Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Identifying Genetic Architecture of Carcass and Meat Quality Traits in a Ningxiang Indigenous Pig Population

Shishu Yin
,
Gang Song
,
Ning Gao
,
Qin Zhang
,
Hu Gao
ORCID logo ,
Qinghua Zeng
,
Peng Lu
,
Kang Xu
* ORCID logo ,
Jun He
*
Version 1 : Received: 13 May 2023 / Approved: 15 May 2023 / Online: 15 May 2023 (07:25:43 CEST)

A peer-reviewed article of this Preprint also exists.

Yin, S.; Song, G.; Gao, N.; Gao, H.; Zeng, Q.; Lu, P.; Zhang, Q.; Xu, K.; He, J. Identifying Genetic Architecture of Carcass and Meat Quality Traits in a Ningxiang Indigenous Pig Population. Genes 2023, 14, 1308. Yin, S.; Song, G.; Gao, N.; Gao, H.; Zeng, Q.; Lu, P.; Zhang, Q.; Xu, K.; He, J. Identifying Genetic Architecture of Carcass and Meat Quality Traits in a Ningxiang Indigenous Pig Population. Genes 2023, 14, 1308.

Abstract

Ningxiang pig is renowned breed for its exceptional meat quality, but it possesses suboptimal carcass traits. To elucidate the genetic architecture of meat quality and carcass traits in Ningxiang pigs, we assessed heritability and executed a genome-wide association study (GWAS) concerning carcass length, backfat thickness, meat color parameters (L.LD, a.LD, b.LD), and pH at two postmortem intervals (45 minutes and 24 hours) within a Ningxiang pig population. Heritability estimates ranged from moderate to high (0.30 ~ 0.80) for carcass traits and from low to high (0.11 ~ 0.48) for meat quality traits. We identified 21 significant SNPs, the majority of which were situated within previously documented QTL regions. Furthermore, the HMGA1 gene emerged as a pleiotropic gene correlated with carcass length and backfat thickness. The ADGRF1, FKBP5, and PRIM2 genes were associated with carcass length, while the NIPBL gene was linked to backfat thickness. These genes hold potential for use in selective breeding programs targeting carcass traits in Ningxiang pigs.

Keywords

genome-wide association study; carcass length; meat color; genetic parameter

Subject

Biology and Life Sciences, Animal Science, Veterinary Science and Zoology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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