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Table 1 Population structure of trials 1 through 8

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

    

WUR

Number offspring per family

Total number of offspring

Trial

 

Breed1

N

frequency4

Min

Mean

Max

Barrows

Gilts

Total

Dead5

1-32,3

Sires

LR

33

0.22

1

17.1

114

565

0

565

48

Dams

LW

204

0.08

1

2.8

6

4

Sires

Duroc

6

0.08

8

32.5

50

109

86

195

2

Dams

LW/LR/Y

33

0.10

1

5.9

13

5

Sires

Duroc

10

0.12

2

19.9

42

109

90

199

14

Dams

LR/Y

38

0.22

2

5.2

10

6

Sires

LR

31

0.02

1

6.2

24

198

0

198

87

Dams

LR

72

0.03

1

2.8

5

7

Sires

Pietrain

6

0.42

20

32.8

40

109

88

197

3

Dams

LW/LR/Y

28

0.20

1

7

13

8

Sires

Duroc

14

0.11

2

12.4

34

97

101

198

16

Dams

Y/LR

34

0.07

1

4.5

17

  1. 1LR Landrace, LW Large White, Y Yorkshire; 2trials 1 through 3 consisted of the same cross from one breeding company; 3trials 1 and 2 were Landrace by Large White crosses; for trial 3, 121 piglets were from Landrace sires by Large White dams crosses and 63 piglets were from the reciprocal cross of Large White sires by Landrace dams; 4frequency of the favorable allele (B) at SNP WUR10000125 on SSC4; for trials 1–3, dam genotypes were not provided, so frequencies were determined using ordered genotypes of the offspring; 5dead prior to 42 days after infection.
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Genetics Selection Evolution

ISSN: 1297-9686