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Cultivation method of Ussuri whitefish seed

A cultivation method, Ussuri's technology, applied in the fields of application, climate change adaptation, fish farming, etc., can solve the problem of high mortality, and achieve the effect of high mortality, good species quality, and easy promotion and demonstration.

Active Publication Date: 2020-08-14
HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention aims to solve the technical problem of high mortality in the large-scale cultivation of Ussuri whitefish seedlings, and provides a method for cultivating Ussuri whitefish seedlings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0012] Specific embodiment one: present embodiment Ussuri whitefish seed cultivation method is carried out according to the following steps:

[0013] 1. Put 50,000 fertilized eggs into the sterilized parallel tank in the flushing type hatching device (the standardized special flushing type hatching device is acrylic material with a diameter of 25cm and a height of 50cm). Water flow, hatching under the condition of avoiding light and temperature at 2°C to 5°C until the larvae of Ussuri whitefish rupture the membrane, and remove the egg skin, dead eggs and dead seedlings during the membrane rupture;

[0014] 2. After the larvae of Ussuri whitefish float up, they are cultivated at a density of 10,000 tails in each temperature-controlled circulating aquaculture unit (50cm×50cm×50cm). The larvae of Ussuri whitefish are fed with Artemia as biological bait during the opening stage. Feed, and feed Artemia larvae every day (20 grams of Artemia eggs need to be hatched for every 10,000 l...

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that the hatching temperature of the fertilized eggs in Step 1 is 3°C. Others are the same as the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the hatching temperature of the fertilized eggs in step 1 is 4°C. Others are the same as the first embodiment.

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Abstract

The invention discloses a coregonus ussuriensis fry culture method, relates to a fish fry culture method, and aims to solve the technical problem of high death rate in a large-scale culture process of coregonus ussuriensis fries. The method comprises the following steps: 1, rupturing membranes of the coregonus ussuriensis fries; 2, after the coregonus ussuriensis fries float upwards, feeding the coregonus ussuriensis fries in a mouth opening stage with fairy shrimps serving as biological baits, then feeding the coregonus ussuriensis fries with daphnia magna (which is aquatic zooplankton belonging to cladocerans) for 5 to 10 days after the coregonus ussuriensis fries open mouths for 15 to 20 days, feeding the coregonus ussuriensis fries with a water earthworm-complete formula feed for 10 to 15 days, and finally enabling the coregonus ussuriensis fries to adapt to the acclimation of the complete formula feed till the fries are 8 to 10 g in weight, namely completing culture of the coregonus ussuriensis fries, wherein after the weights of the coregonus ussuriensis fries are greater than 0.3 g in the step 2, the culture density is 4,000 to 5,000 pieces / m<3>. The coregonus ussuriensis fries cultured by the coregonus ussuriensis fry culture method are high in quality, and the survival rate can be increased to 80 percent or above. The coregonus ussuriensis fry culture method belongs to the field of fish fry culture.

Description

technical field [0001] The invention relates to a method for breeding fish species. Background technique [0002] Ussuri whitefish (Coregonus ussuransis Berg), commonly known as Yabasha and rabbit fish, belongs to Salmoniformes, Salmonidae, Whitefish subfamily, Whitefish genus. It likes to inhabit rivers with clear water quality, low water temperature, gravel substrate, and a certain flow rate. It belongs to the cold-water fish of the arctic freshwater flora complex. Since the main production area is located in the border river between China and Russia, and there is no restriction on the production of the border river, overfishing, especially the large number of juvenile fish with a weight of 100-200 grams caught by Chinese and Russian fishermen, directly affects the normal replenishment of resources. Large individual senior fish are extremely rare. [0003] Rare and high-quality fish farming is the development trend of the world’s aquaculture industry. In recent years, co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/17
CPCA01K61/00Y02A40/81
Inventor 徐革锋马波刘志国牟振波郝其睿张庆渔
Owner HEILONGJIANG RIVER FISHERY RES INST CHINESE ACADEMY OF FISHERIES SCI