[Genetic diversity and origin of mitochondrial DNA D-loop region for some domestic goat breeds of China].
The complete sequences of mitochondrial DNA D-loop of 140 individuals in 10 Chinese goat (Capra hiruc) breeds were analyzed by DNA sequencing technology. The results showed that the length of mtDNA D-loop in Chinese goats was 1 211-1 213 bp. There were 84 different haplotypes and 171 polymorphic sites. The mean nucleotide diversity (Pi) and haplotype diversity (Hd) were 0.02063+/+0.00225 and 0.988+/-0.003, respectively, and the average number of nucleotide differences (k) was 24.896. The results showed an abundant genetic diversity in domestic goats of China. The NJ tree indicated that there were two main branches in Chinese domestic goats, thereinto, one branch was clustered with Capra aegagrus, and Capra falconeri was clustered alone, which indicated that Capra aegagrus had more contribution to Chinese domestic goat breeds.
Hao
Rong-Chao
RC
College of Animal Science and Technology, Northwest A&F University, Yangling 712100, China. haorongchao2423@sina.com
Zan
Lin-Sen
LS
Liu
Chou-Sheng
CS
Wang
Zhi-Gang
ZG
Zhang
Gui-Xiang
GX
Han
Xu
X
Hao
Huai-Zhi
HZ
Wang
Jing
J
DU
Xiao-Yong
XY
D000818:Animals; D000829:Animals, Domestic / Q000235:genetics; D002681:China; D004272:DNA, Mitochondrial / Q000032:analysis / Q000737:chemistry / Q000235:genetics*; D019143:Evolution, Molecular; D014644:Genetic Variation; D006041:Goats / Q000235:genetics*; D006239:Haplotypes; D008928:Mitochondria / Q000235:genetics*; D009690:Nucleic Acid Conformation; D017422:Sequence Analysis, DNA
D004272:DNA, Mitochondrial