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Technical method of artificial propagation of rainbow trout

A technology for artificial breeding and rainbow trout, which is applied in fish farming, application, climate change adaptation and other directions, can solve the problems of inconvenient adoption by trout farms, lag in detection time, complicated equipment structure, etc., so as to improve the efficiency of human reproduction and work. Efficiency improvement, reduction of work procedures and work tool effects

Active Publication Date: 2009-12-23
北京顺通虹鳟鱼养殖中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the hatching equipment is filled with dozens of layers of eggs in the bucket incubator, and the recoil flow will not make the eggs vibrate. The process of stopping water, absorbing water and expanding has become a time-consuming, laborious, risky and less necessary operation process.
[0006] △Parallel hatching tanks have the problems of complex equipment structure, high cost, and inconvenient adoption by trout farmers
[0007] △Embryo body phase fertilization rate detection technology, detection time lag, the naked eye observation of the embryo body, often due to the blurred shape of the embryo body, resulting in inaccurate detection

Method used

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  • Technical method of artificial propagation of rainbow trout
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  • Technical method of artificial propagation of rainbow trout

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Experimental program
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Effect test

Embodiment 1

[0056] Embodiment 1: as Figure 1-7 As shown, in order to realize the object of the present invention, the method of implementing small scale test, pilot scale test and then expanding to productive test in human reproduction production has been adopted, and various improvement technologies have been gradually perfected.

[0057] The technical method for the artificial propagation of rainbow trout comprises the following steps:

[0058] 1. Preparation of mono-salt isotonic solution

[0059] According to the original 3-salt isotonic solution (NaCl, KCl, CaCl 2 ) at a concentration of 0.97% to 1.0%, replace the three kinds of salt with the most widely sourced edible salt, and use the conventional solution preparation method to prepare a single-salt NaCl aqueous solution with a concentration of 0.97-0.98%. The effect of egg washing with liquid solution is the same as that of 3 salt solution, and the fertilization rate is about 10% higher than that without egg washing. The appli...

Embodiment 2

[0077] Embodiment 2: structure as embodiment 1,

[0078] The artificial propagation method of rainbow trout comprises the following steps:

[0079] 1. If figure 1 As shown, the ovum is adopted into the ovum collecting net basin 1 with the abdominal pressing method;

[0080] 2. If figure 2 As indicated, rinse the eggs with isotonic solution 2 of mono-salt (NaCl);

[0081] 3. After the ovum is moved into the insemination basin 12, if image 3 As shown, the semen is taken into the insemination basin 12, and the sperm and eggs are stirred evenly;

[0082] 4. If Figure 4 As shown, the fertilized eggs in the insemination basin are poured into the mesh basin bucket incubator 11 to fertilize the eggs in running water, the hatching water 3 is injected into the water injection pipe 5 through the funnel 4, and the injected water flows into the mesh basin from the bottom of the mesh basin 1 1. Make the excess semen overflow with the recoil water flow, and the eggs absorb water to...

Embodiment 3

[0087] In order to solve the problems in the above prior art and to promote the progress of human breeding technology, the rainbow trout artificial propagation technology method including 5 improved technologies has been released, which contains the following steps:

[0088] 1. Breeding of broodstock:

[0089] Select large female fish with an average egg size of 4.6mm and a weight of more than 1.2kg from the 2-year-old and above-spawned backup broodstock as backup broodstock for egg collection, and start breeding in special ponds. From June (gonads enter rapid development) period) began to feed the special feed for broodstock until the third-year-old fish was bred, which was used as broodstock for egg collection.

[0090] 2. Manual egg collection

[0091] From the broodstock for egg collection, select large individual female fish weighing more than 1.5kg (the usual method is to use the 2nd to 3rd age as a broodstock with a body weight of 0.75kg) for artificial egg collection,...

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Abstract

The invention relates to a technical method of artificial propagation of rainbow trout, belonging to the technical field of coldwater fish (salmon and trout) cultivation. The technical method comprises the following steps: step 1, preparing seepage of single salt and the like; step 2, implementing egg washing and artificial insemination of seepage of single salt and the like; step 3, implementing continuous operation of flowing water, absorbing water, expanding and incubation of oosperm in a mesh pot barrel-type incubator; step 4, detecting fertility rate in 4 cell stage; step 5, adopting a mesh cage (or gravel) flat flow type larval fish film-out incubation groove to implement larval fish film-out incubation; step 6, after the larval fish is incubated, removing the mesh cage or the gravel, carrying out larval fish opening training and raising in a primary groove; step 7, after one month of training and raising, removing the larval fish into a hexagonal raising groove, and carrying out offspring seed raising. By adopting continuous operation technology of flowing water, absorbing water, expanding and incubation, the technical method reduces operation procedures and operation tools of stopping water, absorbing water and expanding, and improves the incubation rate by 20%. Compared with the existing embryonic detection technology, the fertility rate detection technology in 4 cell stage is mastered 9 days in advance, thus avoiding the problem that embryonic detection is not accurate.

Description

technical field [0001] The invention relates to a technical method for artificial propagation of rainbow trout, and belongs to the technical field of cold-water fish (salmon trout) breeding. Background technique [0002] The existing rainbow trout artificial propagation method has been applied for more than 35 years, and there are several problems as follows: [0003] △Using 3-salt isotonic solution to wash eggs, the preparation of isotonic solution is troublesome, and it is inconvenient for general trout farms to use it. [0004] △After insemination, the eggs should be placed in the basin for 1 hour of water absorption and expansion, and then moved into the running water incubator. The expansion and hatching operations are intermittent, and there is a risk of egg death due to lack of oxygen if the water is stopped for one hour. . [0005] △Water-absorbing and swelling for 1 hour is a process adopted decades ago when fertilized eggs were placed in a single layer on an Atki...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 沈希顺王昭明杨玛丽
Owner 北京顺通虹鳟鱼养殖中心
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