A kind of family breeding method of pearly white strain red tilapia

Abstract

The invention provides a family breeding method for pearl white strain red tilapia. The method includes the steps that (1) parent fish selection is conducted, the red tilapia with the pearl white body surface and the whole body being free of red spots or black spots is picked out from a red tilapia group with serious body color differentiation, and the red tilapia with obvious growth advantages is used as standby parents; (2) family establishment is conducted, the selected male and female parents are placed into a net cage for carrying out adaptation reinforcement cultivation, and manual orientation mating, hatching and seedling cultivating are independently performed according to the proportion of one to one; (3) pearl white strain breeding of the red tilapia is conduced, the growing juvenile fish stage and the adult fish stage of the red tilapia are determined, the pearl white red tilapia family with the high proportion and good growth traits are screened out to be used as the breeding base family of the next generation, 2-4 generation breeding is conducted according to the method, and accordingly the pearl white strain red tilapia can be bred. By the adoption of the method, inbreeding is avoided, the variety degeneration of the red tilapia is effectively prevented, and the population genetic diversity is kept; the breeding process is accelerated, and the breeding efficiency is improved.

Description

technical field [0001] The invention relates to a family breeding method of pearly white strain red tilapia, belonging to the technical field of aquaculture. Background technique [0002] Red tilapia is a mutant hybrid of Nile tilapia and Mozambique tilapia. Red tilapia has a round and thick body, high meat yield, fresh and tender meat, bright body color, fresh taste, no small spines between muscles, and no black film in the body cavity, which is suitable for different groups of people. In Southeast Asia, the market share of red tilapia is more than 60%, while in my country, the red tilapia industry is in its infancy and the market space is huge. At present, the sources of red tilapia species in my country are complicated, and there are no effective breeding measures for species conservation, which makes the problems of red tilapia germplasm degradation and body color separation increasingly serious. Therefore, it is imminent to carry out improved breeding of red tilapia. ...

AI Technical Summary

Problems solved by technology

[0003] At present, the breeding work of red tilapia mainly uses growth traits as the purpose traits for breeding, while the work of family selection for body color as the purpose traits has not been reported