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Cuticle deposition duration in the uterus is correlated with eggshell cuticle quality in White Leghorn laying hens

文献类型： 外文期刊

作者： Chen, Xia 1 ; He, Zhaoxiang 1 ; Li, Xingzheng 1 ; Song, Jianlou 1 ; Huang, Mingyi 1 ; Shi, Xuefeng 1 ; Li, Xianyu 1 ; Li, Junying 1 ; Xu, Guiyun 1 ; Zheng, Jiangxia 1 ;

作者机构： 1.China Agr Univ, Coll Anim Sci & Technol, Natl Engn Lab Anim Breeding, Beijing 100193, Peoples R China

2.China Agr Univ, Coll Anim Sci & Technol, MOA Key Lab Anim Genet & Breeding, Beijing 100193, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Inst Anim Husb & Vet Med, Beijing 100097, Peoples R China

4.Chinese Acad Agr Sci, Shenzhen Agr Genome Res Inst, Shenzhen 440307, Peoples R China

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.996； 五年影响因子：5.516 ）

ISSN： 2045-2322

年卷期： 2021 年 11 卷 1 期

页码：

收录情况： SCI

摘要： The cuticle formed in the uterus is the outermost layer as the first defense line of eggshell against microbial invasions in most avian species, and analyzing its genetic regulation and influencing factors are of great importance to egg biosecurity in poultry production worldwide. The current study compared the uterine transcriptome and proteome of laying hens producing eggs with good and poor cuticle quality (GC and PC, the top and tail of the cuticle quality distribution), and identified several genes involved with eggshell cuticle quality (ESCQ). Overall, transcriptomic analysis identified 53 differentially expressed genes (DEGs) between PC versus GC group hens, among which 25 were up-regulated and 28 were down-regulated. No differences were found in the uterine proteome. Several DEGs, including PTGDS, PLCG2, ADM and PRLR related to uterine functions and reproductive hormones, were validated by qPCR analysis. Egg quality measurements between GC and PC hens showed GC hens had longer laying interval between two consecutive ovipositions (25.64 +/- 1.23 vs 24.94 +/- 1.12 h) and thicker eggshell thickness (352.01 +/- 23.04 vs 316.20 +/- 30.58 mu m) (P < 0.05). Apart from eggshell traits, other egg quality traits didn't differ. The result demonstrated eggshell and cuticle deposition duration in the uterus is one of the major factors affecting ESCQ in laying hens. PTGDS, PLCG2, ADM and PRLR genes were discovered and might play crucial roles in cuticle deposition by regulating the uterine muscular activities and secretion function. The findings in the present study provide new insights into the genetic regulation of cuticle deposition in laying hens and establish a foundation for further investigations.

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