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Table 1 Distribution of characteristics (numbers) of Shetland pony mares and Icelandic horses for cases and controls

From: Genome-wide association study of insect bite hypersensitivity in two horse populations in the Netherlands

 

Shetland pony mares

Icelandic horses

Trait

Cases

Controls

Total

Cases

Controls

Total

Number of animals

103

97

200

73

73

146

Year of scoring

      

2009

83

78

161

-

-

-

2010

20

19

39

73

73

146

Month of scoring

      

September

52

52

104

22

29

51

October

47

42

89

51

44

95

November

4

3

7

-

-

-

Veterinarian

      

1

97

93

190

73

73

146

2

6

4

10

-

-

-

Pedigree

      

Number of sires

84

86

129

57

61

95

Number of dams

100

93

187

68

67

126

Age, years

      

Mean (SD)

7.1 (4.5)

8.3 (4.4)

7.7 (4.5)

13.1 (6.0)

12.6 (5.9)

12.8 (5.9)

Range

0 – 23

4 – 22

0 – 23

4 – 29

4 – 35

4 – 35

Sex

      

Female

103

97

200

51

43

94

Male

-

-

-

22

30

52

Withers height category

     

N/Aa

Mini

28

24

52

   

Small

17

18

35

   

Middle

32

27

59

   

Tall

26

28

54

   

Imported from Iceland

  

N/Aa

   

Yes

   

17

2

19

No

   

56

71

127

Coat colour

      

Bay

5

4

8

11

7

18

Black

51

52

103

16

11

27

Black paint

6

4

10

2

3

5

Chestnut

26

23

49

8

14

22

Chestnut paint

8

6

14

-

2

2

Other

7

8

15

28

35

63

Silver dapple

-

-

-

8

1

9

  1. aN/A = not applicable.
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Genetics Selection Evolution

ISSN: 1297-9686