SU1554852A1 - Device for growing rheophilic fishes in water flow - Google Patents

Abstract

The invention relates to fish farming and provides for the exclusion of disorders of the vestibular apparatus in fish, reduction of stress loads and injuries, and thus improvement of the growing conditions. The device contains a channel 2 for the circulation of water and the maintenance of fish in the form of the eight, located in the tank 1. The compartments 3 are intended for incubating caviar and are equipped with perforated false 6, overflow pipes 11 and chambers 8 for water purification. The compartments 3 and chambers 8 communicate with the cavity of the channel 2, and in the areas bounded by its branches there are water purification means in the form of chambers 4 with loading and overflow adjustable height pipes 14. The water supply system uses pipes 5. Organization of water flow Channel 2, which has the same number of right and left turns, removes the functional disorder of the vestibular apparatus. Combining the process of incubating the eggs and growing the larvae relieves stress and injury by eliminating the capture and transplant of the larvae. 2 Il.

Description

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And celebration refers to fish farming, namely, devices for incubating caviar and growing rheophilic (fast-moving) fish, and can be also used to contain demonstration hydrobionts in aquariums, aquariums, dolphins.

The aim of the invention is to exclude fish from disorders of the vestibular apparatus, reduce stress loads and injuries and thereby improve the growing conditions.

Fig. 1 shows the device according to the invention with a channel whose branches merge in the center; Fig. 2 shows the same. but the branches of the canal at the point of their intersection are ogled

A device for growing rheophilic fish in a water stream consists of a tank 1 located in the last closed channel 2 in the form of a figure eight for circulating water and keeping fish, two compartments 3 located between the walls of tank 1 and channel 2 in the section where the branches converge, and two water purification means located in areas bounded by the branches of channel 2 and containing chambers 4 filled with a load, and pipes 5 for supplying water, each of which 3 is equipped with a perforated falycdnom 6 for placing caviar during its nkubatsii, overflow pipe 7 is installed at the apex of the angle formed by the channel walls of the two chambers 2 and 8, and purification of water, arranged in two drushh yk's compartment 3 and separated from its main volume vertical transferred yurodkami 9

The compartments 3 are communicated with the channels 2 by means of a hole for extracting the larvae, which are made in the wall of the channel 2 and are blocked by the target valves 10. And the cleaning chambers 8 are connected. channels 2 cherm overflow coarse 11, equipped with regulating valves 12 In addition, in compartments 3, installation is provided under false to the back of the drain pipe 13

Chambers 4 are equipped with overflow, height-adjustable pipes 14, pressing UIH of the water in channel 2, and communicating with the latter through holes 15, made around the perimeter of chambers 4, in the wall of channel 2 In the central part of chambers 4 drain weights 16 are fixed, Hi devices and backwash devices

Channel 2 may contain two branches connecting in the middle part, and the channel throughout has the same cross-sectional area (phi 1). In this case, the pipe 5 for them but the water is fixed at the point where the branches of channel 2 merge at one of the vertices 17 formed by its walls.

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and equip with two nozzles 18 and 19, directed in opposite directions along the walls of the channel 2 adjacent to the top 17.

Channel 2 can be done like this

that its branches in the place of their connection are isolated from one another (Fig. 2). In this case, the branches of the channel are placed one above the other and their height at the intersection is half the height of channel 2 at any point of it. Water supply pipes 5 are fixed at opposite ends of channel 2 Pipe 5, 13 and 16 are also equipped with control valves 20, 21 and 22 respectively.

The device works as follows.

The tank 1 and the channel 2 are filled with water, and the circulation rate of the water is regulated by means of valves 20. After filling the device with water, its level is maintained by means of height-adjustable overflow pipes 14 installed in chambers 4, which are pre-filled with water 2/3 of the volume of chamber 4 water together with suspended particles enters into chamber 4 through holes 15 located in the lower part of the chamber wall and, filtered through the charge, goes into the overflow pipe 14 to the pump (not cauldron), which re-enters the device through the pipe 5 into chamber 4 as a result zhiz0 Ned telnosti were grown fish accumulates the organic precipitate, which is removed therefrom back current of water through a pipe 16 with rectifiers 22

Fish eggs are incubated in compartments 3, where it is placed within (not shown) on false 6. Water is fed there by gravity through four overflow pipes 11, and the feed rate is regulated by valves 12 First, water enters the chambers 8 for water purification, | de filtering through the filler, which is 2/3 of the chamber volume, goes down from both sides from top to bottom 6 From there, having passed under the partition 9, water enters compartments 3, up, lifts out from under the bottom 6

g vertically upwards, washes incubation frames with caviar, then pouring into overflow pipes 7 installed lower than overflow pipes 14 in chambers 4 The sediment formed in compartments 3 under false 6 sediment is removed by reverse flow of water by opening valves 21.

The larvae hatched from the eggs are kept in compartments 3 without feeding until the transition to free swimming. After this, use the rising slotted valves 10, forming a free passage.

5 through the holes in the closed channel 2, the larvae are released there on a small stream of water. Further rearing is carried out at optimum water circulation rates.

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to the set size and weight characteristics.

The introduction of the proposed device into the fish industry allows for the creation of advantages in the reproduction of fast-moving fish, in particular, salmon species, associated with the improvement of their maintenance conditions. Combining in the device the processes of incubating the eggs and growing the young excludes such methods that are unavoidable when growing, such as catching larvae, transporting them for transferring from one place to another, which removes undesirable stress loads and eliminates injury to the larvae. Growing the larvae in the flow of water with the path of movement along the eight, having the same number of alternating right and left turns, removes functional disorders of the vestibular apparatus of fast-moving fish, which occur when they are kept in circular or circular pools and aquariums.

Keeping fish in a stream of water with a trajectory of movement that does not cause disorder of the vestibular apparatus significantly improves imitation of natural conditions, increases physical fitness of the body, and develops useful skills for searching for food in moving water.

In addition, the use of the proposed device makes it possible to reduce capital costs by combining caviar incubation processes, growing fry and water purification in one device, as well as controlling the growing conditions.

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Feeding the young in the flow of water ensures full palatability of the feed, which leads to a decrease in unproductive feed losses, accelerates the growth rate of the young and improves their physical condition and fitness of the body.

Claims (1)

Invention Formula A device for growing rheophilic fish in a stream of water, comprising a tank with a closed channel for circulating water and keeping fish and a water purification means installed in the tank, characterized in that 5 eliminating disorders of the vestibular apparatus in fish, reducing stress loads and injuries and thereby improving growing conditions, it is provided with an additional means for water purification, the channel has the shape of figure eight, each compartment, 0 formed between the walls of the tank and the walls of the channel at the site of convergence of its branches, equipped with a perforated false to accommodate the caviar during its incubation, the overflow pipe installed in 5 to the top of the angle formed by the walls of the channel, and two chambers for water purification, located in the other two corners of the compartment and separated by vertical partitions from its main volume, the main volume of each compartment communicates with the channel 0 through the holes for the release of larvae, made in the wall of the channel and blocked by a valve, and the water treatment chambers are connected to the channel through overflow pipes with control valves, while the means for cleaning the water are located in the reservoir in the areas bounded by the branches of the channel.