Molecular marker affecting eriscerated yield of chicken and application of molecular marker

Abstract

The invention discloses a molecular marker affecting the eriscerated yield of chicken and application of the molecular marker, and belongs to the technical fields of molecular marker-assisted selection and animal genetics and breeding. The molecular marker affecting the eriscerated yield of chicken is obtained by genome-wide association (GWAS) analysis on 741 test chickens from F2 generation resource population formed by Daweishan miniature chickens and recessive white plymouth rock, nucleotide single base mutation T>C (named: Chr.1 100911059T>C) exists at 100911059bp on chromosome 1 of the chicken ginseng genome Gallus_gallus. GRCg6a version, a gene positioned nearby the nucleotide single base mutation is gene of CHODL (chondrolectin), and the chicken eriscerated yield is significantly affected by mutation. The invention discloses acquisition and application of the molecular marker. The invention also provides a genotyping detection method for the molecular marker affecting the chicken eriscerated yield. An efficient and accurate molecular marker-assisted breeding technology can be established by the method, and is applied to genetic improvement of chicken meat production performance, so that chicken meat production is increased.

Description

technical field [0001] The invention relates to the field of molecular marker-assisted selection technology and animal genetic breeding technology, in particular to a molecular marker affecting chicken eviscerated weight and its application. Background technique [0002] As the global population continues to grow, chicken and eggs are the two types of animal protein that can be purchased with the highest grams of animal protein per currency except milk, and they are relatively competitive in terms of production costs. In China, chicken is the second largest meat product, accounting for 15% of meat production, and its ratio is increasing year by year. In 2019, the output of pig, beef, mutton and poultry in my country was 76.49 million tons, of which, the output of beef was 6.67 million tons, an increase of 3.6%; the output of mutton was 4.88 million tons, an increase of 2.6%; the output of poultry was 22.39 million tons, an increase of 12.3%; 33.09 million tons, an increase o...

AI Technical Summary

Problems solved by technology

However, half of China's domestic chicken market is still white-feathered broiler chickens that are highly selected and bred abroad, which are easily affected by the price of foreign provenance, and the variety is diversified. However, the local seed industry has not really established an industry with local breeds as the core technology. The development model has led to a serious lag in the development and utilization of local resources. The work of using domestic chicken resources to breed new varieties is not in place, the breeding methods are backward, and there are few quantitative measurement equipment and facilities for some highly automated and accurate traits. Slow progress in the genetics of economically important traits such as transformation rates and disease resistance

This leads to low selection intensity in domestic chicken breeding, long breeding cycle, high breeding cost and low overall breeding efficiency

Facing the huge demand for chicken and the increasing status quo, although China’s domestic chicken enterprises have met some of the domestic demand for high-quality chicken, there is still a huge gap in the market as a whole, and the source and output are seriously insufficient. It is urgent to develop chicken breeding, Strengthen the domestic chicken breeding industry, cultivate new breeds (supporting lines), etc.

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