Integrative Analysis of Transcriptomics and Metabolomics Provides Insights into Meat Quality Differences in Hu Sheep with Different Carcass Performance
文献类型： 外文期刊
作者： Zhang, Xiaoxue 1 ; Zhao, Liming 2 ; Tian, Huibin 2 ; Ma, Zongwu 2 ; Zhang, Qi 2 ; Pu, Mengru 2 ; Cao, Peiliang 1 ; Zhang, Deyin 2 ; Zhang, Yukun 2 ; Zhao, Yuan 2 ; Cheng, Jiangbo 2 ; Xu, Quanzhong 2 ; Xu, Dan 2 ; Yang, Xiaobin 2 ; Li, Xiaolong 2 ; Wu, Weiwei 3 ; Li, Fadi 2 ; Wang, Weimin 1 ;
作者机构： 1.Gansu Agr Univ, Coll Anim Sci & Technol, Lanzhou 730070, Peoples R China
2.Lanzhou Univ, State Key Lab Herbage Improvement & Grassland Agro, Coll Pastoral Agr Sci & Technol,Minist Educ, Engn Res Ctr Grassland Ind,Minist Agr & Rural Affa, Lanzhou 730020, Peoples R China
3.Xinjiang Acad Anim Sci, Inst Anim Sci, Urumqi 830011, Peoples R China
关键词： Hu sheep; meat quality traits; carcass performance; transcriptomics; metabolomics
期刊名称：FOODS （ 影响因子：5.1； 五年影响因子：5.6 ）
ISSN：
年卷期： 2025 年 14 卷 14 期
页码：
收录情况： SCI
摘要： Meat quality is a critical determinant of consumer preference and economic value in the livestock industry. However, the relationship between carcass performance and meat quality remains poorly understood. In our study, we conducted an integrative analysis of transcriptomics and metabolomics to investigate the molecular mechanisms underlying meat quality differences in Hu sheep with high (HHS, n = 10) and low (LHS, n = 10) carcass performance. Phenotypic analysis revealed that the HHS group exhibited superior meat quality traits, including higher intramuscular fat (IMF) content (reflected in elevated marbling scores), along with lower shear force, drip loss, and cooking loss, compared to the LHS group. Transcriptomic analysis identified 376 differentially expressed genes (DEGs) enriched in pathways linked to lipid metabolism, such as the PPAR signaling pathway and long-chain fatty acid metabolic process. Weighted gene co-expression network analysis (WGCNA) revealed important modules and key genes (e.g., ELOVL6, PLIN1, and ARHGEF2) associated with meat quality traits. Metabolomic profiling identified 132 differentially accumulated metabolites (DAMs), with significant enrichment in amino acid metabolism pathways, including D-amino acid metabolism, arginine biosynthesis, and glycine, serine, and threonine metabolism. Integrative analysis of transcriptomic and metabolomic data highlighted six co-enriched pathways, such as the mTOR signaling pathway and amino acid metabolism, underscoring their role in regulating meat quality. These findings provide valuable insights into the genetic and metabolic networks driving meat quality variation and offer potential biomarkers for genetic selection and nutritional strategies to enhance both carcass yield and eating quality in Hu sheep. This research enhances knowledge of the molecular basis of meat quality and supports precision breeding in livestock production.
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