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A kind of mass cultivation method of albacore seedlings

A breeding method and technology of albacore, which is applied in the field of seedling cultivation of rare and unique fish albacore, which can solve the problems of strong stress response, frequent occurrence of small melon worm disease, high oxygen consumption, etc.

Active Publication Date: 2020-07-07
CHINESE STURGEON RES INST CHINA THREE GOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a batch cultivation method of albacus larvae, which can solve a series of technical problems such as strong stress response, frequent occurrence of small melon worm disease and large oxygen consumption during the cultivation process of albacorea larvae

Method used

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Comparison scheme
Effect test

Embodiment 1

[0022] This method was implemented in the Xiluodu Xiangjiaba Rare and Specific Fish Breeding and Release Station of China Three Gorges Corporation Corporation. The breeding test seedlings were obtained from self-induced breeding at the release station. The broodstock used for breeding were wild fish that had been artificially domesticated and matured. The specific conditions are as follows :

[0023] A batch cultivation method of albacore seedlings, the method is based on the developmental sequence, physiological and ecological characteristics, and differences in susceptibility to pathogenic organisms (small melon worms) of albacus alba in the entire seedling cultivation process. It is divided into 3 steps, namely: 1) static water temporary cultivation; 2) micro-aeration cultivation; 3) outdoor ecological pond cultivation.

[0024] Step 1) Cultivate 2-4 day old early larvae. The seedling cultivation facility is a square turnover box with a water capacity of about 0.07m 3 , th...

Embodiment 2

[0038] Step 1) Temporary cultivation in still water, in a fully enclosed shading turnover box, the water level of the incubator is 40cm, and the 4-day-old larvae are transferred into the 4-day-old larvae. The density of 4-day-old larvae is 28,000 fish / m 2 , cultivated at a water temperature of 20°C until 5 days old;

[0039] Step 2) Micro-aeration cultivation. Feed rotifers into the turnover box in step 1), once in the morning and once in the evening. The bait density is required to be maintained at 15 / ml, and the air stone is used for micro-aeration to increase oxygen to maintain The dissolved oxygen in the seedling water body reaches above 5mg / L, and the density of 15-day-old seedlings is adjusted to 10,000 / m 2 , cultivated at a water temperature of 20°C until 16 days old;

[0040] Step 3) Cultivate in an outdoor ecological pond. After the larvae are cultivated indoors until they are 16 days old, they choose to transfer them to the outdoor nursery pond at 8 o'clock at night...

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Abstract

The invention relates to a batch culture method for Phinogobio ventralis fries and belongs to the technical field of rare and unique fish fry culture. The method comprises the following three basic steps: 1) static water temporary rearing; 2) micro-aeration culture; and 3) outdoor ecological pond culture. By using the culture method for the fries, provided by the invention, indoor fry culture andoutdoor ecological pond culture are effectively combined on the basis of sufficiently researching the development characteristics of different stages of larvae, juveniles and young fishes of the Phinogobio ventralis and the difference of sensitivity to pathogenic microorganisms (ichthyophthirius multifiliis), and an appropriate opportunity is precisely selected to switch fry culture modes, so thatthe problem of relatively poor stress resistance of early-stage fries is effectively solved, meanwhile, the risk that fish fries are dead on a large scale due to the outbreak of ichthyophthiriasis can be effectively reduced, the survival rate of the fries and the production scale are remarkably increased, and the technical support can be provided for culturing the Phinogobio ventralis fries.

Description

technical field [0001] The invention relates to a method for cultivating fish species, in particular to a method for cultivating seedlings of rare and unique fish albacore. Background technique [0002] Longfin snout ( Rhinogobio ventralis Sauvage et Dabry ), belonging to Cyprinidae ( CyPriniforme ), Cyprinidae ( CyPrinidae ), Squid subfamily ( Gobioninae ), Kidney ( Rhinogobio Bleeker ), commonly known as foreign fish and soil mouse, is a typical and representative bottom-dwelling endemic fish in the upper reaches of the Yangtze River. However, due to overfishing, water pollution and construction of water conservancy projects in recent years, the resources of the albacore gizzard have declined sharply. In order to promote the coordinated development of cascade hydropower development and ecological environment protection in the lower reaches of the Jinsha River, China Three Gorges Corporation has built a supporting station for rare and unique fish multiplication a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/10A01K61/13
CPCA01K61/10A01K61/13Y02A40/81
Inventor 曲焕韬刘勇吴川鲁雪报胡美洪
Owner CHINESE STURGEON RES INST CHINA THREE GOR
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