草食家畜Issue(3)：8-14,7.DOI:10.16863/j.cnki.1003-6377.2026.03.002
阿克苏地区绵羊不同群体中FecB基因多态分布与产羔性能关联分析
Distribution of FecB Gene Polymorphism and Its Association with Lambing Performance in Different Sheep Populations of Aksu Prefecture
摘要
Abstract
[Objective]This study was conducted to investigate the distribution of the FecB gene,which affects sheep reproductive performance,in Duolang sheep,Hu sheep and Duolang-Hu crossbred sheep in Aksu Prefecture,Xinjiang,and to evaluate its association with lambing performance.[Methods]In the main sheep breeding areas in Aksu,blood samples were collected from Hu sheep(H),Duolang-Hu crossbred sheep(HD)and Duolang sheep,which were subdivided into three groups:the twin-lambing group with at least two consecutive twin births(LD),the non-twin-lambing group(CD),and the random sampling group(SD).Meanwhile,lambing performance was recorded.The FecB genotypes were determined by PCR-RFLP,and data were statistically analyzed.[Results]The B allele frequency in the LD group(7.19%)was significantly higher than that in the CD group(2.94%),and lambing performance was significantly correlated with B allele frequency(P<0.05).The B allele frequency was the highest in the H group(81.05%),followed by the HD group(26.17%),the LD group(7.19%),and lowest in the SD group(5.24%)and CD group(2.94%).The difference in B allele frequency between the H group and the other groups was extremely significant(P<0.01).Meanwhile,the B allele frequency was positively correlated with lambing rate in the corresponding group.The B allele frequency of randomly sampled Duolang sheep populations from different regions ranged from 3.75%to 5.92%,and the frequency in the LD group(7.19%)was much lower than that in Hu sheep(81.05%),while the frequency in the HD group remained stable between 25.00%and 29.69%over three consecutive years(2023-2025).[Conclusion]The FecB gene contributed to the improvement of reproductive performance in Duolang sheep,although it was not the only major gene controlling high prolificacy.The results also indicated that Hu sheep was an excellent donor of high-fecundity genes,and the B allele frequency can be effectively increased by crossbreeding with Hu sheep.关键词
多浪羊/湖羊/FecB基因/产羔性能/分子标记辅助选择/杂交改良Key words
Duolang sheep/Hu sheep/FecB gene/lambing performance/marker-assisted selection/crossbreeding improvement分类
农业科技引用本文复制引用
唐淑红,阿衣努然·阿不地日木,郑银伟,买尔旦·艾斯卡尔,秦崇凯,江婉琳,郭曲霖,王俊花,梁小鹏,展宝宏,布海里且木·吐尼亚孜..阿克苏地区绵羊不同群体中FecB基因多态分布与产羔性能关联分析[J].草食家畜,2026,(3):8-14,7.基金项目
阿克苏地区科技兴阿项目(2022KJXA01) （2022KJXA01）
新疆维吾尔自治区现代畜禽种业提升计划资助项目 （）
