摘要
为全面了解太湖鹅品种在江苏省保种效果动态变化过程,并与浙江省太湖鹅的保种情况进行比较,采用简化基因组测序方法对江苏太湖鹅群体(TS、TC、TK)以及浙江太湖鹅群体(TZ)的群体遗传参数进行系统比较分析。结果发现,与前2个世代相比,由于采用了严格的家系等量随机选配法以及适当进行种群间种用个体的相互引进,TC、TK群体近交系数分别下降到0.0875和0.0753;遗传结构分析和主成分分析均表明,TZ群体独立于其他3个群体之外,且出现明显分化,TZ群体与TS群体的遗传分化系数(F_(st))达到了0.0515,近交系数为0.1107,明显高于江苏省太湖鹅群体。TZ群体与TS群体的选择信号分析发现,脂肪酸代谢相关通路的基因受到了选择。以上结果表明,江苏省太湖鹅群体保种效果较好,家系等量随机选配法以及适当血缘交换可以避免近交系数上升。
In order to fully understand the dynamic change process of breed conservation effect of Taihu goose in Jiangsu Province and compare with that in Zhejiang Province,the genetic parameters of Taihu goose populations in Jiangsu(TS,TC,TK)and Zhejiang Province(TZ)were analyzed by simplified genome sequencing.The results showed that compared with the previous two generations,the inbreeding coefficients of TC and TK populations decreased to 0.0875 and 0.0753,respectively,due to the using of strict stemma equimultiple random select cross method and appropriate introduction of breeding-use individuals between different populations;the genetic structure analysis and principal component analysis showed that TZ population was independent of the other three populations,and differentiated significantly.The genetic differentiation coefficient(F_(st))of TZ and TS population reached 0.0515,and the inbreeding coefficient was 0.1107,which was significantly higher than that of populations in Jiangsu Province.The selection signature analysis of TZ and TS population showed that the genes for fatty acid metabolism related pathway were selected.The results showed that the effect of Taihu goose population conservation was better in Jiangsu Province,and the increase of inbreeding coefficient could be avoided by stemma equimultiple random select cross method and appropriate blood exchange.
作者
刘宏祥
王健
宋卫涛
朱春红
陶志云
徐文娟
章双杰
李慧芳
LIU Hongxiang;WANG Jian;SONG Weitao;ZHU Chunhong;TAO Zhiyun;XU Wenjuan;ZHANG Shuangjie;LI Huifang(Jiangsu Institute of Poultry Sciences,Yangzhou 225125,China;Jiangsu Agri-animal Husbandry Vocational College,Taizhou 225300,China)
出处
《河南农业科学》
北大核心
2021年第1期134-141,共8页
Journal of Henan Agricultural Sciences
基金
江苏省现代农业(水禽)产业技术体系项目(JATS[2020]361)
江苏省属公益类科研院所自主科研项目(BM2018026)。
关键词
鹅
太湖鹅
遗传评价
简化基因组
保种
选择信号
富集分析
Goose
Taihu goose
Genetic evaluation
Simplified genome
Breed conservation
Selection signature
Enrichment analysis
作者简介
刘宏祥(1985-),男,江苏扬州人,助理研究员,硕士,主要从事家禽遗传育种与资源保护研究。E-mail:lhxatyz@foxmail.com;通信作者:李慧芳(1974-),女,山西盂县人,研究员,博士,主要从事家禽遗传育种与资源保护研究。E-mail:lhfxf_002@aliyun.com。
