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Brachymystax lenok fry high-density rearing method

A breeding method and high-density technology, which is applied in the field of high-density cultivation of lingon salmon seedlings, can solve the problems of low seedling survival rate, failure to realize large-scale seedling production, and artificial breeding that cannot form industrialization, so as to reduce feeding cost, alleviate the shortage of resources, and realize the effect of artificial breeding

Inactive Publication Date: 2015-06-10
河北省海洋与水产科学研究院
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  • Summary
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  • Claims
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AI Technical Summary

Problems solved by technology

As early as the beginning of the 20th century, the artificial breeding of lentinus salmon had been included in the scientific and technological research projects of the country and relevant provinces and cities. Most of the research units were caused by various reasons such as poor gonad development of parent fish and insufficient seed breeding technology. The survival rate of seedlings is low, and large-scale seedling production has not been realized, so artificial breeding cannot form industrialization, which brings certain difficulties to the protection of wild fish and resource recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Basic equipment: 20 circular fiberglass water tanks with a diameter of 200 cm and a height of 50 cm for seed cultivation tanks. The water inlet of each tank is filtered with 5 cm thick acrylic cotton in a 200-mesh sieve silk bag, and two 350-watt vacuum air pumps. 4 50 m 2 cement pool. The water source is artesian spring water.

[0023] Seed culture density and water flow: Floating larvae to 2.5cm long fry, density 20,000 fish / m 3 Water body, flow rate 2.0 m 3 / min. Fry body length 2.5cm -3.0cm, density 15,000 fish / m 3 Water body, the water flow is controlled at 3.0 m 3 / min, the fish fry body length is about 3.5cm and moved into the cement pond for cultivation, the density is 1000 fish / m 2 , flow rate 10.0 m 3 / min.

[0024] Opening bait: Brachionus calyx. Cold-water fish have a higher demand for unsaturated fatty acids than other fish. Before feeding, rotifers were fortified with Schizochytrium (Qingdao Yueyang Import and Export Co., Ltd.) and VC (Huamu Phar...

Embodiment 2

[0034] Basic equipment: 20 circular fiberglass water tanks with a diameter of 200 cm and a height of 50 cm for seed cultivation tanks. The water inlet of each tank is filtered with 5 cm thick acrylic cotton in a 200-mesh sieve silk bag, and two 350-watt vacuum air pumps. 4 50 m 2 cement pool. The water source is artesian spring water.

[0035] Seed culture density and water flow: Floating larvae to 2.5cm long fry, density 30,000 fish / m 3 Water body, flow volume 3.0 m 3 / min. Fry body length 2.5cm-3.0m, density 15,000 fish / m 3 Water body, the water flow is controlled at 5.0 m 3 / min, about 3.5cm into the cement pool for cultivation, density 1000 tails / m 2 , flow rate 10.0 m 3 / min.

[0036] Opening bait: Brachionus calyx. Cold-water fish have a higher demand for unsaturated fatty acids than other fish. Before feeding, rotifers were fortified with Schizochytrium (Qingdao Yueyang Import and Export Co., Ltd.) and VC (Huamu Pharmaceutical) for 12 hours before feeding. Fo...

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Abstract

The invention relates to the field of fry rearing, in particular to a brachymystax lenok fry high-density rearing method. The brachymystax lenok fry high-density rearing method comprises the steps of controlling the fry rearing density, controlling the water flow, controlling types of baits, controlling the feeding quantity and controlling the illumination intensity. According to the rearing method disclosed by the invention, high-density rearing can be carried out on the premise of controlling the survival rate of fries, rearing cost of brachymystax lenok is reduced, the output is improved, manual rearing of brachymystax lenok is implemented, and the current situation of shortage of resources of brachymystax lenok in China can be relieved.

Description

technical field [0001] The invention relates to the field of fish fry cultivation, in particular to a high-density cultivation method for lentil salmon fry. Background technique [0002] Qinling Lepidopteris belongs to Fish Class, Salmoniformes, Salmonidae, and Lepidoptera. Also known as "fine scale fish", "fine scale salmon". Lepidoptera is one of the special fishes in the alpine regions of my country, and it is the only one in the world. Its meat is plump, its fat content is high (3.8%-7.7%), it is rich in nutrition, and its eggs are quite valuable. It is a valuable economic fish. In recent years, due to the destruction of the natural ecological environment and the interference of human factors, the resource quantity of lobster salmon has been decreasing year by year, and it has been listed as a national second-class protected animal. As early as the beginning of the 20th century, the artificial breeding of lentinus salmon had been included in the scientific and technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 肖国华张立坤付仲郑伟高晓田马松山郭爱华
Owner 河北省海洋与水产科学研究院
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