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Genetic Structure Analysis of Hetao Big-ear Pig Population Based on Genomic SNP and ROH
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Ming TIAN1, Wenqing WANG2, Shizhe CHENG3, Xinmiao HE1, Wentao WANG1, Saihui WU1, Kun WANG4, Hushan LI5, Weijie WANG5, Longchao ZHANG6, Di LIU1
Acta Veterinaria et Zootechnica Sinica | 2026, 57(2) : 659 - 667
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Acta Veterinaria et Zootechnica Sinica | 2026, 57(2): 659-667
• ANIMAL GENETICS AND BREEDING •
Genetic Structure Analysis of Hetao Big-ear Pig Population Based on Genomic SNP and ROH
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Ming TIAN1, Wenqing WANG2, Shizhe CHENG3, Xinmiao HE1, Wentao WANG1, Saihui WU1, Kun WANG4, Hushan LI5, Weijie WANG5, Longchao ZHANG6, Di LIU1
Affiliations
  • 1.Institute of Animal Science，Heilongjiang Academy of Agricultural Sciences，Harbin 150086，China
  • 2.Wuyuan County Livestock Workstation，Bayannur 015000，China
  • 3.Bayannur Agriculture and Animal Husbandry Bureau，Bayannur 015000，China
  • 4.College of Animal Science and Technology，Northeast Agricultural University，Harbin 150086，China
  • 5.Bayannur Livestock Service Center，Bayannur 015000，China
  • 6.Institute of Animal Sciences，Chinese Academy of Agricultural Sciences，Beijing 100193，China
Published: 2026-02-23 doi: 10.11843/j.issn.0366-6964.2026.02.008
Outline
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This study aimed to systematically evaluate the population genetic characteristics of Hetao Big-ear pigs using genomic approaches， providing scientific basis for the conservation of their germplasm resources. Based on 50K SNP chip data， Using software such as plink （v1.90）， GCTA （v1.93）， and MEGAX （v10.0） for analysis， PCA， genetic distance， kinship relationship， inbreeding coefficient， and phylogenetic tree information were obtained. Multi-dimensional analysis methods were used to detect 78 Hetao Big-ear pigs. Population structure analysis revealed that the population could be divided into 4 subgroups， with an average genetic distance of 0.793， and 6 sire lineages forming the foundation of its pedigree. Analysis of genomic runs of homozygosity （ROH） detected a total of 2 601 segments， with individuals carrying an average of 21 ROHs and an average length of 7.77 Mb. The population inbreeding coefficient （FROH ） was 0.13. Comprehensive analysis indicated that this population exhibits characteristics including a limited number of lineages， relatively few sire bloodlines， moderate kinship relationships， and low inbreeding levels. These findings at the genomic level provide important references for the population optimization and genetic improvement of Hetao Big-ear pigs.

Hetao Big-ear pig  /  population structure  /  runs of homozygosity （ROH）  /  single nucleotide polymorphism （SNP）  /  genetic diversity
田明, 王文清, 程士哲, 何鑫淼, 王文涛, 吴赛辉, 王坤, 李虎山, 王玮婕, 张龙超, 刘娣. 基于基因组的SNP和ROH的河套大耳猪群体遗传结构解析. 畜牧兽医学报, 2026 , 57 (2) : 659 -667 . DOI: 10.11843/j.issn.0366-6964.2026.02.008
Ming TIAN, Wenqing WANG, Shizhe CHENG, Xinmiao HE, Wentao WANG, Saihui WU, Kun WANG, Hushan LI, Weijie WANG, Longchao ZHANG, Di LIU. Genetic Structure Analysis of Hetao Big-ear Pig Population Based on Genomic SNP and ROH[J]. Acta Veterinaria et Zootechnica Sinica, 2026 , 57 (2) : 659 -667 . DOI: 10.11843/j.issn.0366-6964.2026.02.008
Appendix
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Year 2026 volume 57 Issue 2
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Article Info
doi: 10.11843/j.issn.0366-6964.2026.02.008
  • Receive Date：2025-06-18
  • Online Date：2026-09-16
  • Published：2026-02-23
Article Data
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History
  • Received：2025-06-18
Funding
Affiliations
    1.Institute of Animal Science，Heilongjiang Academy of Agricultural Sciences，Harbin 150086，China
    2.Wuyuan County Livestock Workstation，Bayannur 015000，China
    3.Bayannur Agriculture and Animal Husbandry Bureau，Bayannur 015000，China
    4.College of Animal Science and Technology，Northeast Agricultural University，Harbin 150086，China
    5.Bayannur Livestock Service Center，Bayannur 015000，China
    6.Institute of Animal Sciences，Chinese Academy of Agricultural Sciences，Beijing 100193，China

Corresponding:

LIU Di， E-mial：
ZHANG Longchao， E-mail：
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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