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Table 5 Means of wean to first service interval over time, following 65 herd vaccinations, compared to baseline

From: Assessment of immediate production impact following attenuated PRRS type 2 virus vaccination in swine breeding herds

Weeks post PRRSv MLV vaccination

Wean-to-first-service interval means

Standard Error of the mean

P-value*

Baseline

5.82

0.3121

1

5.87

0.7289

0.4727

2

5.88

0.7305

0.4665

3

5.86

0.7272

0.4796

4

5.81

0.7217

0.5021

5

5.83

0.7357

0.4915

6

5.72

0.7213

0.5490

  1. * = mixed regression model of each group compared to baseline