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Table 1 Description of farms A-K from which samples were obtained for the study

From: Detection and identification by PCR of Clostridium chauvoei in clinical isolates, bovine faeces and substrates from biogas plant

Farm

A

B

C

D

E

F

G

H

I

J

K

No. cows

130

72

50

24

120

40

70

50

130

120

nk

No. heifers

150

140

80

30

130

80

100

45

260

nk

nk

Cases of blackleg

14

nk

1

2

5–6

5–6

10

10

6–8

1–2

3

Year of occurrence

2002

2002

2001

2001

2003

2001

2000

2001

2002

2004

2003

2004

2005

2006

2006

Affected animals

heifers

calves, heifers

heifers

heifers

heifers

1 cow

4–5 heifers

heifers

calves

heifers

heifers

nk

Vaccination performed

yes

yes

yes

yes

yes

yes

yes

no

no

no

no

No. of faeces samples

10

10

10

10

10

7

10

10

10

20

7

No. of soil samples

3*

3*

3

9

5

8

10

6

11

11

4

No. of silage samples

-

-

-

-

-

-

-

-

-

-

4

  1. nk = Not known
  2. * For farms A and B, 11 soil samples were taken from a common pasture by the seashore plus three soil samples were taken around each cattle house.