Genome-wide association and genomic prediction for host response to porcine reproductive and respiratory syndrome virus infection

Table 6 Top ten 1 Mb windows that explained the greatest percentage of genetic variance for virus load and weight gain

Chromosome	Position³	Rank	Genetic variance (%)
Virus load ¹
4	139	1	13.2
X	113	2	1.24
1	292	3	0.70
9	13	4	0.64
X	112	5	0.49
9	47	6	0.48
9	29	7	0.46
4	99	8	0.43
7	13	9	0.40
16	74	10	0.39
Total genetic variance ⁴		22.2
Weight gain ²
4	139	1	9.14
5	72	2	2.61
7	27	3	1.45
10	67	4	0.94
4	7	5	0.84
11	1	6	0.71
3	138	7	0.56
6	18	8	0.52
1	123	9	0.48
17	22	10	0.43
Total genetic variance ⁴		6.50

¹VL virus load calculated as area under the curve of log-transformed viremia between 0 and 21 days post infection (dpi); ²WG weight gain from 0 dpi to 42 dpi; ³Megabase position within a Sus scrofa chromosome; ⁴posterior mean of the total genetic variance from the genome-wide association analyses.

ISSN: 1297-9686