Consistency of linkage disequilibrium between Chinese and Nordic Holsteins and genomic prediction for Chinese Holsteins using a joint reference population

Table 2 Distance and linkage disequilibrium ( $r_{LD}^{2}$ ) of adjacent SNP for each Bos taurus autosome (BTA)

BTA	Length (Mb)	Number of SNP	Mean distance (Kb)	Mean $r_{LD}^{2}$		Consistency¹
BTA	Length (Mb)	Number of SNP	Mean distance (Kb)	Chinese Holstein	Nordic Holstein
1	160.89	2729	58.98	0.22	0.23	0.97
2	138.92	2221	62.58	0.22	0.22	0.98
3	125.41	2067	60.70	0.21	0.22	0.97
4	120.39	2031	59.30	0.20	0.21	0.97
5	124.59	1740	71.64	0.21	0.21	0.97
6	119.01	2099	56.73	0.22	0.23	0.97
7	112.37	1809	62.15	0.22	0.24	0.98
8	115.59	1940	59.61	0.21	0.22	0.98
9	104.64	1639	63.88	0.20	0.21	0.97
10	103.09	1752	58.87	0.22	0.22	0.97
11	106.97	1858	57.61	0.21	0.21	0.97
12	89.17	1338	66.70	0.19	0.20	0.97
13	83.84	1434	58.50	0.22	0.22	0.97
14	83.15	1409	59.06	0.24	0.25	0.98
15	83.81	1371	61.17	0.18	0.19	0.96
16	80.09	1283	62.47	0.22	0.23	0.98
17	74.89	1324	56.60	0.19	0.20	0.97
18	65.16	1101	59.24	0.19	0.19	0.96
19	62.83	1131	55.60	0.18	0.20	0.97
20	72.00	1314	54.84	0.20	0.21	0.97
21	68.46	1110	61.73	0.21	0.22	0.97
22	60.14	1047	57.50	0.19	0.19	0.97
23	51.73	895	57.86	0.17	0.18	0.97
24	62.77	1053	59.67	0.21	0.21	0.98
25	43.23	825	52.46	0.19	0.20	0.96
26	50.95	871	58.57	0.19	0.20	0.97
27	45.33	801	56.67	0.16	0.16	0.96
28	46.06	783	58.90	0.16	0.17	0.95
29	50.53	863	58.62	0.17	0.18	0.97
Mean	2506.00²	41 838²	59.59	0.20	0.21	0.97

¹The correlation of r_LD of adjacent SNP pairs between two populations; ²Sum over 29 autosomes.

ISSN: 1297-9686