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Table 3 Results of pooled faecal samples (1 pooled sample = 3 individual faecal samples) testing for B. hyodysenteriae and other Brachyspira spp. after implementation of the eradication programme (n = 10 farms). Farms with successful eradication are marked in bold

From: Implementation and evaluation of different eradication strategies for Brachyspira hyodysenteriae

 

Farm number

1

2

3

4

5

6

7

8

9

10

Type of farma

gilt rearing

farrow-to-finish

sow

fattening

farrow-to-finish

fattening

sow

sow

fattening

fattening

Depopulation

partial

total

none

total

none

partial

partial

partial

partial

partial

Medication

no

no

yes

no

yes (only sows)

no

yes

yes

no

no

B. hyodysenteriae

 Month 6

0/3

0/3 (sows)

0/4 (FP)c

0/3 (sows)

3/3 (FP)

0/4

0/3 (sows)

1/4 (FP)

3/4

0/3

0/3

  

 Month 9

 

0/3

0/4

 

0/4

1/1 (FP)

0/10b

2/4 (gilts)

0/3 (sows)

0/3

  

 Month 12

0/3

0/3

0/4

 

0/4

  

2/5 (gilts)

0/48 (sows)b

0/2

1/1

1/1

Other Brachyspira spp.

 Month 6

2/3 (murdochii)

2/3

0/3

0/3

0/4

0/9

0/12

0/4

0/3

0/3

  

 Month 9

 

0/3

1/4 (innocens)

 

0/4

0/3

1/10b (murdochii)

0/5 (gilts)

0/5 (sows)

0/3

  

 Month 12

2/3 (pilosicoli)

0/3

0/4

 

0/4

  

0/3

0/2

0/1

0/1

Clinical signs (diarrhoea) after eradication

no

no

yes

no

yes

yes

yes (mild, only in gilts)

no

yes

yes

  1. a Gilt rearing: from 10 weeks until pregnancy testing; sow farm: pigs raised until 10 weeks of age
  2. b Extra samples taken from clinically healthy pigs on known infected farms
  3. c FP fattening pigs