CN212368182U

CN212368182U - Industrial crayfish breeding pond

Info

Publication number: CN212368182U
Application number: CN202020614738.8U
Authority: CN
Inventors: 王大鹏; 陆专灵; 唐章生; 曾华忠; 卢智发; 余艳玲; 赵文彬
Original assignee: Guangxi Academy of Fishery Sciences
Current assignee: Guangxi Academy of Fishery Sciences
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-01-19
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a pond is bred in cray batch production, include: the system comprises a bottom layer pool and an upper layer pool, wherein the upper layer pool is stacked on the upper part of the bottom layer pool and covers a part of area of the bottom layer pool, liquid is not communicated between the upper layer pool and the bottom layer pool, the side wall of the upper layer pool is provided with an opening, and the water depth of the upper layer pool is smaller than that of the bottom layer pool; and the upper end of the slope is connected to the opening, and the lower end of the slope extends to a position below the water surface of the bottom layer pool. Based on the utility model provides a crayfish batch production breeds pond no longer need select the ovum shrimp with the help of the manual work, has avoided appearing loudly selecting or falling the condition of ovum. The utility model discloses can improve the armful egg volume of crayfish, save the breed of breeding the shrimp, save the cost of growing seedlings.

Description

Industrial crayfish breeding pond

Technical Field

The utility model relates to a crayfish breeds technical field, especially relates to a crayfish batch production breeds pond.

Background

At present, the main breeding mode of crayfishes is pond breeding or paddy field breeding, and the crayfishes have the advantages of large foundation area and low management intensity. But also has more problems, firstly, the size of the fries on the market is large, the shrimp fries with the weight of more than 4g can be caught by adopting a cage catching mode, the catching rate is not high, and the fries need to be repeatedly placed in cages for long-term catching; secondly, the breeding time is long, the adult shrimps grow seedlings intermittently from 6 months to 11 months, and then the seedlings grow continuously from 11 months to 3 months in the next year; thirdly, the survival rate of the seedlings is low, and the rate of emergence is lower than 30 percent in the growth process due to self-residual, predation of natural enemies, catching damage and the like. In the industrial breeding mode, the seedlings can be captured in batches and fished out of the pool after leaving the parent body for about 10 days, the specifications of the seedlings are regular, the rate of emergence can reach over 80 percent, the autumn seedlings can be cultivated in winter in subtropical regions, and the off-season marketing is realized, so that the method has a good industrial prospect. At present, the industrialized breeding research of crayfish has been carried out in Hubei province and Jiangsu province, the crayfish parents are subjected to intensive cultivation and concentrated egg-holding, the matched parent crayfish is placed in a parent cultivation pool 30 days before 9 months, the cultivation density of the parents is 40-50 per square meter, and the egg-holding rate of female crayfish can reach 60-70% after the crayfish is subjected to intensive cultivation for 30-40 days by adopting special feed. And putting the female shrimps with the eggs into a breeding pool for breeding. However, the above-mentioned industrial breeding method still has several problems: firstly, the gonad development stage of the crayfish is difficult to accurately judge, the mating breeding shrimps can be cultured in a workshop, the female shrimps with the eggs held in the belly are selected and placed in a seedling raising pool to obtain the synchronously hatched fries, but the accurate selection of the eggs-holding shrimps needs higher technical experience and labor intensity, otherwise, the egg-holding shrimps are missed to be selected or the egg falling phenomenon is caused; and secondly, the crayfish has low egg holding amount, a large amount of breeding shrimps are needed, the space occupied by breeding the breeding shrimps is more than half, and the breeding cost is doubled.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages which will be described later.

An object of the utility model is to provide a pond is bred in crayfish batch production, it does not need the manual work to select the armful egg shrimp, avoids causing the hourglass to select the armful egg shrimp or fall the ovum, improves the breed efficiency.

In order to achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an industrial crayfish breeding pond, including:

the system comprises a bottom layer pool and an upper layer pool, wherein the upper layer pool is stacked on the upper part of the bottom layer pool and covers a part of area of the bottom layer pool, liquid is not communicated between the upper layer pool and the bottom layer pool, the side wall of the upper layer pool is provided with an opening, and the water depth of the upper layer pool is smaller than that of the bottom layer pool; and

a ramp having an upper end coupled to the opening and a lower end extending below the surface of the water in the bottom pond.

Preferably, in the industrial crayfish breeding pond, the slope is detachably combined with the upper pond and the lower pond.

Preferably, in the industrial crayfish breeding pond, the bottom pond is rectangular, the length-width ratio is 2-2.5: 1, the depth is 80cm, and the water depth is 50 cm.

Preferably, in the industrial crayfish breeding pond, the area of the upper pond is 60-80% of that of the bottom pond, and the water depth of the upper pond is 30 cm.

Preferably, in the industrial crayfish breeding pond, a first front side wall of the upper layer pond is provided with a first water inlet, and a first rear side wall of the upper layer pond is provided with a fry collecting opening; the opening is disposed on the first front sidewall of the upper well.

Preferably, in the industrial crayfish breeding pond, the outer side of the fry collecting port is connected with a net cage.

Preferably, in the industrial crayfish breeding pond, the second front side wall of the bottom pond is provided with a second water inlet, and the second rear side wall of the bottom pond is provided with a second water outlet.

Preferably, in the industrial crayfish breeding pond, a trench is correspondingly arranged outside the second water outlet.

Preferably, in the industrial crayfish breeding pond, a heating pipe and a micropore oxygenation device are arranged in the bottom layer pond.

Preferably, in the industrial crayfish breeding pond, the micropore oxygenation device is arranged in the bottom pond, and aquatic weeds are not thrown in the bottom pond.

The utility model discloses at least, include following beneficial effect:

(1) the utility model provides a pond is bred in cray batch production, including bottom pond and upper strata pond, the range upon range of setting in the upper portion in bottom pond in upper strata pond covers some regions in bottom pond, and liquid does not communicate between upper strata pond and the bottom pond in addition, and the lateral wall in upper strata pond has the opening, and its depth of water is less than the depth of water in bottom pond, and the upper end on slope links up to the opening, and the lower extreme extends to below the surface of water in bottom pond. The bottom pond is used for breeding mated female shrimps, the shrimps without eggs inhabit in the deep water at the bottom and are shielded by the upper pond, and the shrimps with eggs like shallow water can climb the slope or enter the shallow water area of the upper pond. Therefore, based on the utility model provides a crayfish batch production breeds pond no longer need select the ovum shrimp with the help of the manual work, has avoided appearing loudly to select or fall the condition of ovum.

(2) The utility model discloses set up the heating pipe in the bottom pond, the accessible rapid heating up stimulates crayfish mating and embraces the ovum. The utility model discloses the lateral wall has still designed the second water inlet before the second in bottom pond, and the lateral wall has designed the second outlet behind the second, trades water to the bottom pond through second water inlet and second outlet, comes amazing crayfish mating and embraces the ovum. Therefore, the utility model discloses can improve the armful egg volume of crayfish, save the breed of breeding the shrimp, save the cost of growing seedlings.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of an industrial crayfish breeding pond of the present invention;

fig. 2 is a sectional view taken along line a-a of fig. 1.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

As shown in fig. 1 and fig. 2, the utility model provides a crayfish batch production breeds pond, include: the device comprises a bottom layer pool 2 and an upper layer pool 1, wherein the upper layer pool 1 is stacked on the upper part of the bottom layer pool 2 and covers a part of area of the bottom layer pool 2, liquid is not communicated between the upper layer pool and the bottom layer pool, the side wall of the upper layer pool 1 is provided with an opening 4, and the water depth of the upper layer pool is less than that of the bottom layer pool; and a slope 3 having an upper end coupled to the opening and a lower end extending below the water surface 11 of the bottom pond.

The bottom pond 2 is mainly used for breeding mated female shrimps, and the female shrimps can be put in time when the density is insufficient. The control is preferably 12 female shrimps per square meter. In the season lacking natural mating female shrimps, the ratio of 1: 2 putting male shrimps and female shrimps, heating to 30 ℃ by using a heating pipe, draining the bottom pond water, and adding new water to stimulate mating.

When daily management is carried out, water in the bottom pond 2 floods the slope, the ovigerous shrimps like shallow water can enter a shallow water area (namely, an upper pond) along the slope, and the ovigerous shrimps are like to inhabit in deep water at a lower layer and are shielded by the upper pond (namely, a part of area covered by the upper pond on the bottom pond). The slope is checked periodically every day, and if oviparous shrimps (characterized by slightly curling body) are found, the shrimps are picked up in the upper pond. Based on the embodiment of the utility model provides a breed pond, the armful egg shrimp can climb out and get into to the upper pond from the bottom pond by oneself, no longer need the manual work to select the armful egg shrimp, has avoided hourglass to select or has fallen the ovum, has improved breed efficiency.

In a preferred embodiment, in the industrial crayfish breeding pond, the slope 3 is detachably combined with the upper pond 1 and the lower pond 2.

The slope can be detached from the upper layer pool and the lower layer pool as required for replacement or cleaning.

Specifically, the upper end of the slope can be connected to the opening position of the upper-layer tank through a pin, and other connection modes can also be adopted. The lower end of the slope can abut against the bottom of the bottom layer pool.

In a preferred embodiment, in the industrial crayfish breeding pond, the bottom pond 2 is rectangular, the length-width ratio is 2-2.5: 1, the depth is 80cm, and the water depth is 50cm, so that the crayfish cannot climb out to escape.

In a preferred embodiment, in the industrial crayfish breeding pond, the area of the upper pond 1 is 60-80% of the area of the bottom pond 2, and the water depth of the upper pond 1 is 30 cm.

The egg-carrying shrimps can climb up the slope from the deep water area of the bottom pond and enter the shallow water area of the upper pond.

In a preferred embodiment, in the industrial crayfish breeding pond, a first front side wall 10 of the upper layer pond 1 is provided with a first water inlet 6, and a first rear side wall is provided with a seedling receiving opening 5; the opening 4 is provided on the first front side wall of the upper tank.

In a preferred embodiment, in the industrial crayfish breeding pond, a net cage is connected to the outer side of the fry collecting opening 5.

The seedling collecting port of the upper layer pool is simultaneously used as a first water discharging port of the upper layer pool. After hatching the fries on the upper layer, the first water outlet of the upper layer pond is opened, the fries are harvested by the net cage, and water can enter through the first water inlet again after harvesting.

In a preferred embodiment, in the industrial crayfish breeding pond, the second front side wall of the bottom pond 2 is provided with a second water inlet 9, and the second rear side wall is provided with a second water outlet 8.

At the in-process of breeding the crayfish, drain the water in the bottom pond through the second outlet, rethread second water inlet is intake, comes to trade the water operation in the bottom pond, can stimulate the mating of crayfish and embrace the ovum, and then improves and embraces the ovum volume, reduces the breeding shrimp and breeds, reduces the cost of growing seedlings.

In a preferred embodiment, in the industrial crayfish breeding pond, a trench is correspondingly arranged outside the second water outlet 8.

The waste water can be discharged into the trench through the second water discharge port.

In a preferred embodiment, in the industrial crayfish breeding pond, a heating pipe 7 and a micropore oxygenation device are arranged in the bottom pond 2.

Set up the heating pipe in the bottom pond, the accessible rapid heating up stimulates crayfish mating and embraces the ovum, and then improves the ovum volume of crayfish, saves the breed of breeding the shrimp, saves the cost of growing seedlings.

In a preferred embodiment, in the industrial crayfish breeding pond, a micropore oxygenation device is arranged in the bottom pond 2, and aquatic weeds are not thrown in the micropore oxygenation device. Aquatic weeds are not put in the embodiment, the hatching of the oviferous shrimps in the aquatic weeds is avoided, the oxygen content in the bottom pond is improved through the micropore oxygenation device, and the growth requirement of the crayfishes is met.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the applications listed in the specification and the examples. It can be applicable to various and be fit for the utility model discloses a field completely. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. The industrial crayfish breeding pond is characterized by comprising:

2. The industrial crayfish breeding pond as claimed in claim 1, wherein the slope is detachably combined with both the upper pond and the lower pond.

3. The industrial crayfish breeding pond as claimed in claim 1 or 2, wherein the bottom pond is rectangular, has an aspect ratio of 2-2.5: 1, a depth of 80cm and a water depth of 50 cm.

4. The industrial crayfish breeding pond as claimed in claim 3, wherein the upper pond area is 60% to 80% of the bottom pond area, and the water depth of the upper pond is 30 cm.

5. The industrial crayfish breeding pond as claimed in claim 4, wherein the first front side wall of the upper pond is provided with a first water inlet, and the first rear side wall of the upper pond is provided with a seedling receiving opening; the opening is disposed on the first front sidewall of the upper well.

6. The industrial crayfish breeding pond as claimed in claim 5, wherein a net cage is connected to the outer side of the fry collecting opening.

7. The industrial crayfish breeding pond of claim 3 wherein the bottom pond has a second water inlet opening in a second front side wall and a second water outlet opening in a second rear side wall.

8. The industrial crayfish breeding pond as claimed in claim 7, wherein a trench is correspondingly arranged outside the second water outlet.

9. The industrial crayfish breeding pond as claimed in claim 1, wherein a heating pipe is arranged in the bottom pond.

10. The industrial crayfish breeding pond of claim 1, wherein the bottom pond is internally provided with a micropore oxygenation device, and aquatic weeds are not thrown in the bottom pond.