Artificial cultivation and domestication method of salvelinus leucomaenis fries

The invention relates to a technique for artificial cultivation of chard trout, which is applied in the field of cultivating trout seeds, and can solve the problems of difficulty in ingesting artificial feed, incomplete nutrition intake, death of larvae, etc., and achieves good quality of domesticated fry and good operation. Simple, fast-growing results

Inactive Publication Date: 2010-12-01
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that when adopting the existing seed breeding method to cultivate domesticated white spot charr seedlings, due to the single feeding of water earthworms in the domestication process, the seedlings cannot abso...

Method used

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specific Embodiment approach 1

[0013] Specific embodiment one: the method for artificially cultivating domestication of the white-spotted charr seed of the present embodiment, it is divided into six stages successively:

[0014] Stage A1: the hatching management stage: before the fish fry open their mouths, they are raised in the hatching parallel tank for 10-15 days, and the hatching tank is washed with 1% salt water every day for 5-10 times;

[0015] In this embodiment, the cleaning time is between 6:00 am and 6:00 pm every day, and the interval between every two adjacent cleanings is the same; The dead eggs, dead seedlings and egg skins in the column tank are picked out, and the operation process of cleaning and selecting dead eggs, dead seedlings and egg skins is required to be gentle, so as to avoid damage to the yolk sac of the larvae and cause death;

[0016] Stage A2: zooplankton feeding stage: sterilize the fry that opened for the first time, then take the sterilized fry out of the hatching paralle...

specific Embodiment approach 2

[0024] Specific embodiment two: This embodiment is a further description of the artificial cultivation and domestication method of the white spot charr seedlings of the first embodiment. The process in the parallel tank is:

[0025] Utensils are used to scoop out the sterilized fry from the hatching parallel tank, and then put them into the parallel tank.

[0026] This is because the fry of white-spotted char are wild and tend to jump violently when transferred, so using a vessel to scoop out the fry can avoid the damage caused by picking the fry with a net.

specific Embodiment approach 3

[0027] Specific embodiment three: This embodiment is a further description of the artificial cultivation and domestication method of the white-spotted charred seed of embodiment one or two, and the A3 stage is specifically divided into 3 periods:

[0028] B1. From day 0 to day 3, water earthworms were fed for the first time every day, and zooplankton were fed for the last 4 times;

[0029] B2. From the 4th day to the 6th day, feed water earthworms for the first 2 times a day, and feed zooplankton for the last 3 times;

[0030] B3. From the 7th day to the 9th day, water earthworms were fed for the first 3 times a day, and zooplankton were fed for the last 2 times.

[0031] Choose to feed water earthworms when the fish eat for the first time every day. The purpose is to make the fry of white-spotted charr have an empty stomach and force the fry of white-spotted charr to eat water earthworms.

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Abstract

The invention discloses an artificial cultivation and domestication method of salvelinus leucomaenis fries, belonging to a cultivation method of fish fries, in particular to a cultivation method of salvelinus leucomaenis fries, and solving the problems of death, difficult domestication, low domestication rate and difficult artificial feed intake of the salvelinus leucomaenis fries because the salvelinus leucomaenis fries are only fed by the tubificidaes and can not take comprehensive nutrients in the cultivation and domestication process by adopting the traditional fry cultivation method. The artificial cultivation and domestication method of the salvelinus leucomaenis fries is sequentially divided into an incubation management stage, a zooplankton feeding stage, a zooplankton and tubificidae mixed feeding stage, a tubificidae feeding stage, a tubificidae and artificial feed mixed feeding stage and an artificial feed feeding stage. The method has the advantages of simple and convenient operation and low cost and ensures that the quality of the domesticated fries is good and the survival rate of artificially domesticated fries is improved to 79 percent from initial 20 percent, thus the method can be used for cultivating the salvelinus leucomaenis fries.

Description

technical field [0001] The invention relates to a method for cultivating seed fish, in particular to a method for cultivating seedlings of white-spotted char. Background technique [0002] White-spotted char (Salvelinus leucomaenis) belongs to Salmoniformes, Salmonidae, Salvelinus in fish taxonomy. The body of white-spotted salmon is spindle-shaped, with round scales and small body. It is brown with small white or gray spots on the side of the body, hence the name white-spotted char. [0003] White-spotted char is a famous and precious cold-water fish in my country. It grows fast, has strong disease resistance, tender meat and delicious taste. It is welcomed by the masses, so the development prospect is extremely broad. The white-spotted char is far from the main breeds of salmon and trout in my country. It has strong resistance to the current epidemic of salmon and trout, so it has the advantages of easy to master the breeding technology. At present, there is no specific ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 张永泉白庆利贾钟贺李建兴
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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