BRIEF RESEARCH REPORT article
Front. Genet.
Sec. Livestock Genomics
Volume 16 - 2025 | doi: 10.3389/fgene.2025.1593395
This article is part of the Research TopicFrom Genes to Traits: Understanding Phenotypic Variation in LivestockView all 9 articles
Genome-wide analysis of genetic loci and candidate genes related to teat number traits in Dongliao black pigs
Provisionally accepted
Changyi Chen1Juan Ke1Junwen Fei1Ke Luo1Yu Cheng1Huimin Yu1Chao Cheng2Yiqing Yan1Xiaoran Zhang1
Shuang Liang1
Hao Sun1*Chunyan Bai1*Boxing Sun1*- 1College of Animal Science, Jilin University, Changchun, China
- 2Jilin Shuangtian Ecological Agriculture Co., LTD, Changchun, China
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This study investigated the genetic basis of teat number variation in Dongliao black pigs. A total of 765 pigs were genotyped using the Porcine 50K SNP chip, and their teat numbers were recorded. Heritability estimates for total teat number (TTN) and teat pair number (TPN) were 0.091 and 0.097, respectively. Genome-wide association studies identified 74 significant SNPs for TTN and 105 for TPN. Nine candidate genes related to the teat number were identified: CSNK1G1, PLEKHM2, CABLES1, SLC25A21, RYR3, PIGH, GUCY1A1, RAPGEF2, and TRPC4AP. These findings provide insights into the genetic architecture of teat number variation in Dongliao black pigs.
Keywords: Dongliao black pig, Teat number, GWAS, heritability, RYR3, PIGH
Received: 14 Mar 2025; Accepted: 29 Apr 2025.
Copyright: © 2025 Chen, Ke, Fei, Luo, Cheng, Yu, Cheng, Yan, Zhang, Liang, Sun, Bai and Sun. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Hao Sun, College of Animal Science, Jilin University, Changchun, China
Chunyan Bai, College of Animal Science, Jilin University, Changchun, China
Boxing Sun, College of Animal Science, Jilin University, Changchun, China
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