Parent fish culturing method for scaled artificial breeding of finless ell

A technology of artificial reproduction and cultivation method, which is applied in the field of aquaculture, and can solve problems such as the inability to meet the needs of artificial reproduction and the lack of male fish

Inactive Publication Date: 2014-03-12
YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the number of male fish in the parent fish group is very small, which still cannot meet the needs of artificial reproduction

Method used

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  • Parent fish culturing method for scaled artificial breeding of finless ell
  • Parent fish culturing method for scaled artificial breeding of finless ell
  • Parent fish culturing method for scaled artificial breeding of finless ell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The following is an example of cultivating 600 catties of female eels with a size of 4 per catties to illustrate the cultivation method of female eels.

[0036] A method for cultivating broodstock of eel large-scale artificial propagation, the steps are as follows:

[0037] 1. Cage erection: 10 cages need to be erected in the pond: the mesh is 0.7mm, and the area is 2×2m 2 , the water depth in the net cage is 15cm, and the net cage is 60cm above the water surface. 100kg of water peanuts were put into each cage.

[0038] 2. Stocking of fish species: The stocking time is in the middle and late July of each year, and the water temperature is kept above 26°C. 15 wild fish species per jin are put in, and the stocking density is 4.5 jin / m 2 . 18 catties of wild fish species were placed in each cage. One week before stocking fish species, disinfect the cage with povidone iodine at a concentration of 5g / m 2 .

[0039] 3. Taming: Start feeding 3 days after the fish specie...

Embodiment 2

[0054] The following is an example of cultivating 5000 catties of female eels with a size of 5 per catties to illustrate the method of cultivating female eels.

[0055] A method for cultivating broodstock of eel large-scale artificial propagation, the steps are as follows:

[0056] 1. Net cage erection: 100 nets with a mesh size of 0.7mm and an area of ​​2×2m need to be erected in the pond 2 , the water depth in the net cage is 20cm, and the net cage is 50cm above the water surface. 100kg of water peanuts were put into each cage.

[0057] 2. Stocking of fish species: The stocking time is in the middle and late July of each year, and the water temperature is kept above 26°C. 20 wild fish species per jin are put in, and the stocking density is 4.0 jin / m 2 . 16 catties of wild fish species were placed in each cage. One week before stocking fish species, disinfect the cage with povidone iodine at a concentration of 5g / m 2 .

[0058] 3. Taming: Start feeding 3 days after the...

Embodiment 3

[0068] The following is an example of cultivating 20,000 catties of female eel with a size of 6 per catties to illustrate the method of cultivating female eel.

[0069] A method for cultivating broodstock of eel large-scale artificial propagation, the steps are as follows:

[0070] 1. Cage erection: 500 nets with a mesh size of 0.7mm and an area of ​​2×2m need to be erected in the pond 2 , the water depth in the net cage is 25cm, and the net cage is 40cm above the water surface. 100kg of water peanuts were put into each cage.

[0071] 2. Stocking of fish species: The stocking time is in the middle and late July of each year, and the water temperature is kept above 26°C. 25 wild fish species per jin are put in, and the stocking density is 3.5 jin / m 2 . 14 catties of wild fish species were placed in each cage. One week before stocking fish species, disinfect the cage with povidone iodine at a concentration of 5g / m 2 .

[0072] 3. Taming: Start feeding 3 days after the fis...

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Abstract

The invention discloses a parent fish culturing method for scaled artificial breeding of a finless ell. The method has the advantages of simplicity and easy implementation, and is suitable for the scaled artificial breeding of the finless ell. The method comprises the following culturing steps of 1, erecting a net case; 2, throwing brood fishes; 3, domesticating food intake; 4, carrying out the first time of physical reinforcing culturing; 5, carrying out the first time of overwintering; 6, growing and feeding in the second year; 7, carrying out the second time of physical reinforcing culturing; 8, carrying out the second time of overwintering; 9, carrying out the gonadal reinforcing culturing; and 10, carrying out the artificial breeding, so as to obtain the male and female parent fishes of the finless ell with large brood amount, high breeding capability and high sperm-egg quality. The culturing method provided by the invention has the advantages that the survival rate of the recovered parent fishes can reach more than 95%, the brood amount of one male fish with the weight of 100g can reach 600 to 800, and the hatchability of fries can reach more than 98%.

Description

technical field [0001] The invention belongs to the field of aquaculture, and in particular relates to a broodstock cultivation method for large-scale artificial propagation of ricefield eels. The method is simple and easy, and can obtain male and female ricefield eel broodstocks with a large amount of fertilized eggs, strong fecundity and high quality of sperm eggs. Background technique [0002] Field eel (Monopterus albus) is a subtropical fish, also known as eel, luoyu, field eel, long fish, yellow ginseng, scaleless son, field ginseng, etc., belonging to Synbranchia and Synbranchidae; There is only one species in the world, namely rice field eel. Widely distributed in Japan, Thailand, Indonesia, Philippines, Malaysia, India, Japan, North Korea and my country in Southeast Asia, it is distributed in my country except the Qinghai-Tibet Plateau, especially in the middle and lower reaches of the Yangtze River, where the distribution density is large and the output is high. im...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 柳凌朱祥云张洁明郭峰张涛
Owner YANGTZE RIVER FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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