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. 2014 Jun 14;10:132. doi: 10.1186/1746-6148-10-132

Table 3.

Results of culture and PCR for Mycobacterium avium subsp. paratuberculosis in 17 infected herds

Herd Production type Herd size (all cattle > 2 years) Number of animals < 2 years Prevalence of PCR positive animals > 2 years (%) Prevalence of culture positive animals > 2 years (%) Prevalence of culture positive animals < 2 years (%)
Total (mean)
 Dairy
 60.2
 12.5
 0.7
 6.0
 3.2
Total (mean)
 Beef
 44.4
 11.7
 2.9
 6.4
 4.9
1
 Dairy
 82
 6
 0
 1.2
 0.0
2
 Dairy
 53
 0
 0
 1.9
 N/A1
3
 Dairy
 28
 5
 0
 3.6
 0.0
4
 Dairy
 66
 22
 0
 4.5
 9.1
5
 Dairy
 39
 10
 2.6
 5.1
 0.0
6
 Dairy
 57
 1
 0
 5.3
 N/A1
7
 Dairy
 48
 0
 0
 6.3
 N/A1
8
 Dairy
 55
 15
 1.8
 7.3
 0.0
9
 Dairy
 81
 29
 1.2
 7.4
 3.4
10
 Dairy
 93
 37
 1.1
 12.9
 2.7
11
 Beef
 54
 12
 1.9
 1.9
 0.0
12
 Beef
 41
 7
 0
 2.4
 0.0
13
 Beef
 56
 21
 0
 3.6
 4.8
14
 Beef
 28
 12
 3.6
 7.1
 8.3
15
 Beef
 77
 15
 2.6
 7.8
 0.0
16
 Beef
 31
 14
 0
 12.9
 14.3
17 Beef 24 1 12.5 16.7 N/A1

1 N/A = not applicable; no prevalence could be calculated for farms 2 and 7 with no animals < 2 years and for farms 6 and 17 with only one animal < 2 years at the time of the farm visit.