According to the allele frequencies of 31 microsatellite sites, mean heterozygosity (H), polymorphism information content (PIC) and D(subscript A) genetic distances were calculated for each breed.

• 利用等位基因频率计算出各群体的平均遗传杂合度(H)、多态信息含量(PIC)匀和群体间的D(下标A)遗传距离。