Genetic variation and relationships in the mitochondrial DNA D-loop region of Qinghai indigenous and commercial pig breeds

Table 2 Parameters for determination of genetic diversity of pig populations

Code	Breed/Population	Size	S	H	Hd ± SD	Pi	K
CHN-QH	Bamei	115	10	10	0.491 ± 0.055	0.00264	1.15
DUR	Duroc	101	18	11	0.732 ± 0.033	0.00947	4.12
LAN	Landrace	108	18	18	0.853 ± 0.02	0.01567	6.815
YOR	Yorkshire	165	27	24	0.856 ± 0.018	0.01559	6.768

S: Number of polymorphic (segregating) sites
H: Number of haplotype
Pi: Nucleotide diversity, Nei 1987, eqs. 10.5 or 10.6 (Masatoshi Nei)
K: Average number of nucleotide differences; Tajima 1983, eq. A3 (Tajima)
Hd ± SD: Haplotype (gene) diversity and sampling variance, Nei 1987, eqs. 8.4 and 8.12 but replacing 2n with n. The standard deviation (or standard error) is the square root of the variance (Masatoshi Nei) [13]

ISSN: 1689-1392