CN105613387A - Device and method for incubating zygotes of fishes - Google Patents

Abstract

The invention belongs to the field of fish breeding, and mainly relates to a hatching device for fertilized fish eggs. The hatching device includes a hatching tank, the bottom of the hatching tank is provided with a first water inlet, the top of the hatching tank is provided with a second water inlet, and the hatching tank is provided with an artificial fish nest for collecting fish eggs. The second water inlet is connected with a shower for sprinkling water into the hatching tank. The first water inlet at the bottom of the hatching pool supplies water from bottom to top to the hatching pool, so that the water body in the hatching pool can always be in a flowing state, ensuring sufficient oxygen in the water body, preventing the fish eggs from anoxia due to sticking together, and ensuring Fish eggs hatch normally, and the second water inlet sprinkles water on the water surface of the hatching pool from top to bottom through the shower. The shower structure can slow down the momentum of the water while meeting the water exchange rate and ensuring the water flow. , to avoid the flow of water breaking through fertilized eggs and/or freshly emerged fry.

Description

A fish fertilized egg hatching device and hatching method

technical field

The invention belongs to the field of fish breeding, and in particular relates to a hatching device and a hatching method for fertilized fish eggs.

Background technique

Saprolegniasis is widely found in freshwater or brackish waters and moist soils all over the world. It is a kind of common mold that saprophytes on dead organic matter. In the process of fish rearing, fish eggs are very easy to encounter Saprolegniasis infection and get Saprolegniasis. The traditional method of controlling saprolegniasis in fish is to control the hatching temperature of fish eggs, but this method is not suitable for the eggs of sandfish with a long incubation period. Channa is a small fish with very delicious meat. The hatching cycle of the eggs of this fish is usually 28-30 days. The long hatching period leads to the infection of the fish eggs before hatching. Once infected with saprolegniasis, usually once infected with saprolegniasis, the fish eggs are basically lost, causing great economic losses to farmers. In addition, the fish eggs of the sand pond snakehead are sticky eggs, allowing them to hatch naturally in the pond, the fish eggs are very easy to be bonded together and cause hypoxia, and eventually mildew and rot.

Contents of the invention

In order to solve the above technical problems, the present invention provides a hatching device and a hatching method for fertilized fish eggs.

In order to realize the purpose of the present invention, the present invention has adopted following technical scheme:

A hatching device for fertilized fish eggs, comprising a hatching tank, the bottom of the hatching tank is provided with a first water inlet, the top of the hatching tank is provided with a second water inlet, and the hatching tank is provided with an artificial fish nest.

In a further technical solution, the artificial fish nest includes a first tile and a second tile covered above the first tile, the first tile and the second tile are arc-shaped structures, and the first The inner arc surfaces of the tiles and the second tiles are arranged opposite to each other, and the inner arc surfaces of the first tiles form a collection surface for fish roe.

In a further technical solution, the hatching tank is barrel-shaped and has a semi-elliptical cross-section in the height direction, and the inside of the hatching tank is provided with a grid support fixed on the wall of the barrel and used to support the artificial fish nest.

In a further technical solution, the second water inlet is connected with a shower for sprinkling water into the hatching tank.

In a further technical solution, both the first water inlet and the second water inlet communicate with the main water inlet pipeline.

A further technical solution, the device also includes a square pool body, the bottom of the square pool body is provided with a barrel-shaped cavity, the barrel-shaped cavity constitutes the hatching pool, and the side wall of the square pool body is provided with a water outlet , the square pool body is formed by pouring concrete.

A method for hatching fertilized fish eggs, comprising a cleaning process of hatching water, using the cleaned water to hatch fish eggs, the hatching process is carried out in the hatching pool, and the bottom of the hatching pool is set There is a first water inlet, a second water inlet is provided above the hatching tank, and an artificial fish nest for collecting fish eggs is arranged in the hatching tank;

The cleaning process of the hatching water comprises the following steps:

a, drop niclosamide into the water body in the pond, and the input amount of niclosamide per meter of water depth in every mu of pond is controlled at 2-3kg;

b. After 7-10 days, then add copper sulfate to the water body in the pond, and the input amount of copper sulfate per mu of pond per meter of water depth is controlled at 0.75-1.25kg;

After c, 4-5 days, drop chlorine dioxide into the water body in the pond again and carry out disinfection, the input amount of chlorine dioxide is 150-200g;

After d, 2 days, utilize above-mentioned water body to hatch fish eggs;

In a further technical solution, the artificial fish nest includes a first tile and a second tile covered above the first tile, the first tile and the second tile are arc-shaped structures, and the first The inner arc surfaces of the tiles and the second tiles are relatively arranged, and the inner arc surfaces of the first tiles form a collection surface for fish eggs; the hatching pool is barrel-shaped and has a semi-elliptical section in the height direction, The interior of the hatching tank is provided with a grid support fixed on the barrel wall and used to support the artificial fish nest.

Further technical scheme, the depth of water per meter of pond per mu, the preferred input amount of niclosamide in said step a is 2.5kg; the preferred input amount of copper sulfate in said step b is 1kg; the input amount of chlorine dioxide in said step c The input amount is preferably 180g.

In a further technical solution, the second water inlet is connected with a shower for sprinkling water into the hatching tank; both the first water inlet and the second water inlet are communicated with the main water inlet; the hatching method also includes a square pool Body, the bottom of the square pool body is provided with a barrel-shaped cavity, the barrel-shaped cavity constitutes the hatching pool, the side wall of the square pool body is provided with a water outlet, and the square pool body is made of concrete .

The beneficial effects of the present invention are:

(1) In the present invention, the artificial fish nest can effectively collect fish eggs by simulating the spawning environment of fish. After the fish lay eggs on the artificial fish nest, the fish eggs adhere to the artificial fish nest, and in the hatching pond For hatching, the first water inlet at the bottom of the hatching tank supplies water from bottom to top, so that the water body in the hatching tank can always be in a flowing state, ensuring sufficient oxygen in the water body, and preventing the fish eggs from anoxia due to sticking together , to ensure the normal hatching of fish eggs. In addition, the second water inlet sprinkles water on the water surface of the hatching tank from top to bottom. On the one hand, the second water inlet can further strengthen the circulation of the water body in the hatching tank, and in addition, it can meet the needs of fish. The habit of flushing water can promote the growth and development of fish, and effectively improve the efficiency of spawning and hatching.

(2) The method of the present invention can kill pathogens from the water source, and the hatching rate is high when using the treated water body to hatch fish eggs, effectively solving the problem of saprolegniasis in the hatching process of fish eggs. The niclosamide can kill the snails in the pond, because the snails are the main host of germs and worm eggs, killing the snails can effectively prevent the impact of germs and worm eggs on the hatching of fish eggs; the copper sulfate further affects the water body. After treatment, copper sulfate can kill insects and algae; the chlorine dioxide can further disinfect the water body. The above-mentioned treatment steps are indispensable. The water body treated by this method is not only suitable for the hatching of fish eggs, but also completely eliminates the situation that the fish eggs are infected with saprolegniasis.

(3) the present invention has all carried out strict control to the input amount of corresponding medicine in step a, b, c and the treatment time of water body by medicine, and the input amount of medicine, treatment time reach to prevent saprolegniasis from taking place in satisfying water body treatment Under the premise, it also avoids the negative impact that too much medicine may have on water quality.

(4) In the present invention, the artificial fish nest is composed of a first tile and a second tile, and the inner arc surfaces of the first tile and the second tile are relatively arranged to form a passage for fish to pass through, and the fish enters the passage Spawning can be carried out on the inner curved surface of the first tile, that is, the collection surface. The structure of the tile itself has a certain number of micropores, which can further enhance the water and oxygen content in the hatching environment of fish eggs, and effectively improve hatchability of fish eggs. Especially for fish that lay sticky eggs, such as Channa nama, the tiles also have a certain degree of adhesion to fish eggs due to their microporous structure. egg efficiency.

(5) The grid support in the present invention can ensure the penetration and circulation of the water body below and above the grid support in the hatching tank; Water flow breaks through fertilized eggs and/or freshly emerged fry.

(6) The structure of the hatching pond in the present invention is beneficial to the circulation of the water body in the hatching pond, and effectively reduces the circulation resistance of the water body.

(7) The square pool body described in the present invention is formed by pouring concrete, and the structure is simple and easy to process; after the fry are hatched in addition, the fry can swim out through the water outlet. Fish fry can be collected, which is convenient to use.

Description of drawings

Fig. 1 is the structural representation of hatching pool among the present invention.

Fig. 2 is a schematic diagram of the three-dimensional structure of the hatching pond in the present invention.

Fig. 3 is the structural representation of artificial fish nest among the present invention.

The specific meanings of the marks in the accompanying drawings are as follows:

1-Square tank body 10-Hatch tank 11-First water inlet 12-Second water inlet

13-Grill support 14-Shower 15-General water inlet pipe 16-Water outlet 20-Artificial fish nest

21 - first tile 21a - collection surface 22 - second tile

detailed description

Below in conjunction with accompanying drawing, the structure of hatching pool among the present invention is described in detail.

The bottom of the hatching tank 10 is provided with a first water inlet 11 , and the top of the hatching tank 10 is provided with a second water inlet 12 . In the present invention, after the fish lay eggs on the artificial fish nest 20, they hatch in the hatching pool 10, and the first water inlet 11 at the bottom of the hatching pool 10 supplies water to the hatching pool from bottom to top, so that the water body in the hatching pool 10 It can be in a flowing state all the time to ensure sufficient oxygen in the water to ensure the normal hatching of fish eggs. In addition, the second water inlet 12 sprinkles water on the water surface of the hatching tank from top to bottom. On the one hand, the second water inlet 12 The circulation of the water body in the hatching tank 10 can be further strengthened, and the flushing habit of the fish can be satisfied, and the growth and development and spawning of the fish can be promoted.

The artificial fish nest 20 includes a first tile 21 and a second tile 22 covering the first tile 21, the first tile 21 and the second tile 22 are arc-shaped structures, and the first tile 21 The inner curved surfaces of the first tile 21 and the second tile 22 are arranged opposite to each other, and the inner curved surface of the first tile 21 constitutes a fish roe collecting surface 21a. In the present invention, the artificial fish nest is composed of a first tile 21 and a second tile 22, and the inner curved surfaces of the first tile 21 and the second tile 22 are relatively arranged to form a passage for fish to pass through, and the fish enter the passage It is possible to lay eggs on the inner arc surface of the first tile 21, that is, the collection surface 21a. The structure of the tile itself has a certain number of micropores, which can further enhance the water and oxygen content in the hatching environment of fish eggs, and Effectively improve the hatching rate of fish eggs. Especially for fish that lay sticky eggs, such as Channa nama, the tiles also have a certain degree of adhesion to fish eggs due to their microporous structure. egg efficiency.

In the present invention, the grid support 13 can ensure the penetration and circulation of the water body below and above the grid support 13 in the hatching tank 10; the structure of the shower 14 can effectively reduce the impact of water when the hatching tank 10 is supplied with water. It has a certain protective effect on the newly hatched fry, and can avoid the impact damage to the fry in the hatching tank 10 caused by the second water inlet 12 when water is supplied.

The hatching method also includes a square pool body 1, the bottom of the square pool body 1 is provided with a barrel-shaped concave cavity, the barrel-shaped concave cavity constitutes the hatching pool 10, and the side wall of the square pool body 1 is provided with an outlet. The nozzle 16, the square pool body 1 is formed by pouring concrete. The square pond body 1 described in the present invention is formed by pouring concrete, and the structure is simple, easy to process; After the fry are hatched in addition, the fry can swim out through the water outlet 16. Fish fry can be collected, which is convenient to use. The water outlet 16 can communicate with the reservoir, and the water in the reservoir can supply water to the main water inlet pipeline 15 to form a large water circulation system. When the hatching capacity is large, a plurality of square pool bodies 1 arranged side by side can be built to meet the hatching needs.

Both the first water inlet 11 and the second water inlet 12 communicate with the main water inlet pipeline 15 . When hatching, both the first water inlet 11 and the second water inlet 12 are opened to supply water to the hatch tank 10 to realize full circulation of the water body. After the fry hatch, the first water inlet 11 can be closed and only the shower 14 can be turned on. The hatch tank 10 is sprinkled with water.

Example 1

A, drop into niclosamide in the water body in pond, the input amount of niclosamide of every meter water depth of every mu pond is controlled at 2kg;

After b, 7 days, then drop into copper sulfate in the water body in the pond, the input amount of copper sulfate per meter of water depth of pond per mu is controlled at 0.75kg;

After c, 4 days, in the water body in pond, drop into chlorine dioxide again and carry out disinfection, the input amount of chlorine dioxide is 200g; (usually the preferred 200g of input amount of chlorine dioxide in hot weather, preferred 150g in low temperature weather, preferred 180g in breeding season.)

d. After 2 days, the chlorine dioxide becomes ineffective, and the above-mentioned water body is used for spawning and hatching of fish eggs; the process of spawning and hatching of fish eggs is carried out in the hatching pond, and the process of spawning and hatching of fish eggs starts the first The first water inlet and the shower at the second water inlet.

Example 2

A, drop into niclosamide in the water body in pond, the input amount of niclosamide of every meter water depth of every mu pond is controlled at 3kg;

After b, 10 days, then drop into copper sulfate in the water body in the pond, the input amount of copper sulfate per meter of water depth of every mu of pond is controlled at 1.25kg;

After c, 5 days, in the water body in the pond, drop into chlorine dioxide again and carry out disinfection, the input amount of chlorine dioxide is 150g;

d. After 2 days, the chlorine dioxide becomes ineffective, and the above-mentioned water body is used for spawning and hatching of fish eggs; the process of spawning and hatching of fish eggs is carried out in the hatching pond, and the process of spawning and hatching of fish eggs starts the first The first water inlet and the shower at the second water inlet.

Example 3

A, drop into niclosamide in the water body in pond, the input amount of niclosamide of every meter water depth of every mu pond is controlled at 2.5kg;

After b, 8 days, then drop into copper sulfate in the water body in the pond, the input amount of copper sulfate of every meter water depth of every mu pond is controlled at 1kg;

After c, 5 days, in the water body in pond, drop into chlorine dioxide again and carry out disinfection, the input amount of chlorine dioxide is 180g;

d. After 2 days, the chlorine dioxide becomes ineffective, and the above-mentioned water body is used to carry out spawning and egg hatching of perch; The shower head at the water inlet and the second water inlet.

In the above embodiment, when the treated water body is used for the hatching of fish eggs, no saprolegniasis and anoxic rot appear in the fish eggs, and the hatching rate of the fish eggs is high.

Claims (10)

1. the hatching apparatus of a fish oosperm, it is characterized in that: comprise hatchery (10), bottom, described hatchery (10) is provided with the first water-in (11), top, described hatchery (10) is provided with the 2nd water-in (12), is provided with the artificial fish nest for collecting fish-egg (20) in described hatchery (10).

2. the hatching apparatus of fish oosperm as claimed in claim 1, it is characterized in that: described artificial fish nest (20) comprises the first tile (21) and covers the 2nd tile (22) in the first tile (21) top, described first tile (21), the 2nd tile (22) are globoidal structure, and described first tile (21), the 2nd tile (22) inner side cambered surface positioned opposite, the inner side cambered surface of described first tile (21) forms the collection surface (21a) of fish-egg.

3. the hatching apparatus of fish oosperm as claimed in claim 1, it is characterized in that: described hatchery (10), for barrel-shaped and be half elliptic in the cross section in height direction, described hatchery (10) inside is provided with and is fixed on barrel wall and supports (13) for supporting the grid of described artificial fish nest (20).

4. the hatching apparatus of fish oosperm as claimed in claim 1, it is characterised in that: described 2nd water-in (12) place is connected with the flower carrying out sprinkling water in hatchery (10) and spills (14).

5. the hatching apparatus of fish oosperm as claimed in claim 1, it is characterised in that: described first water-in (11), the 2nd water-in (12) all communicate with water inlet manifold road (15).

6. the hatching apparatus of fish oosperm as described in item as arbitrary in claim 1-6, it is characterized in that: this device also comprises square pond body (1), described square pond body (1) bottom is provided with a barrel shape cavity, described bucket shape cavity forms described hatchery (10), the sidewall of described square pond body (1) is provided with water outlet (16), and described square pond body (1) is become by concrete placement.

7. the hatching method of a fish oosperm, it is characterized in that: the clean process comprising Spawning water, the water after described clean is utilized to carry out the hatching process of fish-egg, described hatching process carries out in described hatchery (10), bottom, described hatchery (10) is provided with the first water-in (11), top, described hatchery (10) is provided with the 2nd water-in (12), is provided with the artificial fish nest for collecting fish-egg (20) in described hatchery (10);

The clean process of described Spawning water comprises following operation steps:

A, dropping into niclosamide in the water body in the pool, the input amount of the every meter of depth of water niclosamide in every mu of pool controls at 2-3kg;

After b, 7-10 days, then dropping into copper sulfate in the water body in the pool, the input amount of the every meter of depth of water copper sulfate in every mu of pool controls at 0.75-1.25kg;

After c, 4-5 days, then dropping into dioxide peroxide in the water body in the pool and sterilize, the input amount of the every meter of depth of water dioxide peroxide in every mu of pool controls at 150g-200g;

D, after 2 days, above-mentioned water body is utilized to carry out hatch fish roe.

8. the hatching method of fish oosperm as claimed in claim 7, it is characterized in that: described artificial fish nest (20) comprises the first tile (21) and covers the 2nd tile (22) in the first tile (21) top, described first tile (21), the 2nd tile (22) are globoidal structure, and described first tile (21), the 2nd tile (22) inner side cambered surface positioned opposite, the inner side cambered surface of described first tile (21) forms the collection surface (21a) of fish-egg; Described hatchery (10) is for barrel-shaped and be half elliptic in the cross section in height direction, and described hatchery (10) inside is provided with and is fixed on barrel wall and supports (13) for supporting the grid of described artificial fish nest (20).

9. the hatching method of fish oosperm as claimed in claim 7, it is characterised in that: every mu of every meter, pool depth of water, the preferred 2.5kg of the input amount of niclosamide in described step a; The preferred 1kg of the input amount of copper sulfate in described step b; The preferred 180g of the input amount of dioxide peroxide in described step c.

10. the hatching method of fish oosperm as claimed in claim 7, it is characterised in that: described 2nd water-in (12) place is connected with the flower carrying out sprinkling water in hatchery (10) and spills (14); Described first water-in (11), the 2nd water-in (12) all communicate with water inlet manifold road (15); This hatching method also comprises square pond body (1), described square pond body (1) bottom is provided with a barrel shape cavity, described bucket shape cavity forms described hatchery (10), the sidewall of described square pond body (1) is provided with water outlet (16), and described square pond body (1) is become by concrete placement.