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Table 2 Prevalence of seropositive lambs, weaning weight, altitude of pastures, and lamb loss per farm and year.

From: Prevalence of Anaplasma phagocytophilum infection and effect on lamb growth

Farm

Number of samples 2007(2008) n

Prevalence of seropositive lambs %

Minimum altitude of pastures masl

Average weaning weight kg

Lamb loss %

 

2007

2008

2007

2008

 

2007

2008

2007

2008

A

30

 

73

 

0

47.9

 

5

 

B2

122

79

67

14

200

44.3

48.7

8

6

C

86

 

78

 

0

48.6

 

0

 

D

44

 

2

 

100

48.0

 

36 3

 

E

72

 

0

 

100

47.6

 

4

 

F1 2

49

 

96

 

0

46.9

 

17

 

G

173

71

58

65

0

44.8

48.2

11 3

25 3

H

88

90

90

81

0

43.0

46.1

17

11

I1 2

123

 

10

 

600

41.5

 

9

 

J

58

 

55

 

50

50.5

 

1

 

K

101

 

84

 

175

46.8

 

12

 

L

22

 

36

 

150

50.0

 

7

 

All

968

240

55

54

 

45.7

47.6

  
  1. 1 The farmer perceived that there were no ticks on their pastures
  2. 2 No prophylactic treatment against ticks
  3. 3 There were documented loss to wolverine (Gulo gulo) on these farms