A kind of breeding method of loach with high survival rate

Abstract

The invention provides a high survival rate loach breeding method. The high survival rate loach breeding method comprises the following steps of preparing a breeding pool, disinfecting the breeding pool, selecting parent loach, preprocessing the parent loach, conducting spawning and hatching, temporarily breeding hatched loach fry, conducting intensified breeding in the breeding pool and conducting pool fry discharging or selling. The method is adopted for breeding the loach fry, the survival rate of the loach fry reaches up to 95%; an artificial induced spawning method is adopted, the spawning cycle is shortened, and the breeding efficiency is improved; when hatching is conducted, flow water flow hatching is adopted, and the phenomenon that fertilized eggs deposit on the bottom of the pool and die due to lack of oxygen is avoided; a thin net and a thick net are matched, the fertilized eggs can be effectively preventing from being pressed to death or eaten by the parent loach, and the hatching rate is improved.

Description

technical field [0001] The invention relates to the technical field of aquaculture, in particular to a method for breeding loach with a high survival rate. Background technique [0002] Loach contains high protein and low fat. The meat is fresh and tender, rich in nutrition, delicious in taste, rich in various vitamins and minerals, and has high nutritional and medicinal value. In recent years, due to overfishing, especially the flooding of electric-caught loach, coupled with the extensive use of pesticides harmful to loach in farmland and changes in farming systems, loach resources in natural waters and paddy fields have declined year by year, and artificially cultured loach has emerged. The artificial propagation technology of loach has been continuously improved by many domestic and foreign aquatic product scientific research units and aquatic product workers. At present, the most important method is to use small loach nursery ponds to raise them intensively. The surviva...

AI Technical Summary

Problems solved by technology

The artificial propagation technology of loach has been continuously improved by many aquatic scientific research institutes and aquatic workers at home and abroad. At present, the most important method is to use small loach nursery ponds to raise them intensively. After the loach seedlings grow to 3cm, they are put into adult loach ponds for breeding. The survival rate of the loach seedlings cultivated by the method is only 5%-10% when they grow to inch pieces (3cm long), and the domestic top level can only reach 20% when the loach water flower seedlings are directly put into pond culture, which seriously restricts the With the development of loach breeding industry in China, research has found that when loach seedlings grow to large size (5-8cm) seedlings, and then put in ponds for breeding, the survival rate of loach can be as high as 90%.

However, the level of domestic seedling cultivation is backward, and the fertilization rate of loach is low. The survival rate from loach fertilization to large-scale seedlings (5-8cm) is only 10%-20%, which seriously restricts scale. The demand for farmed loach