing the structure of the PVC square tube of the present invention.

Wherein: 1. a box body; 2. a microporous oxygen increasing device; 3. an incubator; 4. a water inlet; 5. a water outlet; 6. an oxygen inlet pipe; 7. micro-porous oxygen-increasing bubble strips; 8. PVC square tubes; 9. a variable-diameter short pipe; 10. a first shelf; 11. a second shelf; 12. plant fibers; 13. a handle; 14. and (3) a mesh.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

Example 1

According to fig. 1, 2, 3 and 4, the embodiment provides a high-efficiency hatching device for hatching eggs of procambarus clarkia and an experimental method, comprising a box body 1, a micropore oxygenation device 2 and an incubator 3, wherein a water inlet 4 is arranged at a higher position of one side of the box body 1, a water outlet 5 is arranged at the bottom of the other side of the box body 1, the micropore oxygenation device 2 comprises an oxygen inlet pipe 6 and a micropore oxygenation bubble strip 7, the oxygen inlet pipe 6 is arranged outside the box body 1, the micropore oxygenation bubble strip 7 is arranged at the bottom of the box body 1, the incubator 3 comprises a PVC square pipe 8, a first article carrier 10, a second article carrier 11 and plant fibers 12, a reducing short pipe 9 is arranged at the bottom of the box body 1, PVC square pipes 8 are arranged at two sides of the reducing short pipe 9, first article carriers 10 are arranged on inner walls of two sides of the PVC square pipe 8, the second article carrier 11 is arranged below the first article carrier 10 on inner walls of two sides of the PVC square pipe 8, plant fibers 12 are arranged on the first storage rack 10 and the second storage rack 11, the length, the width and the height of the box body 1 are respectively 200cm, 100cm and 60cm, and the interval distance between the micropore aeration bubble strips 7 at the bottom of the box body 1 is 50 cm.

PVC square pipe 8 top is equipped with handle 13, and is adjacent two sets of be equipped with reducing nozzle stub 9 between the incubator 3 and can dismantle the connection through reducing nozzle stub 9, singly incubator 3 is isosceles triangle by a plurality of five-row PVC square pipe 8 (except the topmost layer) and piles up, and every layer has two PVC square pipe 8, PVC square pipe 8 length and width height is 20cm, 10cm respectively, every layer PVC square pipe 8 with its upper/lower floor, the PVC square pipe 8 on a left/right side passes through the super glue and connects.

The shape of the reducing short pipe 9 is that one end is big and the other end is small, the big one end of the reducing short pipe 9 is closely sleeved with the end of the PVC square pipe 8, the small one end of the reducing short pipe 9 is connected with the other group by embedding the end of the PVC square pipe 8.

The water outlet 5 is provided with a net piece 14, the side length of the mesh of the net piece 14 in the early stage of incubation is 1.5cm, and the side length of the mesh of the net piece 14 in the later stage of incubation is 0.3 cm.

First supporter 10 and second supporter 11 are through the powerful glue with 8 both sides inside fixes in the square pipe of PVC, first supporter 10 and second supporter 11 comprise four short slabs respectively, plant fiber 12 passes through the powerful glue horizontal layering with the four short slabs of first supporter 10 and second supporter 11 and fixes between the short slab, first supporter 10 short slab length width is 5cm and 2cm, second supporter 11 short slab length width is 2cm and 2cm, first supporter 10 sets up 8cm departments in 8 bottoms in the square pipe of PVC, second supporter 11 sets up 6cm departments in 8 bottoms in the square pipe of PVC.

The bottom of the box body 1 is arranged in an inclined way towards the water outlet 5, and the inclined angle is not more than 10 degrees.

The device is cleaned before use, the device is soaked in low-concentration potassium permanganate solution for one day for disinfection, the female shrimps are washed for more than 3 times by clear water, then soaked in seedling raising water for 1 day, the cleaned female shrimps are drained for standby use, when the crayfishes are mated in 8 and 9 months, the female shrimps are placed into the device, sufficient feed is uniformly sprayed into the whole pool every day, the water is changed once every 72 hours, the water is changed into 1/3 according to the volume of the box body 1, residual feed and excrement are washed to a water outlet 5 and discharged out of the device, after the young shrimps are hatched, high-solubility egg yolk and other high-protein baits can be fed into the box body 1, when all the young shrimps have membranes and can be separated from the parent, the parent shrimps which have been hatched can be caught and transferred to a cement pool which is subjected to disinfection treatment for intensive cultivation, and then the young shrimps are sold, the hatched young shrimps can be continuously raised in the incubator to avoid stress and death caused by environmental changes.

After the primary cultivation of shrimp larvae is finished, PVC square tube 8 connected in two incubators 3 is torn, handle 13 application of force is held, make incubator 3 rock in aqueous and force the shrimp larvae to leave PVC square tube 8 and get into the water, then remove incubator 3 from, wash, stay to use next time, the shrimp larvae can be caught, sell, also can continue to breed to the adult and sell again.

Example 2

The efficient hatching device for laying eggs of procambarus clarkii of the present embodiment is the same as the device described in embodiment 1.

The incubator can be applied to a cement pond or a pond, the number of layers and the number of rows of PVC square pipes 8 of a single incubator 3 are designed according to the height and the width of the cement pond or the pond, the multilayer PVC square pipes 8 in the incubator 3 are assembled by strong glue, plant fibers 12 with proper weight are put on a first storage rack 10 and a second storage rack 11 for fixing, the number of the incubators 3 put in a culture site is selected according to the area of the cement pond or the pond, the incubators 3 are connected through the reducing short pipes 9, the inner walls and the outer walls of the reducing short pipes 9 can be coated with the strong glue, the connection strength between the incubators 3 is enhanced, long ropes are connected to handles at the top ends of the PVC square pipes 8, and the incubators 3 are slowly put in the culture site through the long ropes.

Put into breeding the pond with female shrimp, the full pond of every day is evenly spilled the fodder of capacity, and after the primary cultivation of juvenile shrimp was ended, gradually pulled away the surface of water with a plurality of incubators 3 through the long rope of connecting on hand, washs, stays to wait to use next time, and juvenile shrimp accessible ground cage catches, sells.

According to the efficient egg hatching device and the experimental method for the procambarus clarkia, the incubator 3 formed by stacking the multiple layers of PVC square pipes 8 can increase the egg shrimp accommodation capacity per unit area, the egg hatching rate and the egg hatching capacity per unit area are improved, the size of the PVC square pipes 8 is suitable for the size of the egg shrimp, the space can be effectively utilized, and the egg shrimp can freely pass through; the plant fibers 12 on the first shelf 10 and the second shelf 11 can provide a larger moving space for the juvenile shrimps, so that a large number of juvenile shrimps can climb on the shelf conveniently, and the seed culture habitat is improved; the hatchers 3 are conveniently connected through the reducing short pipes 9 to form an open multilayer structure, so that the early-stage transportation, installation and later-stage recovery devices are facilitated; the net piece 14 can prevent the loss of female shrimps in the early stage of incubation, so that the residual bait and excrement can flow out conveniently, and the loss of young shrimps can be prevented in the late stage of incubation when foreign matters in the box body 1 are washed.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a high-efficient ovum hatching apparatus that embraces of procambarus clarkia which characterized in that: comprises a box body (1), micropore oxygenation equipment (2) and an incubator (3), wherein a water inlet (4) is arranged at a higher position of one side of the box body (1), a water outlet (5) is arranged at the bottom of the other side of the box body (1), the micropore oxygenation equipment (2) comprises an oxygen inlet pipe (6) and a micropore oxygenation bubble strip (7), the oxygen inlet pipe (6) is arranged outside the box body (1), the micropore oxygenation bubble strip (7) is arranged at the bottom in the box body (1), the incubator (3) comprises a PVC square pipe (8), a first storage rack (10), a second storage rack (11) and plant fibers (12), the PVC square pipe (8) is arranged at the bottom in the box body (1), the first storage rack (10) is arranged on the inner walls of two sides of the PVC square pipe (8), the second storage rack (11) is arranged below the first storage rack (10) on the inner walls of two sides of the PVC square pipe (8), plant fibers (12) are arranged on the first shelf (10) and the second shelf (11);

the handle (13) is arranged above the PVC square pipes (8), the reducing short pipes (9) are arranged between every two adjacent groups of the incubators (3) and detachably connected through the reducing short pipes (9), each incubator (3) is formed by stacking a plurality of PVC square pipes (8), the PVC square pipes (8) are stacked in an isosceles triangle shape, the length, the width and the height of each PVC square pipe (8) are respectively 20cm, 10cm and 10cm, and each layer of PVC square pipe (8) is connected with the PVC square pipes (8) on the upper layer, the lower layer, the left side and the right side through strong glue;

the reducing short pipes (9) are large in one end and small in the other end, the large ends of the reducing short pipes (9) are tightly sleeved with the ends of the PVC square pipes (8), and the small ends of the reducing short pipes (9) are connected with the ends of the other group of PVC square pipes (8) in an embedded mode;

first supporter (10) and second supporter (11) are fixed through powerful glue and PVC side pipe (8) both sides inner wall, first supporter (10) and second supporter (11) constitute by four short slabs respectively, plant fiber (12) are fixed between the short slab through powerful glue horizontal layering with the four short slabs of first supporter (10) and second supporter (11), first supporter (10) short slab length width is 5cm and 2cm, second supporter (11) short slab length width is 2cm and 2cm, first supporter (10) sets up in 8cm department apart from PVC side pipe (8) bottom, second supporter (11) set up in 6cm department apart from PVC side pipe (8) bottom.

2. The efficient hatching device for the spawning of the procambarus clarkii according to claim 1, wherein: the water outlet (5) is provided with a net piece (14), the side length of the mesh of the net piece (14) in the early stage of incubation is 1.5cm, and the side length of the mesh of the net piece (14) in the late stage of incubation is 0.3 cm.

3. The efficient hatching device for the spawning of the procambarus clarkii according to claim 1, wherein: the bottom of the box body (1) is arranged in an inclined manner towards the water outlet (5), and the inclined angle is not more than 10 degrees.

4. The method for the efficient incubation experiment of the eggs of the procambarus clarkii according to claim 1, which is characterized by comprising the following steps:

putting the female procambarus clarkii into the device;

step two, uniformly sprinkling enough feed in the whole pond every day, changing water every 72 hours, and flowing residual bait and excrement to a water outlet (5) through the inclined angle of the bottom of the box body (1) and water inflow and drainage to be discharged out of the box body (1), wherein the water changing amount is 1/3 of the volume of the box body (1);