| 黄淮杜泊羊繁殖性能和FecB基因多态性研究 |
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| 作者单位： | ;1.河南牧业经济学院动物科技学院;2.内蒙古自治区农牧业科学院;3.安徽农业大学动物科技学院;4.河南省舞阳县畜牧局 |
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| 摘 要： | 为系统评价黄淮杜泊羊的繁殖性能,本实验对2家黄淮杜泊羊核心育种场1年的繁殖数据进行了统计和分析,并随机采集了145只核心群羊只进行FecB基因多态性分析。结果表明:黄淮杜泊羊性成熟为6～7月龄,年繁殖率为252.82%,羔羊断奶成活率为95.79%,每只母羊年提供断奶羔羊数2.39个;黄淮杜泊羊群体FecB基因存在BB、B+和++3种基因型,其中B+型(杂合型)是群体中的优势基因型,基因型频率为0.606 9;基因型与产羔数关联分析表明,BB和B+基因型产羔数极显著高于++基因型。综上,黄淮杜泊羊具有多胎高繁的特性,在繁殖性能方面符合专门化肉用高繁绵羊品种的标准。
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| 关 键 词： | 黄淮杜泊羊 繁殖性能 FecB基因 |
Reproductive Performance and FecB Gene Polymorphism in Huanghuai Dorper Sheep |
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| Affiliation: | ,College of Animal Science and Technology, Henan University of Animal Husbandry and Economics,Inner Mongolia Academy of Agricultural & Animal Husbandry Sciences,College of Animal Science and Technology, Anhui Agricultural University,Henan Wuyang County Animal Husbandry Bureau,Xunxian Xinlin Animal Husbandry Co.Ltd. |
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| Abstract: | To evaluate the reproductive performance of Huanghuai Dorper sheep, the experiment analyzed the reproductive data of Huanghuai Dorper sheep in two core breeding farms for one year, and randomly collected 145 sheep for FecB gene polymorphism analysis. The results showed that the sexual maturity of Huanghuai Dorper sheep was 6～7 months old, the annual reproduction rate was 252.82%, the survival rate of weaning lambs was 95.79%, and the number of weaned lambs per ewe was 2.39. There were three genotypes of FecB gene: BB, B+ and ++ in Huanghuai Dorper sheep. Among them, B+(heterozygous) was the dominant genotype in the population with genotype frequency of 0.606 9. The correlation analysis between genotype and lambing number showed that the lambing number of BB genotype and B+ genotype was significantly higher than that of ++ genotype. In summary, Huanghuai Dorper sheep had the characteristics of multiple foetuses and high reproduction, which meets the standard of specialized high-breed sheep for meat. |
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| Keywords: | Huanghuai dorper sheep Reproductive performance FecB gene |
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