绵羊FUT8基因多态性及其与生长性状的关联分析

doi:10.16431/j.cnki.1671-7236.2022.10.016

摘要/Abstract

摘要： 【目的】研究岩藻糖基转移酶8(fucosyltransferase 8,FUT8)基因g.74522417 C＞T位点多态性及其对绵羊生长性状的影响,为绵羊分子育种筛选新的遗传标记。【方法】采用Sequenom MassARRAY? SNP分型技术、Illumina OvineSNP 600K BeadChip及Illumina OvineSNP 50K BeadChip芯片检测技术对湖羊(n=992)和乌珠穆沁羊群体(n=333)FUT8基因g.74522417 C＞T位点进行分型,并将其多态性与湖羊和乌珠穆沁羊的生长性状进行关联分析。【结果】FUT8基因g.74522417 C＞T位点在乌珠穆沁羊和湖羊群体中均检测出3种基因型:CC、TC和TT。群体遗传分析表明,g.74522417 C＞T位点在乌珠穆沁羊和湖羊群体中均处于中度多态(0.25＜PIC＜0.50)。卡方适应性检验结果表明,g.74522417 C＞T位点在乌珠穆沁羊和湖羊群体中均处于哈代-温伯格平衡状态(P＞0.05)。关联分析结果表明,FUT8基因g.74522417 C＞T位点与乌珠穆沁羊4月龄体长和6月龄体高均呈显著相关(P＜0.05);与湖羊3月龄管围、5月龄腰角宽和管围、6月龄眼肌面积和管围均呈显著或极显著相关(P＜0.05;P＜0.01)。【结论】FUT8基因g.74522417 C＞T位点可作为绵羊生长发育潜在分子标记,为FUT8基因在绵羊分子育种中的应用提供参考。

关键词: 绵羊; FUT8基因; 多态性; 生长性状

Abstract: 【Objective】 This study was aimed to explore the polymorphism of fucosyltransferase 8 (FUT8) gene g.74522417 C＞T and its effect on the growth traits in sheep,and screen the new genetic markers that could be used for molecular breading in sheep.【Method】 The g.74522417 C＞T of FUT8 gene in Hu sheep (n=992) and Ujumqin sheep (n=333) were typed by Sequenom MassARRAY? SNP typing technology,Illumina OvineSNP 600K BeadChip and Illumina OvineSNP50K BeadChip chip detection technology,and analyzed the association between g.74522417 C＞T and growth traits in Hu and Ujumqin sheep.【Result】 There were three genotypes (CC,TC and TT) of FUT8 gene g.74522417 C＞T in Hu and Ujumqin sheep,respectively.Population genetic analysis showed that g.74522417 C＞T was in moderate polymorphism in Hu and Ujumqin sheep (0.25＜PIC＜0.50).The result of χ²test showed that g.74522417 C＞T was in Hard-Weinberg equilibrium in two sheep population (P＞0.05).Association analysis revealed that FUT8 gene g.74522417 C＞T was significantly associated with body length at 4 months of age and body height at 6 months of age in Ujumqin sheep (P＜0.05),was significantly or extremely significantly associated with shin circumference at 3 months of age,waist angle width and shin circumference at 5 months of age,and loin muscle area and shin circumference at 6 months of age in Hu sheep (P＜0.05 or P＜0.01).【Conclusion】 FUT8 gene g.74522417 C＞T could be used as a potential molecular marker for growth and development in sheep,providing a reference for the application of FUT8 gene in molecular breeding of sheep.

Key words: sheep; FUT8 gene; polymorphisms; growth traits

中图分类号:

S813.3

冯勉, 尚明玉, 毕亚珍, 胡文萍, 张莉. 绵羊FUT8基因多态性及其与生长性状的关联分析[J]. 中国畜牧兽医, 2022, 49(10): 3838-3845.

FENG Mian, SHANG Mingyu, BI Yazhen, HU Wenping, ZHANG Li. Polymorphisms of FUT8 Gene and Its Association Analysis with Growth Traits in Sheep[J]. China Animal Husbandry and Veterinary Medicine, 2022, 49(10): 3838-3845.

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