Association analysis between five microsatellite loci and litter size in small tail han sheep
文献类型: 外文期刊
第一作者: Chu, MX
作者: Chu, MX;Wang, JZ;Wang, AG;Li, N;Fu, JL
作者机构:
关键词: sheep;litter size;microsatellite;polymorphism;least squares analysis
期刊名称:ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES ( 影响因子:2.509; 五年影响因子:2.604 )
ISSN: 1011-2367
年卷期: 2003 年 16 卷 11 期
页码:
收录情况: SCI
摘要: The objective of the present study was to explore associations between five microsatellites linked to Fec(B) and FecX(1) genes and litter size in Small Tail Han sheep. The polymorphisms of five microsatellite loci, OarAE101, BM1329, BMS2508, TGLA54 and TGLA68 were detected in 244 ewes of Small Tail Han sheep. Analysis of association between three microsatellite loci (BMS2508, BM1329 and OarAE101) located in the 10 cM region covering the Fec(B) gene (Booroola gene) and litter size in Small Tail Han sheep indicated that BMS2508 had significant effect on litter size in the second parity (p<0.05), but no significant effect on litter size in the first parity (p>0.05), while the other two microsatellite loci had no significant effect on litter size in both the first and the second parity in Small Tail Han sheep (p>0.05). At microsatellite locus BMS2508, least squares means in the second parity of genotypes 101/111 and 99/109 were significantly higher than those of genotypes 99/99, 99/101, 99/111 and 99/115 (p<0.05); least squares mean in the second parity of genotype 101/111 was significantly higher than that of genotypes 109/111 and 111/111 (p<0.05). Results of this study also indicated that two microsatellite loci (TGLA54 and TGLA68) that confined the 28.7 cM region covering the FecX(I) gene (Inverdale gene) did not affect litter size in both the first and the second parity in Small Tail Han sheep significantly (p>0.05). The information found in the present study is very important for improving the reproductive performance in sheep breeds by marker assisted selection.
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