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Comparative analysis of the hypothalamus transcriptome of laying ducks with different residual feeding intake

文献类型： 外文期刊

作者： Guo, Rongbing 1 ; Zeng, Tao 2 ; Wang, Dandan 1 ; Zhao, Ayong 1 ; Zhou, Shiheng 4 ; Huang, Zhizhou 4 ; Chang, Yuguang 2 ; Sun, Hanxue 2 ; Gu, Tiantian 2 ; Chen, Li 2 ; Tian, Yong 2 ; Xu, Wenwu 2 ; Lu, Lizhi 1 ;

作者机构： 1.Zhejiang A&F Univ, Coll Anim Sci & Vet Med, Coll Vet Med, Hangzhou 311300, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Anim Sci & Vet, State Key Lab Managing Biot & Chem Threats Qual &, Hangzhou 310021, Peoples R China

3.Minist Agr & Rural Affairs China, Key Lab Informat Traceabil Agr Prod, Hangzhou 310021, Peoples R China

4.Cherry Valley Farms Xianghe Co Ltd, Langfang 461300, Peoples R China

关键词： Shan Partridge ducks; hypothalamus; residual feed intake; RNA-seq; serum hormone

期刊名称：POULTRY SCIENCE （ 影响因子：4.4； 五年影响因子：4.4 ）

ISSN： 0032-5791

年卷期： 2024 年 103 卷 3 期

页码：

收录情况： SCI

摘要： Feed costs account for approximately 60 to 70% of the cost of poultry farming, and feed utilization is closely related to the profitability of the poultry industry. To understand the causes of the differences in feeding in Shan Partridge ducks, we compared the hypothalamus transcriptome profiles of 2 groups of ducks using RNA-seq. The 2 groups were: 1) low -residual feed intake (LRFI) group with low feed intake but high feed efficiency, and 2) high -residual feed intake (HRFI) group with high feed intake but low feed efficiency. We found 78 DEGs were enriched in 9 differential Kyoto Encyclopedia of Genes and Genome (KEGG) pathways, including neuroactive ligandreceptor interaction, GABAergic synapse, nitrogen metabolism, cAMP signaling pathway, calcium signaling pathway, nitrogen metabolism, tyrosine metabolism, ovarian steroidogenesis, and gluconeogenesis. To further identify core genes among the 78 DEGs, we performed protein -protein interaction and coexpression network analyses. After comprehensive analysis and experimental validation, 4 core genes, namely, glucagon (GCG), cholecystokinin (CCK), gamma-aminobutyric acid type A receptor subunit delta (GABRD), and gamma-aminobutyric acid type A receptor subunit beta1 (GABRB1), were identified as potential core genes responsible for the difference in residual feeding intake between the 2 breeds. We also investigated the level of cholecystokinin (CCK), neuropeptide Y (NPY), peptide YY (PYY), ghrelin, and glucagonlike peptide1 (GLP-1) hormones in the sera of Shan Partridge ducks at different feeding levels and found that there was a difference between the 2 groups with respect to GLP-1 and NPY levels. The findings will serve as a reference for future research on the feeding efficiency of Shan Partridge ducks and assist in promoting their genetic breeding.

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