文献类型： 外文期刊

作者： Ma, Zongwu ¹ ; Wang, Weimin ³ ; Zhang, Deyin ³ ; Zhang, Yukun ³ ; Zhao, Yuan ³ ; Li, Xiaolong ³ ; Zhao, Liming ³ ; Cheng, Jiangbo ³ ; Xu, Dan ¹ ; Yang, Xiaobin ¹ ; Liu, Jia ¹ ; He, Lijuan ¹ ; Chen, Zhanyu ¹ ; Gong, Ping ¹ ; Zhang, Xiaoxue ¹ ;

作者机构： 1.Gansu Agr Univ, Coll Anim Sci & Technol, Lanzhou 730070, Gansu, Peoples R China

2.Xinjiang Acad Anim Sci, Inst Anim Husb Qual Stand, Urumqi 830057, Peoples R China

3.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosystems, Lanzhou 730020, Gansu, Peoples R China

关键词： Feed efficiency; PLIN1; MOGAT1; Single nucleotide polymorphisms; Hu sheep

期刊名称：GENE （ 影响因子：3.5； 五年影响因子：3.3 ）

ISSN： 0378-1119

年卷期： 2024 年 897 卷

页码：

收录情况： SCI

摘要： Feed cost accounts for a high proportion of sheep production, and improving sheep's utilization of feed will reduce production costs and improve economic benefits. The purpose of this study was to investigate the expression characteristics of PLIN1 and MOGAT1 genes and the relationship between their polymorphisms and feed efficiency traits in Hu sheep, and to find molecular Genetic marker that can be used in breeding. The expression levels of PLIN1 and MOGAT1 genes in various tissues were determined using quantitative real-time PCR (qRT-PCR). The results showed that PLIN1 and MOGAT1 genes were widely expressed in heart, liver, spleen, lungs, kidneys, rumen, duodenum, muscle, lymph, and tail fat. The PLIN1 gene had the highest expression level in in the tail fat compared to the other nine tissues. The expression levels of MOGAT1 gene in liver, tail fat, lung and heart was significantly higher than in kidney, muscle and lymph. The expression level of MOGAT1 was lowest in muscle compared to the other tissues (heart, liver, spleen, lung, rumen and tail fat). We recorded the body weight (BW80 and BW180) and feed intake (FI) information of 985 male Hu sheep at 80 and 180 days of age, and calculated the daily average feed intake (ADFI), average daily gain (ADG), and feed conversion rate (FCR) from 80 to 180 days of age. Two intronic mutations, g.18517910 A > G and g.224856118 G > C, were identified in PLIN1 and MOGAT1 genes by PCR amplification and Sanger sequencing. MassARRAY (R) SNP detection technology was used to genotype the DNA of 985 Hu sheep and analyze its association with feed efficiency traits. The results showed that the SNP g.18517910 A > G was significantly associated with BW80, BW180, FI, ADFI and FCR (P < 0.05), while SNP g.2248561118 G > C was significantly associated with FCR (P < 0.05). Meanwhile, significant differences were also observed in different combinations of genotypes (P < 0.05). Therefore, these two polymorphic loci can serve as candidate molecular markers for improving feed utilization efficiency in Hu sheep.