Table 1.

Distribution of SNPs by chromosome

Chr	Length (Mb)	Number of SNPs reference	Number of SNPs target	%SNPs to be imputed
1	158.44	1,965,500	36,424	98.15
2	136.15	1,594,559	30,832	98.07
3	121.00	1,396,284	28,583	97.95
4	119.86	1,514,666	26,434	98.25
5	120.05	1,350,367	25,150	98.14
6	117.80	1,461,356	28,480	98.05
7	110.64	1,297,470	25,926	98.00
8	113.24	1,309,174	26,848	97.95
9	104.64	1,281,310	25,088	98.04
10	103.26	1,219,761	22,454	98.16
11	106.98	1,246,742	24,204	98.06
12	87.20	1,121,539	19,004	98.31
13	83.45	947,897	17,794	98.12
14	82.37	991,359	20,322	97.95
15	84.96	1,120,179	18,849	98.32
16	80.98	974,221	18,626	98.09
17	73.15	928,571	17,803	98.08
18	65.81	753,566	14,541	98.07
19	63.42	713,820	13,370	98.13
20	71.96	910,476	16,074	98.23
21	69.84	857,266	16,234	98.11
22	60.76	729,871	13,479	98.15
23	52.50	774,175	12,292	98.41
24	62.30	790,397	14,192	98.20
25	42.34	521,876	9,425	98.19
26	51.98	655,622	11,869	98.19
27	45.61	642,015	10,030	98.44
28	45.91	636,577	9,991	98.43
29	51.09	687,868	10,717	98.44
Overall	2487.69	30,394,484	565,035	98.14

Number of SNPs reference: the overall and per chromosome number of SNPs present in the reference animals; Number of SNPs target: the overall and per chromosome number of SNPs present in the validation (target) animals