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Table 4 Results of a bi-dimensional genome scan for number of piglets born alive (NBA)

From: A bi-dimensional genome scan for prolificacy traits in pigs shows the existence of multiple epistatic QTL

SSC 1

Position 1 cM (CI)

SSC 2

Position 2 cM (CI)

LR

(P-value)

a 1 (SE)

d 1 (SE)

a 2 (SE)

d 2 (SE)

a × a (SE)

a × d (SE)

d × a (SE)

d × d (SE)

1

153 (146-153)

6

55 (50-60)

27.34

<0.05

       

3.34 (0.72)

1

76 (69-84)

7

107 (101-116)

31.43

<0.01

-0.53 (0.18)

 

0.73 (0.31)

0.85 (0.38)

  

2.61 (0.57)

3.83 (0.97)

5

66 (59-73)

18

11 (2-20)

27.97

<0.05

  

0.71 (0.24)

 

-1.49 (0.40)

 

1.75 (0.47)

 

6

59 (54-64)

7

28 (12-37)

31.25

<0.01

      

2.88 (0.69)

6.20 (1.51)

6

4 (1-10)

14

29 (25-36)

30.27

<0.01

  

0.61 (0.25)

   

1.63 (0.42)

2.89 (0.74)

8

92 (88-94)

10

87 (81-103)

28.59

<0.05

   

-0.82 (0.32)

  

-1.50 (0.44)

-2.86 (0.75)

9

4 (1-7)

13

73 (66-82)

30.58

<0.01

  

-0.75 (0.22)

 

0.87 (0.35)

  

-3.31 (0.65)

10

99 (89-104)

15

3 (1-8)

29.41

<0.05

    

1.25 (0.34)

-1.25 (0.36)

 

-1.30 (0.62)

12

11 (9-18)

12

89 (74-96)

28.82

<0.05

0.34 (0.17)

 

0.90 (0.22)

 

-1.36 (0.30)

0.83 (0.39)

 

2.45 (0.60)

  1. SSC1 and Position1: Chromosome and position, in centimorgans (cM), of the first location. SSC2 and Position 2: Chromosome and position, in centimorgans (cM), of the second location. CI: Confidence interval. LR, Likelihood ratio of contrast of the model with and without epistasis. a1 additive effect of the first location. a2 additive effect of the second location d1 dominance effect of the first location. d2 dominance effect of the second location. Epistasis type: a × a: additive by additive effect; a × d: additive by dominance effect; d × a: dominance by additive effect: d × d, dominance by dominance effect. SE: standard error. Only significant values of a, d, and their interactions are shown.