Koi culture method

Abstract

The invention relates to the field of koi culture, and particularly relates to a koi culture method, comprising the following steps obtaining roes of female parent fish of koi by adopting a manual primary intraperitoneal injection odinagogue, wherein the spawning efficiency time is 11-20h, and the weight relative fecundity is about 98.16 / g; then, performing conventional dry-method insemination according to a volume ratio between a semen diluent and roe of 1:2 or 3:4, and waiting for 1-2min after insemination of the roes; then immediately performing artificial roe layout, with the method of slowly moving a hatching mesh or hatching cup, so that the roes can be uniformly attached to the hatching mesh to the greatest extent, and toe overlapping or leakage in a hatching barrel is reduced. After artificial hatching, performing seedling culture. By adopting the koi culture method disclosed by the invention, the fertility rate of is 98.47% on average, the hatching rate is 87.52% on average, and the death rate of the parent fish after delivery is 0. The koi culture method disclosed by the invention has important significance to the large-scale culture of the koi and promotion of the high-quality good prepotency rate.

Description

technical field [0001] The invention relates to the field of fish breeding, in particular to a breeding method for koi. Background technique [0002] In recent years, koi is a kind of large ornamental fish that is popular in the market. The fish is famous all over the world for its vigorous body, gorgeous color, gorgeous markings, chic swimming style, and docile habits. It is called "living gem in water" and "swimming artwork". But the artificial propagation method of brocade carp continues to use the method for eating carp always at present, and fertilization rate and hatching rate are all not high. [0003] Because of its strong ornamental value, the purpose of breeding koi is often to obtain higher-quality individuals, which is different from the purpose of breeding food fish, which is to pursue a larger number of offspring and faster growth rates. Therefore, the breeding of food carp It is often impossible to obtain high-quality koi by breeding koi with this method; in...

AI Technical Summary

Problems solved by technology

However, the artificial propagation method of koi carp is still using the method of eating carp at present, and the fertilization rate and hatching rate are not high.

[0003] Because of its strong ornamental value, the purpose of breeding koi is often to obtain higher-quality individuals, which is different from the purpose of breeding food fish, which is to pursue a larger number of offspring and faster growth rates. Therefore, the breeding of food carp It is often impossible to obtain high-quality koi by breeding koi with this method; in addition, because koi broodstock are more precious and of high value, it is not possible to select a male broodstock and multiple female broodstock according to a certain ratio of male and female like eating koi. reproduce

On the other hand, in the process of artificial incubation of fertilized eggs, the existing technology adopts artificial fish nests, which may easily lead to the death of fertilized eggs due to poor water flow and difficult cleaning.