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Unsticking method for leuciscus idus fertilized eggs

A technology of fertilized eggs and yalo fish, applied in fish farming, application, climate change adaptation, etc., can solve the problems of low survival rate of fry hatching, easy cracking of fertilized eggs, hypoxia of fertilized eggs, etc., and achieve good physical adsorption Sex and surface activation, increase the survival rate of fertilized eggs, and the effect of improving the survival rate

Inactive Publication Date: 2017-06-23
BURQIN COUNTY EHETEYOU COLD WATER FISH BREEDING DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the fertilized eggs of the high body crocodile are viscous fertilized eggs, there is a phenomenon that the fertilized eggs are easy to stick, which will cause the fertilized eggs to grow water mold, lack of oxygen and die, and the survival rate of fry hatching is low, which cannot meet the market demand well.
If the fertilized eggs are gently separated by hand, it is easy to crack the fertilized eggs and cause the death of the fertilized eggs. Therefore, the fertilized eggs of the high body crocodile need to be debonded
[0004] At present, talcum powder solution is usually used for debonding. After debonding, the fertilized eggs in the state of 1-2 grains account for about 45%, and the survival rate in this state is only about 40%. The remaining fertilized eggs stick together, and there is a white film on the surface. Airtight, so that the fertilized egg is partially hypoxic and dies
Therefore, the problem of easy adhesion of fertilized eggs cannot be solved well

Method used

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  • Unsticking method for leuciscus idus fertilized eggs
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  • Unsticking method for leuciscus idus fertilized eggs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The specific operation steps are as follows

[0037] (1) Select brood fish: catch the parent fish of the high body crocodile, and judge the maturity of the gonad development of the parent fish from the external characteristics of the fish body and touch with hands; Red protruding, smooth on both sides of the body, mature male fish, rough feeling on the head and sides of the body, pearl stars on the head, white semen flowing out of the abdomen when lightly pressed, and the semen disperses when it meets water; the selected broodstock are divided according to the number of males and females The ratio is 1:2 or 1:3 for grouping, placed in the spawning pool, ready for artificial induction; the spawning pool is a cement pool, the water depth is 1 meter, the area is 30 square meters, the water temperature is 18 ℃, and there are 4 spawning pools 25 groups, 27 groups, 30 groups and 33 groups of broodstock were placed respectively, and the numbers of broodstock were 75, 84, 93 an...

Embodiment 2

[0049] The specific operation steps are as follows

[0050] (1) Select brood fish: catch the parent fish of the high body crocodile, and judge the maturity of the gonad development of the parent fish from the external characteristics of the fish body and touch with hands; Red protruding, smooth on both sides of the body, mature male fish, rough feeling on the head and sides of the body, pearl stars on the head, white semen flowing out of the abdomen when lightly pressed, and the semen disperses when it meets water; the selected broodstock are divided according to the number of males and females The ratio is 1:2 or 1:3 for grouping, placed in the spawning pool, ready for artificial induction; the spawning pool is a cement pool, the water depth is 1 meter, the area is 30 square meters, the water temperature is 15 °C, and there are 4 spawning pools 25 groups, 28 groups, 29 groups and 30 groups of broodstock were placed respectively, and the number of broodstock placed was 76, 82,...

Embodiment 3

[0061] The specific operation steps are as follows

[0062] (1) Select brood fish: catch the parent fish of the high body crocodile, and judge the maturity of the gonad development of the parent fish from the external characteristics of the fish body and touch with hands; Red protruding, smooth on both sides of the body, mature male fish, rough feeling on the head and sides of the body, pearl stars on the head, white semen flowing out of the abdomen when lightly pressed, and the semen disperses when it meets water; the selected broodstock are divided according to the number of males and females The ratio is 1:2 or 1:3 for grouping, placed in the spawning pool, ready for artificial induction; the spawning pool is a cement pool, the water depth is 1 meter, the area is 30 square meters, the water temperature is 18 ℃, and there are 4 spawning pools 25 groups, 29 groups, 32 groups and 33 groups of broodstock were placed respectively, and the numbers of broodstock were 77, 88, 94 an...

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Abstract

The invention provides an unsticking method for leuciscus idus fertilized eggs and particularly relates to the technical field of fish viscose fertilized egg unsticking. The method includes the following steps that fertilized egg mixed liquid and clay mixed liquid are mixed according to the mass ratio of 1:(1-3) and stirred for 5-7 min, unsticking mixed liquid is obtained and filtered, unstuck fertilized eggs are obtained, the unstuck fertilized eggs are washed completely with water, and fertilized eggs are obtained, wherein the fertilized egg mixed liquid is prepared through the steps that fish eggs and seminal fluid of leuciscus idus are mixed and stirred for 0.5-1.5 min, normal saline is added, the materials are stirred for 0.5-1.5 min, and the fertilized egg mixed liquid is obtained. According to the unsticking method for the leuciscus idus fertilized eggs, the clay mixed liquid is adopted for unsticking, the method is simple, low in cost and good in unsticking effect, and the survival rate of the fertilized eggs can be greatly increased.

Description

technical field [0001] The invention relates to a method for debonding fertilized eggs of tall crocodile fish. Background technique [0002] Leuciscus baicalensis belongs to Cyprinidae, Cyprinidae, Leuciscus subfamily, and Leuciscus genus. Also known as round-bellied crocodile. Is a sub-cold water fish. They mostly inhabit rivers and lakes with slow water flow. In China, it is only found in the Irtysh River system in Xinjiang, and has been listed as a second-class protected fish in Xinjiang. The morphological characteristics of the high-body crocodile are: body length, flat sides, round abdomen, no ventral ribs, rather tall body length, 3.2-3.7 times the body height, and a slender tail; Horseshoe-shaped, upper and lower jaws approximately equal in length. The eyes are medium-large; the lateral line is complete, and the front end is slightly curved to the ventral side; the scales are medium-large, with 56-61 lateral line scales, and each has a long axillary scale at the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/17
CPCY02A40/81
Inventor 卓然江潘国强卓莹蔡小琴潘奕霖刘晓辰龙敏
Owner BURQIN COUNTY EHETEYOU COLD WATER FISH BREEDING DEV
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