中国猪业2024，Vol.19Issue(3)：68-76,9.DOI:10.16174/j.issn.1673-4645.2024.03.007
基于SNP和ROH的泰山黑猪群体遗传结构分析
Genetic Structure Analysis of Taishan Black Pig Based on SNP and ROH
摘要
Abstract
The aim of the article was to analyze the genetic diversity and pedigree structure of the Taishan black pig population at the molecular level,provided a scientific theoretical basis for breeding and conservation efforts.In this study,the"Zhongxin No.1"chip was used to analyze the population genetic structure of 130 core Taishan black pigs.The results revealed that the average expected het-erozygosity(He)of the Taishan black pig breeding population was 0.367,with an average observed heterozygosity(Ho)of 0.397,The ef-fective population size(Ne)was 5.0,and the average polymorphic information content(PIC)of the Taishan black pig breeding population was 0.285.The average identity-by-state(IBS)genetic distance was 0.277,and the G matrix results were consistent with the IBS matrix,indicating a moderate kinship between Taishan black pig populations.A total of 2 777 runs of homozygosity(ROHs)were detected a-mong the 130 Taishan black pigs,with an average length of 6.21 Mb per ROH,ranging from 1.54 Mb to 187.61 Mb.The average in-breeding coefficient(FROH)based on ROH was 0.054.The 130 Taishan black pigs were divided into 1～4 lineages,with an additional lin-eage designated for sows.The above results indicated that the number of lineages within the Taishan black pig population was moderate,with a moderate degree of kinship among individuals and a low level of inbreeding,suggesting high genetic diversity within the popula-tion.Some lineages had a low number of boars,indicated a need for attention in the selection of descendants to avoid loss of genetic lin-eage.It was advisable to mate descendants with distant maternal kinship to gradually reduce the population's inbreeding coefficient.关键词
泰山黑猪/遗传/多样性/家系/结构/ROH/SNPKey words
Taishan black pig/genetic/diversity/pedigree/structure/ROH/SNP分类
农业科技引用本文复制引用
郭宝港,王明凯,于世浩,张文娟,申小冉,曾勇庆,陈伟..基于SNP和ROH的泰山黑猪群体遗传结构分析[J].中国猪业,2024,19(3):68-76,9.基金项目
泰安市科技创新重大专项(农业良种)项目(2022NYLZ09) （农业良种）
山东省生猪产业技术体系建设专项项目(SDAIT-08-02) （SDAIT-08-02）
