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Cultivation method capable of increasing survival rate of sturgeon fries

A breeding method and survival rate technology, which is applied in the field of breeding to improve the survival rate of sturgeon seedlings, can solve the problems of unsuitable survival rate of sturgeon seedlings, and achieve the effects of high food intake, less metabolic waste, and improved utilization rate of sturgeon seedlings

Inactive Publication Date: 2013-04-10
徐渊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Weakness is: the method of this invention is not suitable for improving the survival rate of sturgeon seedlings

Method used

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  • Cultivation method capable of increasing survival rate of sturgeon fries

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Effect test

Embodiment 1

[0018] Cultivation pool conditions: use a circular glass fiber reinforced plastic tank with an area of ​​1m2, a pool depth of 1.0m, and a water depth of 0.8m. The near-drainage method is adopted, and the bottom of the drain pipe is equipped with a sewage valve to remove deposited dirt. Underground well water, water temperature controlled at 20-24°C, dissolved oxygen ≥6 mg / L, pH 7-8, total ammonia nitrogen ≤0.5 mg / L, and 500 larvae weighing 10±2 g were put in.

[0019] During the opening culture period, according to the existing method, Artemia nauplius is fed as the opening bait, and the opening culture period is 30 days, and the opening nutrient bait is assisted in feeding within 15 days after the sturgeon seedlings open the mouth, and the opening nutrient bait is composed of the following weight ratio: Ingredients: maltodextrin 18%, protein powder 50%, yeast extract powder 18.5%, mannoprotein 12%, yeast selenium 0.5%, lysine 0.5%, tryptophan 0.5%, yeast extract powder is brea...

Embodiment 2

[0021] Cultivation tank conditions: use a circular glass fiber reinforced plastic tank with an area of ​​2m2, a pool depth of 1.0m, and a water depth of 0.8m. The near-drainage method is adopted, and the bottom of the drain pipe is equipped with a sewage valve to remove the deposited dirt. The breeding water is selected Underground well water, water temperature controlled at 20-24°C, dissolved oxygen ≥6 mg / L, pH 7-8, total ammonia nitrogen ≤0.5 mg / L, and 1,200 larvae weighing 10±2 g were input.

[0022] During the opening culture period, according to the existing method, Artemia nauplius is fed as the opening bait, and the opening culture period is 30 days, and the opening nutrient bait is assisted in feeding within 15 days after the sturgeon seedlings open the mouth, and the opening nutrient bait is composed of the following weight ratio: Ingredients: 30% maltodextrin, 25% protein powder, 30% yeast extract powder, 12% mannoprotein, 1% yeast selenium, 1% lysine, 1% tryptophan, ...

Embodiment 3

[0024] Cultivation tank conditions: use a circular glass fiber reinforced plastic tank with an area of ​​1.5m2, a pool depth of 1.0m, and a water depth of 0.8m. The near-drainage method is adopted, and the bottom of the drain pipe is equipped with a sewage valve to remove deposited dirt and water for cultivation. Underground well water is selected, the water temperature is controlled at 20-24°C, the dissolved oxygen is ≥6mg / L, the pH is 7-8, the total amount of ammonia nitrogen is ≤0.5mg / L, and 800 larvae with a weight of 10±2g are input.

[0025] During the opening culture period, according to the existing method, Artemia nauplius is fed as the opening bait, and the opening culture period is 30 days, and the opening nutrient bait is assisted in feeding within 15 days after the sturgeon seedlings open the mouth, and the opening nutrient bait is composed of the following weight ratio: Ingredients: maltodextrin 25%, protein powder 40%, yeast extract powder 22.5%, mannoprotein 10%...

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Abstract

The invention relates to a sturgeon cultivation method, in particular to a cultivation method capable of increasing the survival rate of sturgeon fries. The invention aims to overcome the defects that the survival rate of the sturgeon fries is low in the conventional cultivation technology and the cultivation method capable of increasing the survival rate of the sturgeon fries is not provided. The cultivation method capable of increasing the survival rate of the sturgeon fries comprises a mouth-opening culture period and a habituated culture period, wherein the sturgeon fries are auxiliarily fed with mouth-opening nutritional baits within 15 to 20 days after the sturgeon fries open mouths and eat food; the mouth-opening nutritional baits is prepared from the following components in percentage by weight: 10 to 30 percent of maltodextrin, 25 to 50 percent of protein powder, 10 to 30 percent of yeast extract powder, 8 to 12 percent of mannoprotein, 0.5 to 1 percent of selenium yeast, 0.5 to 1 percent of lysine and 0.5 to 1.0 percent of tryptophan. The cultivation method capable of increasing the survival rate of the sturgeon fries is simple in operation and low in cost; the fed mouth-opening nutritional baits have rich and balanced nutrition and high palatability and attractiveness; the sturgeon fries have high utilization ratio and few metabolic wastes; and the survival rate of the sturgeon fries at the mouth-opening culture period can be increased obviously.

Description

technical field [0001] The invention relates to a method for cultivating sturgeon, in particular to a method for improving the survival rate of sturgeon seedlings. Background technique [0002] At present, the artificial reproduction technology of sturgeon has been basically solved, but the reproduction technology is not very mature, especially in terms of hatching, the hatching rate is low, the deformity rate is relatively high, and the sturgeon seedlings are weak and easy to die, resulting in a shortage of sturgeon seedlings. A breeding method that can improve the survival rate of sturgeon seedlings. [0003] There are also methods for larvae breeding in the breeding technology now, in order to improve the survival rate of larvae, such as: Chinese Patent Publication No. CN101658147A, on March 3rd, 2010, an authorization announcement date, discloses a method for improving the survival rate of silver pomfret larvae, The invention measures the ratio of DHA / EPA / ARA in the bod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00A23K1/18A23K1/16
CPCY02A40/81
Inventor 徐渊
Owner 徐渊
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