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Artificial breeding method of Barbatula nuda

A technology for artificial reproduction and fish breeding, which is applied in the field of fish farming, and can solve problems such as uneven specifications, small number of fry, and inability to breed large-scale fish, so as to achieve convenient and reliable operation, increase the rate of induced spawning and fertilization, and solve the problem of large-scale fry The effect of production difficulties

Inactive Publication Date: 2016-12-14
辽宁省淡水水产科学研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for artificial propagation of northern loach, to solve the problem that the existing northern loach fry need to be fished in natural waters, and there are few fry, uneven specifications, and cannot be cultivated in a large area

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of artificial reproduction method of northern eel loach, comprises the following steps:

[0020] 1. Collect species of fish: select healthy wild fish from natural waters, and collect mahi mahi broodstock from the north in early March: female fish body length 9-11cm, weight 8-50g, 3 years old, full and transparent abdomen, can be seen clearly Eggs in the mature ovary; the body length of the male fish is more than 8-11cm, the weight is 5-30g, 2 years old, and the hand feels rough. After collection, soak in 30g / L salt water for 5 minutes, and the ratio of male to female fish is 2:1.

[0021] 2. Stocking and cultivating seedling fish: Put the selected seedling fish into a temporary cement pond with a density of 100 fish / ㎡, a water depth of 40cm, and a water temperature of 10°C. After the breeding fish enter the pond, after 1 day of slowing down, the bait is fed. The bait is a combination of pellet feed and water silk worms. The feeding amount accounts for about 3% o...

Embodiment 2

[0028] A kind of artificial reproduction method of northern eel loach, comprises the following steps:

[0029] 1. Collect species of fish: collect and select healthy wild fish from natural waters, and collect mahi broodstock from the north in early March: female fish body length 10-15cm, weight 30-75g, 3 years old, full and transparent abdomen, can be seen clearly The eggs mature in the ovary; the male fish is 10-13cm in length, 20-50g in weight, 2 years old, rough to the touch. After collection, soak in 35g / L salt water for 7 minutes, and the ratio of male to female fish is 2.5:1.

[0030] 2. Stocking and cultivating seedling fish: Put the selected seedling fish into the temporary cement pond with a density of 125 fish / ㎡, a water depth of 50cm, and a water temperature of 15°C. After the breeding fish enter the pond, after 1 day of slowing down, the bait is fed. The bait is a combination of pellet feed and water silk worms. The feeding amount accounts for about 4% of the bree...

Embodiment 3

[0037] A kind of artificial reproduction method of northern eel loach, comprises the following steps:

[0038] 1. Collection of species: select healthy wild fish from natural waters, and collect broodstock of northern mahi mahi in early March: the female fish is 12-16cm in length, 75-100g in weight, 3 years old, with a full and transparent abdomen, which can be clearly seen Mature eggs in the ovary; the male fish is 10-15cm in length, 50-75g in weight, 2 years old, rough to the touch. After collection, soak in 40g / L salt water for 10 minutes, and the ratio of male to female fish is 3:1.

[0039] 2. Stocking and cultivating seedling fish: put the selected seedling fish into temporary cement ponds with a density of 150 fish / ㎡, a water depth of 60cm, and a water temperature of 17°C. After the breeding fish enter the pond, after 2 days of slowing down, the bait is fed. The bait is a combination of pellet feed and water silk worm. The feeding amount accounts for about 5% of the br...

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Abstract

The invention discloses an artificial breeding method of Barbatula nuda. The artificial breeding method comprises the following steps: firstly, collecting parent fishes: harvesting from a natural water area to select healthy wild fishes, and starting to collect parent Barbatula nuda in early March; secondly, stocking and breeding the parent fishes: putting the selected parent fishes into a temporary cement pond; after the parent fishes enter the pond, enabling the parent fished to stay in the pond for 1 to 2 days and then starting to feed bait; thirdly, preparing a parturifacient: mixing and proportioning 1000 international units of gonadotropin, 2mu g of luteinizing hormone releasing hormone No.2 and 1mg of domperidone for each kilo of female fish chorionic vill; fourthly, hastening spawning: injecting the parturifacient prepared in the third step into base muscle of dorsal fins of the parent fishes; fifthly, artificially inseminating: performing dry inseminating to obtain fertilized ova; sixthly, incubating, thus obtaining Barbatula nuda fries after 7 days. The developmental maturities of sexual glands of the parent fishes are basically consistent. A parent fish population centrally spawns, so that the induced spawning rate and the fertilization rate are improved. The whole technical process is performed within a controllable range, is little influenced by an external environment, and is convenient and reliable to operate.

Description

technical field [0001] The invention belongs to the technical field of fish breeding, and in particular relates to an artificial propagation method of northern eel loach. Background technique [0002] Northern loach ( Barbatua nuda ), also known as northern loach, flower loach, Ba loach, Dong's bar loach, Dong's bark loach, belongs to Cyprinidae, Loachidae, Loach subfamily, and the genus Loach, mainly distributed in the Yalu River, Liaohe River, and Heilongjiang in my country The upper and middle reaches, Wusuli River, Songhua River, Nenjiang River, Mudanjiang River, Suifen River, Tumen River and other water systems like to live in cold waters and belong to small cold water fish. [0003] The meat of northern loach is tender and delicious, and is deeply loved by consumers. In the eastern mountainous area of ​​Liaoning, the adult fish of the northern echinacea can reach 100-400 yuan per kilogram, and the economic value is relatively high, so the market is in short supply. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/00
CPCA01K61/00Y02A40/81
Inventor 骆小年徐忠源王新荣于翔魏洪祥徐浩然韩雨哲刘义新赵晓临刘丙阳
Owner 辽宁省淡水水产科学研究院
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