Industrial loach breeding and fry culturing method

Abstract

The invention provides an industrial loach breeding and fry culturing method and belongs to the field of aquaculture. The method includes industrial breeding and fry culturing workshop construction and a specific breeding and fry culturing method. The specific breeding and fry culturing method includes: arranging bi-layer open net cages in a cement pool in a breeding workshop, wherein inner net cages are rutting and spawning places for parents, and outer net cages receive eggs concentratedly; and arranging a plurality of open foam boxes in a hatching and fry culturing workshop, placing the eggs into the foam boxes after counting, feeding loach fries by micro initial feed after hatching to fries to enable the loach fries to live through an initial critical period to become strong fries, and selling the fries or placing the fries into a pond for large-scale fingerling rearing. A workshop production process is adopted, breeding and hatching and fry culturing environments are guaranteed effectively, operation is facilitated, working efficiency is high, fecundity can be measured accurately, fertilization rate reaches above 98%, hatching rate basically reaches 100%, fry survival rate basically reaches 100%, and survival rate of large-scale fingerling rearing by placing the strong fries into the pond reaches above 50%.

Description

technical field

[0001] The invention relates to a loach industrialized breeding seedling raising method, which belongs to the technical field of aquaculture. Background technique

[0002] In recent years, the scale of loach farming has developed rapidly, and seedlings have become a bottleneck restricting the development of the industry. The situation of buying seedlings from all over the country is still a prominent problem, and most of them are wild-caught seedlings. It is difficult to guarantee the quality of seedlings, which increases the risk of breeding. How to carry out large-scale reproduction, improve the fertilization rate and hatching rate of loach eggs, the survival rate of seedling cultivation, and reduce labor intensity and reproduction cost are the key points.

[0003] At present, loach seedlings are mostly bred in the open air, and a few rely on the four major domestic carp breeding facilities. The main methods are as follows: full artificial insemination, hat...

Examples

Embodiment 1

[0023] ⑴Construct a loach breeding workshop of 200 square meters, plastic greenhouse type, the roof is covered with a layer of sunscreen net, and the surroundings are open. A cement breeding pond is built indoors, 120 square meters, the depth of the pond is 0.8 meters, and the water injection is 0.5 meters.

[0024] ⑵Build a hatching and seedling workshop with an area of ​​1,200 square meters. The soil is flat and plastic shed-style. The roof is covered with a layer of sun-proof net, and there is a circle of gauze around it to prevent debris from entering and maintain ventilation. The two workshops are adjacent but relatively independent.

[0025] (3) 4 groups of double-layer net cages are set in the cement pool, each group of net cages is composed of two inner layer net cages and one outer layer net cage; Mesh, the mesh is 0.5 cm, the water retention depth is 10 cm; the height of the outer cage is 40 cm, made of 120-mesh sieve silk, the upper opening is fixed flat with the i...

technical field

[0001] The invention relates to a loach industrialized breeding seedling raising method, which belongs to the technical field of aquaculture. Background technique

[0002] In recent years, the scale of loach farming has developed rapidly, and seedlings have become a bottleneck restricting the development of the industry. The situation of buying seedlings from all over the country is still a prominent problem, and most of them are wild-caught seedlings. It is difficult to guarantee the quality of seedlings, which increases the risk of breeding. How to carry out large-scale reproduction, improve the fertilization rate and hatching rate of loach eggs, the survival rate of seedling cultivation, and reduce labor intensity and reproduction cost are the key points.

[0003] At present, loach seedlings are mostly bred in the open air, and a few rely on the four major domestic carp breeding facilities. The main methods are as follows: full artificial insemination, hat...

Examples

Embodiment 1

[0023] ⑴Construct a loach breeding workshop of 200 square meters, plastic greenhouse type, the roof is covered with a layer of sunscreen net, and the surroundings are open. A cement breeding pond is built indoors, 120 square meters, the depth of the pond is 0.8 meters, and the water injection is 0.5 meters.

[0024] ⑵Build a hatching and seedling workshop with an area of ​​1,200 square meters. The soil is flat and plastic shed-style. The roof is covered with a layer of sun-proof net, and there is a circle of gauze around it to prevent debris from entering and maintain ventilation. The two workshops are adjacent but relatively independent.

[0025] (3) 4 groups of double-layer net cages are set in the cement pool, each group of net cages is composed of two inner layer net cages and one outer layer net cage; Mesh, the mesh is 0.5 cm, the water retention depth is 10 cm; the height of the outer cage is 40 cm, made of 120-mesh sieve silk, the upper opening is fixed flat with the i...