Selective breeding method for new variety of grain-saving green shank recessive white chickens

Abstract

The invention discloses a selective breeding method for a new variety of grain-saving green shank recessive white chickens and belongs to the technical field of molecular breeding. In the invention, by means of the molecular-assistant selection method, genotypes of chicken recessive white feather gene and sex-linked dwarf gene are identified, so that the genotypes can be quickly determined and thenew variety of grain-saving green shank recessive white chickens with genotype being cc / dwdw is produced. The method avoids complexness of test-cross selective breeding and reduces generation interval, and can breed the new variety of the grain-saving green shank recessive white chickens only after two generations, thus effectively reducing breeding cost. The grain-saving green shank recessive white chickens has small body size, consumes less feed, is low in basic metabolism and high in egg yield, has a delicious taste, is large in feeding density and high in feed conversion, can save cost, can be directly produced as commercial chicken and can be used in matching application.

Description

technical field [0001] The invention relates to a breeding method for a new strain of grain-saving blue-shin and white-feathered broiler chickens, in particular to a method for quickly identifying genotypes and gene fragment deletions by using PCR technology, and belongs to the technical field of poultry molecular breeding. Background technique [0002] With the continuous growth of people's economic income and the improvement of living standards, the indicators of poultry products in aspects such as taste, flavor and safety are more and more valued by consumers. At present, in broiler production, the number of imported fast and large white-feather broiler chickens or colored-feather broiler breeds has begun to decline, and the number of high-quality yellow-feather broiler chickens has continued to rise. Especially in most areas of our country, high-quality broilers with green feet and hemp feathers are more favored by consumers. The market price is about 15-40% higher than ...

AI Technical Summary

Problems solved by technology

But the main problem that exists in these cross-breeding complete sets is: because adopting the introduced fast-growing recessive white-feathered chicken breed in the complete set, firstly, the female parent consumes a lot of materials, which is uneconomical for production, and secondly, commercial chickens have more The external blood directly affects the flavor of the meat, and the complexity of seed production increases the production cost of commercial chickens. At the same time, commercial chickens have poor adaptability and are not suitable for the current ecological grazing breeding methods in my country.

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