[Field study with a vaccine against enzootic pneumonia of swine].
The EP vaccine Stellamune Myco was tested in 4 different trials. In a first trial, the daily weight increase and the incidence of lung lesions and their degree of severity were compared in non-vaccinated and vaccinated pigs originating from a herd infected with M. hyopneumoniae. The daily weight increases of the vaccinated animals were almost 60 g above that of the non-vaccinated and the number of altered lungs and the severity of the lung lesions was smaller in the vaccinated group. The effects were statistically different. In a second trial, no lesions were observed in 60% of the vaccinated animals. In the non-vaccinated group, the proportion was only about 35%. More severe lung lesions were only present in the non-vaccinated animals. In a third trial, it was observed that the animals originating from infected herds may excrete mycoplasmas despite the vaccination. In a fourth trial, it was determined that SPF piglets were not protected with the vaccination against an infection caused by M. hyopneumoniae.
Schatzmann
E
E
Schweinegesundheitsdienst Genossenschaft Zürich, Universität Zürich.
Keller
H
H
Grest
P
P
Lorenz
D
D
Burri
W
W
D000818:Animals; D001428:Bacterial Vaccines; D005260:Female; D008168:Lung / Q000473:pathology; D008297:Male; D009174:Mycoplasma / Q000276:immunology*; D011002:Pleuropneumonia, Contagious / Q000517:prevention & control*; D013047:Specific Pathogen-Free Organisms; D013552:Swine; D013553:Swine Diseases / Q000517:prevention & control*; D014611:Vaccination / Q000662:veterinary*; D015430:Weight Gain
D001428:Bacterial Vaccines