A method for removing egg membranes in the hatching process of fish artificial reproduction

A technology of artificial reproduction and egg membranes, which is applied in the field of removal of egg membranes and egg membranes during the artificial breeding and hatching of fish. It can solve the problems of water quality deterioration, hatching tank overflowing fish fry escape, egg membranes blocking the mesh, etc., to reduce Labor costs, avoiding the death of a large number of fry, and reducing the effect of production risk coefficient

Inactive Publication Date: 2017-07-07
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem of using sieve silk net to filter and collect fry, which will cause broken egg membranes to block the mesh, causing the fry to escape from the hatching bucket overflow; when fish are in early breeding, use circulating water to hatch, and the broken egg membranes will be left in the incubator, which will cause water quality problems. In order to solve the problem of reduced survival rate of spoiled fry, a method for removing egg membranes during artificial breeding and hatching of fish was proposed

Method used

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  • A method for removing egg membranes in the hatching process of fish artificial reproduction
  • A method for removing egg membranes in the hatching process of fish artificial reproduction

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 and figure 2 Illustrate this embodiment, the filter device that removes ovum film in the hatching process of a kind of fish artificial reproduction described in this embodiment includes filter tank 1, storage bucket 2 and mesh tube 3, filter tank 1 is a rectangular tank body, filter tank 1 It is arranged below the drain outlet 6 of the incubator. The water inlet of the storage tank 2 is connected with the overflow port 1-1 of the filter tank 1. The net tube 3 is arranged in the water storage tank 2, and the net tube 3 is connected to the overflow port 1-1. 1 connected.

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 1 and figure 2 Illustrate this embodiment, in the filter tank 1 inner bottom surface of a kind of filter device that removes ovum film in the hatching process of artificial reproduction of fish described in this embodiment, be provided with a plurality of barrier rods 4 at equal intervals along the length direction of filter tank 1, and every The centerlines of each barrier rod 4 along the length direction are parallel to the centerline of the filter tank 1 along the width direction, and a plurality of barrier rods 4 divide the inner bottom surface of the filter tank 1 into a plurality of grooves 5 .

[0009] The technical effect of this embodiment is: set in this way, a plurality of barrier rods 4 can slow down the water velocity in the filter tank 1, and a plurality of barrier rods 4 can block broken egg membranes step by step, because the egg membranes are lighter, the first barrier rods 4. The broken egg membran...

specific Embodiment approach 3

[0010] Specific implementation mode three: combination figure 1 and figure 2 To illustrate this embodiment, the depth of each groove 5 of a filter device for removing egg membranes during the artificial breeding and hatching of fish described in this embodiment is 2 cm to 3 cm. Other components and connections are the same as those in the second embodiment.

[0011] working principle

[0012] When the fertilized eggs are about to break the membrane and emerge, reduce the water intake in the incubator to ensure that the eggs do not overflow. At this time, remove the silk screen at the outlet 6 of the incubator, so that the broken egg membrane and fry flow into the filter tank 1 together. , the water velocity in the filter tank 1 slows down, and the broken ovum and the dead eggs with saprolegnia will sink into the inner bottom surface of the filter tank 1, and the fry can swim freely in the filter tank 1, and with The water flow enters the net cylinder 3 in the water accumul...

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Abstract

The invention relates to filtration devices, in particular to an egg membrane removal filtration device for a fish artificial propagation hatching process for solving the problems that meshes are blocked by broken egg membranes and accordingly a hatching bucket overflows and fry escapes due to the fact that a bolting-silk screen is used for filtration and fry collection in a fish egg hatching process as well as broken egg membrane are left in a hatching unit and the deterioration of the water quality and the decreasing of the fry survival rate are caused accordingly when the recycled water is used for hatching in early fish propagation. The egg membrane removal filtration device for the fish artificial propagation hatching process comprises a filter tank, a water collection bucket and a screen barrel. The filter tank is rectangular and arranged below a water outlet of the hatching unit. A water inlet of the water collection bucket is in communication with an overflow opening of the filter tank. The screen barrel is arranged in the water collection bucket and in communication with the overflow opening. The egg membrane removal filtration device for the fish artificial propagation hatching process is used for filtering broken egg membranes produced in the fry hatching process.

Description

technical field [0001] The invention relates to a method for removing egg membranes, in particular to a method for removing egg membranes in the artificial breeding and hatching process of fish, and belongs to the field of aquatic products. Background technique [0002] Most of the artificial hatching of large freshwater fish such as green carp, grass carp, silver carp and bighead carp adopts hatching barrels, hatching rings, hatching tanks, etc. for flowing water hatching. When the fertilized egg is about to rupture, it will secrete a large amount of proteolytic enzymes to cause the egg membrane to rupture, and the fry will hatch. At the stage of membrane rupture and emergence, because the broken egg membrane is lighter, the egg membrane will be stirred together with the fry along with the water flow. In order to collect and obtain fry, people often use a sieve to block the fry in the incubator. This method also blocks a large number of broken egg membranes in the sieve, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/17
CPCY02A40/81
Inventor 徐伟耿龙武姜海峰李晨宇
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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