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| 浦东白猪遗传多样性及繁殖性能的变化分析 | |
| 引用本文： | 肖倩,张哲,孙浩,张向喆,沈大德,储野根,王起山,潘玉春.浦东白猪遗传多样性及繁殖性能的变化分析[J].中国畜牧兽医,2017,44(4):1095-1101. |
| 作者姓名： | 肖倩 张哲 孙浩 张向喆 沈大德 储野根 王起山 潘玉春 |
| 作者单位： | 1. 上海交通大学农业与生物学院, 上海 200240; 2. 上海市兽医生物技术重点实验室, 上海 200240; 3. 上海市南汇区种畜场, 上海 201318 |
| 基金项目： | 上海市科技兴农重点攻关课题（沪农科推字（2016）第1-4号、沪农科产字（2014-2016）第6号）；十二五农村领域国家科技计划课题:优异地方猪种资源收集和品种保护策略集成（2015BAD03B01-02） |
| 摘 要： | 试验旨在研究浦东白猪现存群体的遗传多样性及其繁殖性能变化的原因。利用全基因组范围内的遗传标记（SNPs），对比6个太湖流域地方品种及3个西方引进品种，对浦东白猪的遗传多样性进行了分析。同时利用落入繁殖候选基因内的SNPs，分析了群体的多样性及结构。结果显示，相较于本研究中所选择的太湖流域地方品种及西方引进品种，浦东白猪的遗传多样性较太湖流域地方品种低；除枫泾猪外，浦东白猪繁殖相关SNPs的多态性标记的比例、期望杂合度最低，等位基因丰度仅高于杜洛克猪；主成分分析（PCA）结果揭示浦东白猪繁殖相关SNPs位点仍具有其群体独特性。研究结果揭示了浦东白猪现存群体遗传多样性较低，繁殖性能的退化可能是由于一些有利等位基因的灭绝、繁殖相关基因多态性及个体杂合性的降低所致。但是浦东白猪仍然携带一定数量的有利等位基因且依旧具有其群体独特性，暗示浦东白猪仍具有较高的保种价值。本研究为浦东白猪后期的选育、保种和开发利用提供了一定的参考。 |
| 关 键 词： | 浦东白猪 遗传多样性 繁殖性能 |
| 收稿时间： | 2016-11-09 |
Genetic Diversity and Degradation Analysis of Reproductive Performance of Pudong White Pig |
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| XIAO Qian,ZHANG Zhe,SUN Hao,ZHANG Xiang-zhe,SHEN Da-de,CHU Ye-gen,WANG Qi-shan,PAN Yu-chun.Genetic Diversity and Degradation Analysis of Reproductive Performance of Pudong White Pig[J].China Animal Husbandry & Veterinary Medicine,2017,44(4):1095-1101. | |
| Authors: | XIAO Qian ZHANG Zhe SUN Hao ZHANG Xiang-zhe SHEN Da-de CHU Ye-gen WANG Qi-shan PAN Yu-chun |
| Institution: | 1. School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai 200240, China; 2. Shanghai Key Laboratory of Veterinary Biotechnology, Shanghai 200240, China; 3. Shanghai Nanhui Pig Breeding Farm, Shanghai 201318, China |
| Abstract: | This study was aimed to investigate the genetic diversity and the reason for the degradation of the reproductive performance of Pudong White pig. The genetic diversity of Pudong White pig, six Taihu pig breeds and three Western pig breeds were analyzed based on the genome-wide SNPs.The genetic diversity and population structure of these pig breeds were also explored based on the SNPs related to reproductive traits. The results showed that Pudong White pig displayed a lower level of the genetic diversity than the Taihu area pig breeds. For the reproductive-related loci, except for Fengjing pig, Pudong White pig displayed the lowest propotion of polymorphic markers, expected heterozygosities and allelic richness (excluded Duroc pig). The result of PCA showed that Pudong White pig displayed its uniqueness in the reproductive-related SNPs. With the comparsion of Taihu pigs and Western populations, Pudong White pig displayed a lower level of the genetic diversity and more homozygous reproductive-related loci. Nevertheless, a certain number of favorable alleles were still harbored in Pudong White pig, which might result high heterosis in the offsprings. In conclusion, the results of this study might provide some valuable information for the breeding, conservation and utilization of this breed. |
| Keywords: | Pudong White pig genetic diversity reproductive performance |
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