Ring-duct net cage for breeding of oriental weatherfish

Abstract

The invention belongs to the technical field of aquaculture, in particular to the technique enabling weatherfish to reproduce and lay eggs in a net cage disposed in a hatching ring duct and leads fertilized eggs to fall into the hatching ring duct from the net cage to be hatched directly in the hatching ring duct. A large net cage or a plurality of independent large net cages are disposed in the hatching ring duct to serve as a place for aphrodisiac injected parent weatherfish to mate and lay eggs, the net cages are removed while the parent weatherfish having laid eggs are removed after eggs are laid, and the eggs fall into the ring duct from meshes prior to directly being hatched. The large net cages of the hatching ring duct can effectively prevent the parent weatherfish from eating the eggs, the parent weatherfish is not easy to be hurt, loss of the eggs is low, and breeding effect is better. The method omits the egg transferring process, so that labor intensity is reduced greatly, and work efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and specifically relates to a method for allowing loach to breed and lay eggs in a net cage arranged in a hatching loop, and the fertilized eggs fall from the box into the hatching loop, and are directly carried out in the hatching loop on the spot. Incubation technology. Background technique [0002] Loach (Misgurnus anguillcaudatus) belongs to Cyprinidae, Cyprinidae, Loachidae, Anguillinae, and Loach genus; Paramisgurnus dabryanus Sauvage belongs to Cyprinidae, Cyprinidae, Loachidae, and Paraloach genus. Under normal circumstances, it is customary to collectively refer to paraloach and loach as loach. Loach is widely distributed in Japan, Korea, China and Southeast Asia. Loach has high nutritional value and medicinal value, and is known as "ginseng in water". Loach has always been popular in domestic and foreign markets. In recent years, the export volume of loach has increased year by y...

AI Technical Summary

Problems solved by technology

Because the loach body is small and smooth, it moves quickly, but it is easy to cause damage to loach eggs and parent loach during the process of transferring the parent loach

The spawning of parent loach will last for a long time, and the violent swimming and stirring of parent loach at this stage will cause most of the eggs to slip, making it difficult to increase the hatching rate of loach eggs hatched by fish nests

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