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Method for breeding finless eel in pond

A pond and eel technology, applied in fish farming, application, climate change adaptation, etc., can solve the problems of inability to meet the needs of large-scale farming, low fertilization rate, hatching rate and survival rate, etc.

Inactive Publication Date: 2010-03-10
FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the current situation that the fertilization rate, hatching rate and survival rate of rice field eel are low in the process of artificial propagation and cannot meet the needs of large-scale farming, the present invention provides a pond breeding method for rice field eel: imitating the natural breeding environment of rice field eel in the pond, using artificial Methods The brood eels were ripened so that the female and male brood eels could mate and reproduce on their own in the pond, and hatched by making full use of the foam nests in natural reproduction, which greatly improved the fertilization rate, hatching rate and survival rate of the eels

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0013] 1. Preparation of the breeding pool. Breeding pond area 2000m 2 , the water depth is 1.2m. 150g / m of quicklime was used in the breeding pond 10 days before stocking 2 Disinfect and inject new water to a depth of about 20cm. After 3 days, add water to 0.8m, and apply 300kg of decomposed organic manure per mu. A week later, plant strips of water hyacinth and water peanuts at intervals of 1m from the edge of the pool. The width of the strip is 3 meters, accounting for about 15% of the water in the pool. .

[0014] 2. Pro-eel selection and stocking. In late April, wild, sexually mature, healthy, healthy, fast-moving, yellow-brown dark-brown female and male eels were captured by cages from rivers, lakes and rice fields. Use 10 mg / L povidone-iodine immersion bath containing 1% available iodine mass percent for 5 minutes and then stock the pond. The specification of pro-eels is 12 tails / kg, and 100kg per mu is stocked.

[0015] 3. The ripening of eels. Add 1‰ chorioni...

Embodiment approach 2

[0020] 1. Preparation of the breeding pool. Breeding pool area 3335m 2 , the water depth is 1.2m. 200g / m of quicklime was used in the breeding pond 15 days before stocking 2 Disinfect and inject new water to a depth of about 20cm. After 5 days, add water to 0.8m, and apply 300kg of decomposed organic manure per mu. After one week, plant water hyacinth and water peanut strips at intervals of 1m from the edge of the pool. The width of the strips is 4 meters, and the area accounts for about 17% of the pool water. Plant grass in the center of the pool, and the area covered by aquatic plants accounts for about 45% of the pool water.

[0021] 2. Pro-eel selection and stocking. In the first ten days of May, the female and male eels that have reached sexual maturity were artificially bred. The parent eels are healthy, free of injuries, and swim fast. After the eels were selected, the ponds were stocked, and 120 kg of eels were stocked in each mu of ponds. Before stocking, 0.1 mg...

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Abstract

The invention provides a method for breeding finless eel in pond in order to solve the problem that the fertility rate, the hatchability and the survival rate of the finless eel are low during the fully artificial propagation process at present, and therefore, the scale breeding requirements can not be satisfied. The method comprises the following steps: simulating a natural breeding environment of the finless eel in the pond, accelerating maturity of the finless eel by an artificial method, enabling a female finless eel and a male finless eel to voluntarily mate and propagate in the pond, andsufficiently utilizing a foam nest required in natural propagation to incubate, thereby greatly increasing the fertility rate, the hatchability and the survival rate of the finless eel, and thereforethe problem of scale breeding of finless eel fries.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a method for large-scale artificial propagation of eel seedlings by using ponds. Background technique [0002] Rice field eel is a special aquaculture species with high protein, low fat and therapeutic effect. With the gradual reduction of wild eel resources and the increasingly prominent contradiction between supply and demand in the market, artificial breeding of eels has become an inevitable trend in the development of special aquatic industries. However, at present, the seedlings of artificially cultured rice field eels mainly come from wild catches. Due to the increasing scarcity of natural rice field eel seed resources and the immature artificial propagation technology of rice field eels, the development of rice field eel industry is seriously restricted. At present, the method of artificial breeding of rice field eel mainly adopts the methods of injecting ...

Claims

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Application Information

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IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 邴旭文胡海彦狄瑜何杰
Owner FRESHWATER FISHERIES RES CENT OF CHINESE ACAD OF FISHERY SCI
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