Crossbreeding method for green-shell laying hens

Abstract

The invention discloses a crossbreeding method for green-shell laying hens. The crossbreeding method comprises the following steps: (1) selecting five-black green-shell laying hen cocks with 'five-black and one-green 'character characteristics, performing green-shell egg genotype detection, and selecting and remaining the five-black green-shell laying hen cocks with double dominant green-shell egg genotypes as hybrid male parents; (2) selecting a commercial generation hen of a high-yield laying hen variety (strain or commercial strain) for producing pink-shell eggs as a female parent; and (3) hybridizing the male parent obtained in the step (1) with the female parent obtained in the step (2) to obtain high-yield commercial green-shell laying hens. The crossbreeding method for green-shell laying hens has the beneficial effects that the five-black green-shell laying hens subjected to gene screening are used as the male parent, commodity generations of the high-yield laying hen variety (strains or commercial strains) are used as the female parent, the commodity generations of the green-shell laying hens are hybridized, the variety advantages of the five-black green-shell laying hens are reserved to the maximum extent, 100% of green-shell eggs are produced, the laying rate, the egg weight and the feed conversion rate are improved, and the feeding cost is greatly reduced.

Description

technical field [0001] The invention relates to a breeding method in animal husbandry, in particular to a method for hybrid breeding of green-shell laying hens. Background technique [0002] Wuhei green-shell layer hen is a famous breed of national livestock and poultry genetic resources protection in my country. "Five blacks and one green" are its distinctive features, namely black fur, black skin, black meat, black bones, black internal organs, and green-shelled eggs. It has the meat quality characteristics of black-bone chickens and the characteristics of green-shelled eggs produced by pheasants. Green-shelled eggs have better visual effects in appearance, which is in line with people's consumption habits of pursuing health and greenness; green-shelled eggs have high shell strength, which is conducive to reducing the damage caused by damage during the process of processing, transportation, storage and finally entering the market. Green-shell eggs have low cholesterol con...

AI Technical Summary

Problems solved by technology

However, as a local breed, Wuhei green-shell hens are wild and are suitable for stocking. The production performance is low, the annual egg production is less than 180, and the green-shell egg rate is only about 70%, and the feed conversion rate is low.