Molecular marker related to sow reproductive traits, screening method and application
A technology of molecular marker and screening method, applied in the field of swine genetics, can solve the problems of limited number of QTL and inability to detect the resolution of multiple allele mapping, and achieve the effect of improving farrowing performance and reproductive traits.
Active Publication Date: 2022-04-08
FOSHAN UNIVERSITY
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Problems solved by technology
[0003] The reproductive traits of pigs are controlled by multiple genes. The traditional QTL mapping method is suitable for the study of rare genes and the population can be controlled. The purpose and results are highly predictable. Loci where parents differ in segregating populations with no detection of multiple alleles and low mapping resolution
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Embodiment 1
[0043] A screening method for molecular markers related to reproductive traits of sows.
[0044] 1. Obtain phenotype-pedigree data and SNP molecular markers.
[0045] (1) Phenotype-pedigree data collection.
[0046] The research population in this example is purebred sows of Landrace and Large White, all of which come from the core group of breeding pigs of Guangxi Yangxiang Co., Ltd. From 2018 to 2021, 3,369 Landrace and 4,531 Large White sows were simultaneously recorded for their total number of litters and total number of live piglets. The number of effective records for the litter traits of Landrace and Large White sows was 12,096 and 14,323, respectively. 3 generations.
[0047] (2) Obtain SNP molecular markers.
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The invention relates to a molecular marker related to sow reproductive traits, a screening method and application, and relates to the technical field of pig genetic genes. The molecular marker is an SNP (Single Nucleotide Polymorphism) molecular marker and is located at the position of 96673697 bp of a pig chromosome 1 or the position of 58587289 bp of a pig chromosome 10, and a pig reference genome is Sscrofa11.1; the 96673697bp position of the pig chromosome 1 is Cgt; in the mutation site of T mutation, the 58587289bp position of the pig chromosome 10 is Cgt; the mutation site of T mutation is shown in the description. The breeding traits of sows with different genotypes of the molecular marker have extremely significant differences, sows selected and reserved according to the molecular marker can reserve sows with a high total farrowing number and a high total alive number, the breeding traits of the sows can be improved, and the farrowing performance of the sows can be improved.
Description
technical field [0001] The invention relates to the technical field of pig genetics, in particular to a molecular marker related to reproductive traits of sows and a screening method and application. Background technique [0002] my country has a long history of pig raising, and the end product of pig raising is mainly pork, which is the most common meat product in daily life, and its output ranks first in meat products. In actual breeding work, the total number of litters born and the number of live piglets are the most important indicators for evaluating the production of sows, and they are also one of the important reproductive and economic traits of sows, which directly affect the economic benefits of pig farms. Factors affecting the reproductive performance of sows include breed, age, environment, feeding management, hormone levels, nutrition and genetics, among which genetics is the main factor. Large-scale pig farms must select excellent varieties with high reproducti...
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IPC IPC(8): C12Q1/6888C12N15/11
CPCY02P60/87
Inventor 赵云翔张瑞琪马姝高广雄李智丽周玉孙艳梅何健
Owner FOSHAN UNIVERSITY
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