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Table 1 Study Farm Details

From: Comparison of bulk milk antibody and youngstock serology screens for determining herd status for Bovine Viral Diarrhoea Virus

Farm ID

Dairy/Beef

Vaccinating over study period?

Suspicion of active infection following initial screen?^

Was whole herd testing performed?

PIs present at WHT

Total number of PIs identified

Time between initial herd screen and WHT (Months)

Age range of random sample (Months)

Herd size at recruitment

1

Dairy

Y*

Y

Y

2

3

11

9–12

349

2

Dairy

N

Y

Y

0

12

7

9–12

542

3

Dairy

Y*

N

Y

0

0

10

9–12

450

5

Dairy

Y*

Y

Y

2

2

7

9–12

527

6

Beef

Y*

N

N

-

0

-

-

61

7

Dairy

Y*

Y

Y

0

0

9

9–12

381

8

Dairy

Y*

Y

Y

0

0

3

11.5–13

381

11

Dairy

Y*

N

N

-

0

-

-

217

13

Dairy

N

N

N

-

0

-

-

201

15

Dairy

Y*

N

Y

1

1

9

7.7–12

633

17

Beef

Y*

N

N

-

0

-

-

180

18

Dairy

Y*

Y

Y

4

6

9

10–12.6

307

19

Dairy

N

Y

Y

1

1

5

9–12

214

20

Dairy

Y*

Y

Y

3

3

4

9–12

309

21

Beef

N

N

N

-

0

-

-

54

24

Dairy

N

N

N

-

0

-

-

286

25

Dairy

Y*

N

Y

0

0

9

9.3–13.5

300

26

Dairy

Y*

Y

Y

2

3

5

8.5–12.3

170

27

Dairy

Y*

N

Y

1

1

11

9–12

192

28

Dairy

Y+

Y

Y

0

0

12

9–12

335

29

Dairy

Y+

Y

Y

0

0

12

8–11

412

30

Dairy

Y+

N

N

-

0

-

-

360

37

Dairy

Y+

Y

Y

3

5

2

10.1–12.3

402

38

Dairy

Y+

Y

Y

2

2

3

8.3–10.9

542

39

Dairy

N

N

Y

0

0

19

9–12

143

40

Dairy

Y*

Y

Y

5

9

1

9–12

230

    

Mean

  

8

 

315

    

Max

  

19

 

633

    

Min

  

1

 

54

  1. Details of the farms analysed in this manuscript: Farm type, vaccination status (* vaccinating using Pregsure BVD and + vaccinating using Bovilis BVD), Suspicion of active infection upon initial screening (^ according to the cautious initial interpretation), Total number of PIs identified during the study, Whether a whole herd test was performed, Total number of PIs identified at the WHT (where performed), The delay between initial screening and WHT if conducted, Age range of animals selected for the random screening at the WHT and herd size at recruitment. Farm numbers can be cross referenced with Booth and Brownlie 2012 [32] and Booth et al. 2013 [33]