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Table 1 Animal composition of the PHGC trials

From: Comparison of host genetic factors influencing pig response to infection with two North American isolates of porcine reproductive and respiratory syndrome virus

PRRS virus isolate

Trial #

Number of animals

Number of sires

Number of dams

Breed cross

Genetic backgrounda

NVSL-97-7895

1–3

507

32

203

LW × LR

A

 

4

191

6

33

Duroc × LW/LR

B

 

5

182

10

38

Duroc × LR/LW

C

 

6

109

26

53

LR × LR

D

 

7

186

6

27

Pietrain × LW/LR

E

 

8

158

15

43

Duroc × LW/LR

F

 

15

166

11

49

Pietrain × LW

G

KS-2006-72109

10

184

8

57

Pietrain × LW

G

 

11

177

37

89

LW × LR

A

 

12

146

14

49

LR × LW

H

 

13b

173

20

37

Duroc × LW/LR

F

 

14

165

8

24

Duroc × LR/LW

C

  1. LW large white, LR landrace
  2. aGenetic background is defined as pigs from the same breeding company and the same breed cross
  3. bTrial 13 was excluded from analyses due to unusual viremia profiles as seen in Additional file 1: Figure S1