Recessive white feather green-shelled-egg bantam germ plasma resource cultivation method

Abstract

Disclosed is a recessive white feather green-shelled-egg bantam germ plasma resource cultivation method. Green-shelled genes of green-shelled-egg chickens are introduced to recessive white feather bantam groups, recessive white feather genes, short-legged genes and the green-shelled genes are combined and homozygous by means of hybridization and test mating, a family is built on the basis, the groups are expanded in a breeding manner by the aid of family selection and individual selection, and recessive white feather bantam germ plasma resources with green-shelled-egg laying characteristics are cultivated. The cultivation method has the advantages that recessive white feather bantams are selected to improve the green-shelled-egg chickens, the green-shelled-egg chickens are changed into recessive white feather green-shelled-egg bantams, and the breeding problem of the green-shelled-egg chickens can be effectively solved. Short and small hens with small bodies are suitable for cage culture, consume less feed but lay eggs as many as normal individuals (so that feed efficiency is higher). Besides, the short and small hens have the outstanding advantages of early sexual maturity, reduction of raising space, disease resistance and the like, the production cost of goods generation chickens can be greatly reduced, comprehensive raising benefit is improved, recessive white feathers are recessive as compared with colored feathers of native chicken breeds, and feather colors of filial generations of the chickens in the same place are as same as those of indigenous chickens, so that feather color mixing can be avoided.

Description

technical field [0001] The invention relates to a method for cultivating chicken germplasm resources, which belongs to the technical field of breeding, in particular to a method for cultivating recessive white-feathered bantam green-shell hens. Background technique [0002] my country's local chicken breeds are rich in resources, with outstanding advantages and distinctive characteristics. For example, green-shell layer hens produce green-shell eggs with high nutritional value, which are rich in lecithin, amino acids, vitamins, and trace elements (iodine, zinc, selenium, etc.) Etc.), is a kind of nutritious good product, the market price is higher. my country's egg production has gradually reached a balance between supply and demand, and is changing from quantity-based to quality-based. The market share of foreign white-shell and brown-shell laying hens is gradually decreasing, while the production and consumption of local high-quality laying hens are growing rapidly. In rece...

AI Technical Summary

Problems solved by technology

However, the green-shell layer hens currently bred are generally colored feathers. After crossing with other native chickens, the feather color of the offspring is mixed and difficult to purify (the genetics of feather color are relatively complicated, and it takes a long process to purify feather color), which affects egg production. At the end, the sales of hens will be eliminated, which greatly limits the application of green-shell layer hens, a high-quality local chicken breed resource, in the breeding of matching lines (feather color is difficult to purify)