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Table 6 PRRSv PCR log 10 virus copies in serum and bronchoalveolar lavage (BAL) in the dual challenge study in piglets. All piglets were challenged with M. hyopneumoniae on days 0, 1 and 3 and with PRRSV on day 14. Pigs in treated-challenged group were medicated daily with tylvalosin at 20 mg/kg body weight from day 10 to day 20. Treatement description is in Table 5

From: Effects of a water-soluble formulation of tylvalosin on disease caused by porcine reproductive and respiratory syndrome virus alone in sows or in combination with Mycoplasma hyopneumoniae in piglets

Group

Unit

PRRSv PCR in serum on different days (log 10 virus copies/ml)

PRRSv PCR in BAL from lungs

(virus copies)

Day 14

Day 17

Day 21

Day 24

Treated- challenged

Mean

0

8.73

8.59

7.49

6.95

SD

0

0.21

0.20

0.87

0.62

N

8

8

8

7

7

Untreated-challenged

Mean

0

8.50

8.04

6.89

6.36

SD

0

0.16

0.66

0.57

1.06

N

8

7

7

7

7

 

P-value

1.000

0.056

0.017

0.154

0.295