SU1282834A1 - System for keeping producers of fish and their spawning - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to the field of fish farming, in particular, to systems for keeping and spawning fish producers. The invention is aimed at creating conditions for keeping and spawning, which are close to natural, ensuring incubation of caviar, further growing of the larvae obtained from it and thus reducing the cost of reproduction of fish. For this, the system contains a closed channel (k) 1 in the Lorme of the ellipse, dam 5, installed along the larger a S 17 (L Yu CX) to cx 00 4

Description

(21) 3885851 / 28-13

(22) 04.16.85

(46) 01/15/87. Bul № 2

(71) Ukrainian State Head Design and Survey and Research Institute Ukrgiprovodkhoz

(72) V.D. Hollow to, L.P. Filochagov,

V.V. Chkalov, P.S. Vovk and B.S. Stepanenko

(53) 639.335 (088.8)

(56) USSR author's certificate

No. 625667, cl. A 01 K 61/00, 1977.

USSR Author's Certificate No. 789076, cl. A 01 K 61/00, 1978.

(54) SYSTEM FOR THE CONTENT OF FISH MANUFACTURERS AND THEIR SPRING (57) The invention relates to the field of fish farming, namely to systems for keeping and spawning fish producers. The invention is aimed at creating conditions for keeping and spawning, which are close to natural, ensuring incubation of caviar, further growing of the larvae obtained from it and thus reducing the cost of reproduction of fish. For this, the system contains a closed channel (k) 1 in the Lorm ellipse, dam 5, installed along the larger

and s

17

(L

Yu

CX)

to

sc

00 4

the diameter of the site, occluded with K 1 with the formation of sections 6 for rearing of the larvae. In K 1, devices (P) 3 are installed at the points where the water flow is most drained against its outer wall 4 to change the direction of water flow. П 3 are supplied with hydraulic accelerators and fixed on wall 4 with the possibility of turning in

one

The invention relates to fish farming, in particular, to systems for keeping fish spawners and spawning, and can be used to obtain fry of young fish, especially plant fish.

The purpose of the invention is the possibility of creating conditions for spawning close to natural, ensuring incubation of eggs, further growing of the larvae obtained from it and thereby reducing the cost of reproduction of fish.

The use of the proposed system will allow preserving the breeding stock, caviar, larvae and fry of plant-like fish as much as possible, reducing the use of expensive gototropic hormones, reducing the cost of manual labor and technical equipment.

FIG. 1 shows a system for keeping fish producers and their spawning plan; in fig. 2 shows section A-A in FIG. one.

The system for keeping fish spawners and spawning contains a closed channel 1 with zero bottom inclination, having an elliptical shape and a variable (from bottom to top edge) section, pumping station 2 for supplying water to channel 1 and creating circulating flow in it 3 with hydroaccelerators for measuring the direction of water flow in channel 1, located diametrically opposite to the places of greatest pressure release to the outer wall 4 of channel 1, dam 5, installed along the larger diameter of the platform contoured by channel 1 with melvertikalnoy plane. The plots 6 are equipped with fish collecting and drainage channels 9, 10, Darnia mami 8 and fish catcher 12, as well as water supply and water inlet structures 1 1 and 13. The water inlet structures 13 are located in the inner wall 14 K 1 in the area of the devices 3. 1 zp f-ly, 2 ill.

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the plots 6 for the larvae pulling, and the waste collector 7 for draining the water from the channel 1.

Each section 6 is equipped with daphne mami 8 located near dam 5, a fish collection and drainage network of canals including channels 9, transversely located along the bed of 5 parts 6 from dam 5 to the perimeter of canal 1, and connecting them at the outer ends of channel 10 located along the inner perimeter of the channel 1, as well as with the water discharge pipe 11, the fish catcher 12 and the water inlet structure 13 located in the inner wall 14, channel 1 in the zone of action of the device 3.

Devices 3 for changing the direction of water flow are hingedly fixed on the outer wall 4 of channel 1 with the possibility of rotation in a vertical plane and fixation in a predetermined position.

Attachments 3 are designed to control the behavior of the fish and the modes of passing water through Channel 1 by changing the cross-sectional area and the flow direction towards the intake facilities 13,

The optimal relative immersion depths of adaptation 3 are assumed to be equal to 0.8 of the depth of channel 1, since in these horizons the main mass of migratory larvae of plant fish is concentrated and optimal conditions are created for their direction to areas 6.

Each device 3 can be implemented in the form of a string -; Nltsego water-impermeable flat

a shield fixed vertically at the scrap of two hinged supports - pt and galsbant.

The shield is controlled by means of a hydraulic drive with traction bodies (not shown).

To enhance the hydraulic effect — created by the device 3 in the direction of water flow and the larvae toward the water inlet structures 13 — they are equipped with a hydroaccelerator, the nozzles of which are mounted on the shield or near it from the side of the incoming water flow so that the water jet from the nozzles is directed from the bottom upwards approximately along the shield diagonal from the outer wall 4 of channel 1 to its inner wall 14. The water outlet structures 11 are designed to regulate the horizon - water in sections 6, as well as to completely empty them, and in the system ut be used any known construction intended for this purpose.

The water intake structures 13 are constructively open type, the width of the front of which is determined from the conditions for optimal passage of the larvae to areas 6. Channel 1 is connected to the waste collector 7 by means of a flow pipe of any known construction (not shown).

Water is pumped from pump station 2 to channel 1 via a pressure pipe (not shown), which, when entering channel 1, ends with an outlet tip with a siphon equipped with a vacuum valve, which prevents the vacuum from flowing and prevents the back flow of water through the pump units in case of emergency shutdown of the pumping station 2.

The catcher 12 communicates with a channel 10 connecting the ends of the channels 9 and is a trapezoidal or rectangular chamber in a cross section where young are concentrated when water is discharged from: plots 6 and from where it is caught for replanting to other water bodies. In addition, it is advisable to equip the plots 6 with a device 15 for creating the greenhouse effect, which can be a column system with stretches serving

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Bridges 17 are designed to fasten the polyethylene film 16. Bridges 17 are designed to enter and exit vehicles on the dam 5.

The system works as follows.

The circulation channel 1 through the pumping station 2 is filled with water to the level vC (Fig. 2). Manufacturers are launched into the canal (however, they can be here all the time), where their feeding and maturation of their sexual products take place. In the first half of July, the channel is periodically filled to the level of j D and reset to the level of vC (by means of a discharge manifold 7), ensuring the required flow rate. imitating thereby close to the natural conditions, i.e. provoking producers to spawn. In the second half of July, the canal is filled to the level of vD (flow rate of 0.7-1.2 m / s is noted at the site of water discharge from the discharge pipeline of the pumping station 2), which ensures the formation of zones for the natural spawning of plant fish in the water flow. As caviar swells, the speed in the channel is set to 0.2 ... ... 0.4 m / s. In case of mass hatching of prelarvae and their transition to a mixed feed, without changing the set flow rate, fill the channel to level f. Equipment 3 is set under the angle so that, taking into account the work of hydroaccelerators installed on them, the flow where there is a mass concentration of fry is directed to the inlet structures 13. At the same time, sections 6 are filled with a simultaneous transfer of prelarva to shallow water - (0- 0.5 m), where the further development of fry takes place. In order to provide a guaranteed amount of feed, on both sides of the dam 5 in the shallow areas 6 there are daphne weights 8, which are filled with composts for growing live food. Under adverse weather conditions over shallow water areas 6, they create a greenhouse effect by bonding them with transparent plastic film 16 by means of devices 15, which provides the necessary temperature for the normal development of juvenile fish and stitch feed.

 12 pond.

If the system is in communication with the fry intended for further ingestion, the latter is transferred to the reservoir through the discharge manifold 7 by gradual lowering of the level, ensuring the release of sections 6 from water and fry through the outflow structures 11. In case of need to transfer the fry to fish that are not communicated with the system , the water level in the canal is gradually reduced to a level below VD, and in the process of gradual release of water from the plots 6 the juvenile rolls into the fish catchers 12 and from there is pumped with water into the transport means intended for transport of fish in the other ponds.

Use in channel 1 spawning panels, artificial nests or dumping sites Leschano - gra; ensuring the necessary hydraulic and biological conditions will contribute to the successful spawning of such fish as sturgeon, perch and carp.

The presence of channel 1 in the form of an ellipse, the location of devices 3 in the places of the greatest pressure of water flow and the possibility of their rotation in the vertical plane creates favorable conditions for adjusting the hydraulic and hydrological regimes, which brings them closer to natural and allows them to improve spawning. The same features of the constructive implementation of channel 1 in the system provide the necessary conditions for the incubation of fertilized eggs and the prelarvae removed from it.

The formation between the dam 5 and the channel 1 of the shallow water areas 6 and their connection with the channel 1 through the water intake facilities 13 located in the zone of action of the devices 3, allows for the removal of larvae to areas 6 and us further growing under favorable conditions while ensuring live feed received in daphnia max 8.

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Claims (2)

1. A system for keeping fish spawners and spawning, comprising a closed channel with zero bottom inclination, means for creating a circulating flow of water in the channel and draining water from it and adapting to change the direction of the flow of water circulating in the channel, , with the aim of creating conditions for keeping and spawning, close to natural, ensuring incubation of eggs, further growing the larvae obtained from it and thereby reducing the cost of reproduction of fish, it is equipped with a dam, the canal has the shape of an ellipse, and the dam is installed along the larger diameter of the site, contoured by the canal, with the formation between it and the canal of areas for growing larvae, each of which is equipped with daphnia mami, a fish collecting and drying network of canals with a catcher and communicating with a closed channel by means of water outlets and water intake structures, while the devices for changing the direction of water flow are supplied with hydroaccelerators located in the channel diametrically opposite in places most press water to the outer wall of the channel and are mounted on the latter with the possibility of turning in a vertical plane and fixing in a predetermined position, and water intake structures are placed in the inner wall of the channel in the zone of action of devices to change the direction of water flow. I 2. Pop-up system 1, characterized in that the areas for larvae eradication are equipped with devices for creating the greenhouse effect. 0 five 0 50 ,P // ZlJL-JP T TTTVlj -1 N H 0.00 Aa 0.00