COMPARATIVE EFFICACY OF STELLAMUNE~(TM) MYCOPLASMA AND HYORESP~(TM) IN PIGS AGAINST AN EXPERIMENTAL CHALLENGE WITH MYCOPLASMA HYOPNEUMONIAE

摘要

Enzootic pneumonia is a swine contagious pulmonary disease caused by Mycoplasma hyopneumoniae (Mh) as the primary agent. Stellamune~(TM) Mycoplasma (RespiSure~(R) outside of Europe) has been available in Europe since 1992. Numerous laboratory and field studies (1, 2, 3) have confirmed the effectiveness of vaccination in young piglets (1 week of age and at weaning) against lung lesions. Hyoresp~(TM) (Merial) became available in Europe in 1998. The manufacturer has proposed 2 vaccination schemes, either 2 injections of vaccine 3 weeks apart, (1-2 and 4-5 weeks of age) or 1 injection (10-11 weeks of age). Two studies were conducted at University of Ghent to compare Stellamune Mycoplasma with the 2 dose and the 1 dose Hyoresp vaccination scheme Vs non-vaccinated Controls by lung lesion scoring to measure efficacy against a M. hyopneumoniae challenge in commercial pigs.