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Incubation method for loach fries

A seed and loach technology, applied in the hatching field of loach seed, can solve the problems such as low survival rate of loach seed and restrict the development of loach breeding industry, and achieve the effect of improving the survival rate

Inactive Publication Date: 2018-09-14
天津市水产技术推广站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Seed cultivation of loach is the key technical link of high-yield and high-efficiency loach breeding technology, but the survival rate of loach seedlings is low due to the inability to solve the problem of loach opening bait well in the prior art, which is the technical bottleneck of loach breeding and restricts Development of Loach Aquaculture Industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Incubation tank preparation

[0050] After cleaning the hatching tank with clean water, disinfect the hatching tank with 8% povidone-iodine, and then rinse the hatching tank with clean water. The hatching tank was injected with water that had been aerated for a week and filtered through a 120-mesh mesh. The water level was 50 cm, the water temperature was adjusted to 24 °C, and the dissolved oxygen in the water was 6 mg / L. Two hatching nets are set up and down in the water body of the hatching pond. The hatching net on the upper layer has an aperture of 70 meshes, and the hatching net on the lower layer has an aperture of 130 meshes. Both hatching nets cover the entire hatching pond.

[0051] nursery pond preparation

[0052] Before using the nursery pond, dry the pond for two months, then carry out bottom drawing and inject 30cm of water, add bleaching powder and trichlorfon for disinfection, so that bleaching powder and trichlorfon form a bleaching powder with a con...

Embodiment 2

[0058] Incubation tank preparation

[0059]After cleaning the hatching tank with clean water, disinfect it with povidone-iodine with a mass fraction of 12%, and then rinse the hatching tank with clean water. The hatching tank was injected with water that had been aerated and precipitated for a week and filtered through a 120-mesh mesh. The water level was 60 cm, the water temperature was adjusted to 26 °C, and the dissolved oxygen in the water was 8 mg / L. Two hatching nets are set up and down in the water body of the hatching pond. The hatching net on the upper layer has a hole diameter of 90 meshes, and the hatching net on the lower layer has a hole diameter of 120 meshes. Both hatching nets cover the entire hatching pool.

[0060] nursery pond preparation

[0061] Before using the nursery pond, dry the pond for two months, then carry out bottom drawing and inject 30cm of water, add bleaching powder and trichlorfon for disinfection, so that the bleaching powder and trichlor...

Embodiment 3

[0067] Incubation tank preparation

[0068] After cleaning the hatching tank with clean water, disinfect it with povidone-iodine with a mass fraction of 10%, and then rinse the hatching tank with clean water. The hatching tank was injected with water that had been aerated and precipitated for a week and filtered through a 120-mesh mesh. Two hatching nets are set up and down in the water body of the hatching tank, the hatching net on the upper layer has an aperture of 80 meshes, and the hatching net on the lower layer has a bore diameter of 125 meshes. Both hatching nets cover the entire hatching pool.

[0069] nursery pond preparation

[0070] Before using the nursery pond, dry the pond for two months, then carry out bottom drawing and inject 30cm of water, add bleaching powder and trichlorfon for disinfection, so that the bleaching powder and trichlorfon form a bleaching powder with a concentration of 0.02g / mL in the nursery pond The solution and trichlorfon solution with ...

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PUM

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Abstract

The invention provides an incubation method for loach fries, and belongs to the technical field of loach cultivation. The incubation method for loach fries provided by the invention comprises the following steps: (1) preparing an incubation pool; (2) using oxytocin to carry out hasten parturition on female parent loaches and male parent loaches; putting the female parent loaches and the male parent loaches injected with oxytocin into the incubation pool, so that eggs and sperms are fertilized; (3) obtaining fertilized eggs adhered onto an incubation net on the lower layer through the fermentation of the eggs and the sperms; (4) incubating the fertilized eggs adhered onto the incubation net on the lower layer to obtain water spots, and taking out the incubation net positioned on the lower layer; (5) after incubating the obtained water spots in the incubation pool, transferring the incubated water spots into a nursery pond, so as to be fed for 9 to 11 days. According to the method provided by the invention, the survival rate of the water spots can reach about 60%.

Description

technical field [0001] The invention belongs to the technical field of loach culture, in particular to a hatching method for loach seed. Background technique [0002] Loaches belong to the order Cypriniformes, the family Cobitidae, the genus Misgurnus lacpde in the subfamily Cobitinae. The loach is long, cylindrical, and flattened on the side of the tail handle. It is widely distributed in rivers, reservoirs, lakes, ditches and other water bodies. Loach meat is fresh and tender, delicious in taste and rich in nutrients. It is a high-protein, low-fat famous aquatic product variety. With the improvement of people's living standards and the emphasis on dietary nutrition, the nutrition and medicinal effects of loach are favored by consumers, resulting in a substantial increase in the market demand for loach. [0003] According to incomplete statistics, the price of loach has been rising continuously for more than ten years, and the export of loach has also increased significan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K61/17A01K61/10
CPCA01K61/10A01K61/17Y02A40/81
Inventor 姚学良樊克俭李贺密包海岩钟文慧郝俊徐晓丽张振奎
Owner 天津市水产技术推广站