Metabolomics reveals the reasons for the occurrence of Pendulous-comb related to egg production performance
文献类型： 外文期刊
作者： Cai, Danfeng 1 ; Zhou, Zhen 1 ; Cai, Bolin 1 ; Wang, Zhijun 1 ; Ju, Xing 1 ; Kong, Shaofen 1 ; Yang, Xin 1 ; Lin, Duo 1 ; Nie, Qinghua 1 ;
作者机构： 1.South China Agr Univ, Coll Anim Sci, State Key Lab Conservat & Utilizat Subtrop Agrobio, Lingnan Guangdong Lab Agr, Guangzhou 510642, Guangdong, Peoples R China
2.Minist Agr, Guangdong Prov Key Lab Agroanim Genom & Mol Breedi, Guangzhou 510642, Guangdong, Peoples R China
3.Minist Agr, Key Lab Chicken Genet Breeding & Reprod, Guangzhou 510642, Guangdong, Peoples R China
4.Zhejiang Agr & Forestry Univ, Coll Anim Sci & Technol, Linan 311300, Peoples R China
关键词： chicken; untargeted metabolomic analysis; pendulous-comb; upright-comb; egg production performance
期刊名称：POULTRY SCIENCE （ 影响因子：4.2； 五年影响因子：4.5 ）
ISSN： 0032-5791
年卷期： 2024 年 103 卷 8 期
页码：
收录情况： SCI
摘要： The chicken comb is an essential secondary sexual characteristic to measure sexual maturity and is closely related to reproductive performance. Pendulous comb (PC) and upright comb (UC) are 2 common comb phenotypes in hens, which have been highly associated with egg production performance. However, the reasons for the formation of PC remain undetermined. In this study, we first characterized the PC and UC chicken at start (at 175 d age), peak (at 217 d age), and postlaying (at 300 d age) and found that PC and UC could transform for each other. Furthermore, we suggested that PC chicken demonstrated better egg production performance than UC chicken, especially characterizing comb type in the start-laying period. Moreover, we performed histological evaluation of PC and UC tissue, which suggested that the low density of collagen fibers and acid mucopolysaccharides might lead to the formation of PC. To further explore the possible reasons for PC formation, we performed an untargeted metabolomic analysis of serum between PC and UC chicken in the start, peak, and postlaying periods. The enrichment analysis of period- unique differentially expressed metabolites (DEMs) between PC and UC showed that the different metabolic pathways and nutritional levels might contribute to the formation of PC in the different laying periods. Our research provided critical insights into the phenotypic diversity of chicken comb, establishing a foundation for early selection of chicken egg production performance.
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