Impact of diversity of Mycoplasma hyopneumoniae strains on lung lesions in slaughter pigs

Table 3 Descriptive results in the three category groups: prevalence of nPCR positive results, average number of different strains, severity of Mycoplasma-like lesions ±SD, prevalence pneumonia, fissures and pleurisy expressed in percentages

	Category			Overall
	1	2	3	Overall
nPCR results	42.5	79.6	91.1	82.5
Average number of different strains	1	4	9	7
Severity of Mycoplasma-like lesions ± SD	0.78 ± 2.4	3.97 ± 10.7	5.54 ± 12.7	4.59 ± 11.7
Prevalence of pneumonia	11.8	23.2	29.7	25.9
Prevalence of fissures	29.2	41.4	42.3	41.3
Prevalence of pleurisy	10.2	21.2	29.1	24.6

Severity of Mycoplasma-like lesions: minimum 0% and maximum 100% of the lung surface affected with pneumonia.
1 = batches with only one strain detected, 2 = batches with 2–6 different strain and 3 = batches with ≥7 strains detected, SD: standard deviation, n: number, nPCR results: nested polymerase chain reaction: percentage of positive animals for M. hyopneumoniae-DNA detected in the bronchoalveolar lavage fluid.

ISSN: 1297-9716