杜洛克专门化品系S22的选育

Breeding of Duroc specialized line S22

摘要: 以2006年从加拿大DGI公司引进的杜洛克原种公猪35头18个血统、母猪281头，在水台原种场分场沙湖原种场建立基础育种群，采用开放式继代选育方法，期间适当引入外血，并对生长发育性状进行测定，利用BLUP法结合分子标记选择及基因组选择等技术，经过8年选育，将该品系培育为体型高长、生长速度快、饲料报酬高、无应激敏感基因、适合作为大体重上市的父系种猪。

Abstract: The nucleus base was composed of 281 sows and 35 heritage boars imported from DGI Company of Canada in 2006. The open systematic breeding method was used with proper introduction of superior boar semen. Growth and development performances were tested during the improvement period. The Best Linear Unbiased Prediction (BLUP) method, Molecule Maker Selection and Genomic Selection were integrated and implemented. The specialized line S22 was obtained after eight years of breeding. This line S22 possessed the characters of high and long body, fast growth, high feed converse efficiency and no stressed halothane gene. This line was a suitable sire line for producing high weight slaughter pigs.