A kind of low-temperature domestication cultivation method of beluga huso seedlings

A cultivation method and technology of dart's carp, applied in the fields of climate change adaptation, fish farming, application, etc., can solve the problem of low survival rate of seedlings, and achieve the effects of being conducive to prevention, reducing the probability of tail biting and mutual damage, and being easy to popularize.

Inactive Publication Date: 2016-03-23
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problem of the low survival rate of seedlings cultivated at low temperature in the existing method of cultivating beluga seedlings, thereby providing a method for domesticating and cultivating beluga seedlings

Method used

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Specific embodiment one: the method for domestication and cultivation of a kind of Huso dauricus seed of the present embodiment is carried out according to the following steps:

[0017] 1. According to the density of 7000-8000 larvae in each circular glass-steel tank, place the Dabry's larvae into the sterilized circular glass-steel tank. The diameter of the circular glass-steel tank is 2-3m, and the height is 40-50cm. 30-35cm, before the larvae open their mouths, they are temporarily raised at a temperature of 12-13°C for 8-9 days;

[0018] 2. After the larvae have passed the temporary breeding period, they are cultured with crushed water earthworm live bait at a water temperature of 13-14°C for 5-6 days, and then the water temperature is 14-15°C, the light intensity is 10-100 Lux, and the light time is 6-100 Lux. Feed 12 hours / day, 7 to 8 times a day, the amount of feeding is based on full food and a little leftover bait, and remove dead seedlings and residues during ...

specific Embodiment approach 2

[0027] Specific embodiment two: the difference between this embodiment mode and specific embodiment one is: in step one, the circular glass fiber reinforced plastic tank is disinfected with povidone iodine. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the diameter of the circular fiberglass tank in step 1 is 2m and the height is 40cm. Others are the same as in the first or second embodiment.

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Abstract

The invention provides a method for domesticating and cultivating Huso dauricus fry, aiming at solving the technical problems of a traditional sturgeon type fry cultivation mode, including low survival rate of Huso dauricus and difficulty in popularizing. The method comprises the steps of temporarily cultivating Huso dauricus larva fish 8-9 days at the temperature of 12-13 DEG C, cultivating the Huso dauricus larva fish 5-6 days at the water temperature of 13-14 DEG C by firstly feeding live baits of broken tubificidae, then implementing domestication and feeding with different feeds at different stages, and simultaneously controlling cultivation density and other environment factors till the fry weigh to 4.5-5g and are long to 9-10cm, which represents the completion of domesticating and cultivating the Huso dauricus fry. By the adoption of the method for domesticating and cultivating the Huso dauricus fry, the cultivated fry are good in quality and survive at the rate of up to 60%-65%, increased by 4-5 times in comparison with that fed by a conventional method; therefore, the foundation is laid for the large scale farming of Huso dauricus; meanwhile, reference and experience are provided for the artificial domestication of fish in other types; the popularization is easy; in addition, the method for domesticating and cultivating the Huso dauricus fry is applied to the field of aquatic product farming.

Description

technical field [0001] The invention relates to a method for domesticating and cultivating fish fry. Background technique [0002] Husodauricus (Husodauricus) belongs to the order Acipenseridae, the family Acipenseridae, and the genus Husodauricus. Dabry's sturgeon is a specialty of Heilongjiang, one of the only two species of sturgeon in the world, and it is also the largest fish in fresh water. The beluga fish is late in sexual maturity and needs to be 16-20 years old in the natural state. The generation cycle is long, and it is difficult to restore the resources once they are destroyed. Beluga is also one of the freshwater fish with the highest economic value in the world, and its caviar is one of the most expensive foods in the world. Due to environmental pollution, overfishing and other factors, at present, the natural resources of Huso dabryii in Heilongjiang have declined sharply. In 2005, the fishing output in Heilongjiang Province was less than 10 tons, and it is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 吴文化孙大江张颖宋聃陈金平王念民
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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