Table 4.
Categorical variables of ‘infection data’ and their levels collected from 1,127 piglets
|
Variable |
Level |
All piglets |
Mhyo neg. |
Mhyo pos. |
|
|---|---|---|---|---|---|
| (n) | (%)1 | n (%)2 | n (%)2 | ||
| Vaccine against M. hyopneumoniae |
Suvaxyn® M. hyo |
386 |
34.3 |
361 (33.2) |
25 (61.0) |
| Ingelvac® M. hyo |
441 |
39.2 |
427 (39.3) |
14 (34.1)** |
|
| Porcilis® M hyo |
298 |
26.5 |
296 (27.3) |
2 (4.9)** |
|
| Vaccination against PCV2 |
No |
310 |
27.5 |
308 (28.4) |
2 (4.9) |
| Yes |
817 |
72.5 |
778 (71.6) |
39 (95.1)* |
|
| Diseases |
No |
701 |
62.2 |
674 (62.1) |
27 (65.9) |
| Local diseases |
15 |
1.3 |
15 (1.4) |
0 (0.0) |
|
| Systemic diseases |
146 |
13.0 |
143 (13.2) |
3 (7.3) |
|
| Respiratory diseases |
265 |
23.5 |
254 (23.4) |
11 (26.8) |
|
| Routine treatment in the 1st week of life† |
Amoxicillin |
386 |
34.3 |
361 (33.2) |
25 (61.0) |
| Toltrazuril & penicillin |
441 |
39.1 |
427 (39.3) |
14 (34.1)** |
|
| Long-lasting amoxicillin |
300 |
26.6 |
298 (27.4) |
2 (4.9)** |
|
| Routine treatment in the 2nd week of life† |
Long-lasting penicillin |
441 |
66.0 |
427 (60.7) |
14 (93.3) |
| Amoxicillin & tulathromycin |
277 |
34.0 |
276 (39.3) |
1 (6.7)** |
|
| Routine treatment in the 3rd week of life† |
Tulathromycin |
441 |
100.0 |
427 (100) |
14 (100) |
| Any treatment against M. hyopneumoniae |
No |
408 |
36.2 |
382 (35.2) |
26 (63.4) |
| Yes |
719 |
63.8 |
704 (64.8) |
15 (36.6)* |
|
| Level of antibodies against M. hyopneumoniae |
S/P ratio < 0,4 |
799 |
70.9 |
769 (70.8) |
30 (73.2) |
| S/P ratio ≥ 0,4 | 328 | 29.1 | 317 (29.2) | 19 (26.8) | |
Using PCR results from suckling pigs’ nasal swabs as a binomial outcome variable, the incidence rate ratio (IRR; recognizing the first level of each variable as baseline in a univariable Poisson regression analysis) were calculated. Significant differences are indicated with asterisks.
† if applied.
1 column-percent.
2 row–percent.
* P-value of IRR <0.05.
** P-value of IRR <0.01.