文献类型： 外文期刊
作者： Tian, Jinghong 1 ; Tan, Liangtian 1 ; Wei, Shenghua 1 ; Zhu, Weijian 5 ; Ji, Congliang 5 ; Yao, Zipei 1 ; Xu, Yibin 1 ; Nie, Qinghua 1 ;
作者机构： 1.South China Agr Univ, State Key Lab Livestock & Poultry Breeding, Guangzhou 510642, Peoples R China
2.South China Agr Univ, Lingnan Guangdong Lab Agr, Guangzhou 510642, Peoples R China
3.Guangzhou Prov Key Lab Agroanim Genom & Mol Breedi, Guangzhou 510642, Peoples R China
4.Minist Agr & Rural Affair, Key Lab Chicken Genet Breeding & Reprod, Guangzhou 510642, Peoples R China
5.Wens Foodstuff Grp Co Ltd, Yunfu 527400, Guangdong, Peoples R China
关键词： Muscovy duck; sexual dimorphism; growth and development; RNA-seq; 16S rRNA sequencing technology
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 7 期
页码：
收录情况： SCI
摘要： Sexual dimorphism in poultry, especially in Muscovy ducks, is a proven phenomenon characterized by signi ficant differences in body weight, growth patterns, and gene expression between male and female individuals. However, there is a dearth of research on the candidate genes and mechanisms underlying these weight differences. We selected 301 Muscovy ducks and recorded their weekly body weights from birth. We utilized 3 non -linear growth models (Logistic, Bertalanffy, and Gompertz) to fi t the growth curve of Muscovy ducks, it was found that the logistic model was the most suitable model for describing the growth curve of Muscovy ducks. The results from the logistic model showed that the in flection point of male Muscovy ducks occurred at a later age, and they had a heavier mature body weight than female Muscovy ducks. At 10 wk of age, we collected Muscovy duck breast muscle tissues for transcriptome sequencing ( RNA-seq ). To exclude the impact of weight difference, 185 differentially expressed genes ( DEGs ), such as PPAR, FABP3, PLIN1 , and FOXO1 , were screened. These DEGs were predominantly enriched in terms related to mitochondria, lipids, and nucleic acids. In addition, the gut microbiota has the ability to in fluence host physiology through the regulation of multiple processes, including playing a crucial role in host muscle growth and development. We randomly selected male and female Muscovy ducks for 16S rRNA sequencing analysis of their cecal microbiota. The results showed that there were signi ficant differences in the composition of cecal microbiota between male and female Muscovy ducks. At the genus level, the relative abundance of Enterenecus and CAG_269 were lower in males compared to females, while Lawsonibacter, Parabacteroides_B, Streptococcus, UBA2658, Caccousia , and Butyricimonas were higher in males than in females. In summary, this study provides a scienti fic theoretical basis for revealing the different growth patterns of male and female Muscovy ducks, and offers explanations from both the molecular level and microbiological perspectives.
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