Antibody response to Mycoplasma bovis of calves introduced to a farm contaminated with the organism.
Antibody against Mycoplasma bovis in sera of 48 calves introduced to a farm, in which calf pneumonia associated with M. bovis had been occurring in the last 3 years, was detected by an indirect hemagglutination test. Significant rises of antibody titers in sera of calves belonging to the groups A (16 calves) and B (14 calves) were recorded by day 60 post-introduction. On the other hand, a significant increase of antibody titers of 18 calves in group C, which had been administered antibiotics as a preventive therapy, was demonstrated at day 248 after arrival. These results indicated that the spread of M. bovis infection occurred easily on the contaminated farm, and a preventive therapy could delay the outbreak of calf pneumonia associated with M. bovis.
Division of Veterinary Science, Faculty of Agriculture, Miyazaki University, Japan.
H
H
Nagatomo
T
T
Shimizu
Y
Y
Higashiyama
Y
Y
Yano
H
H
Kuroki
K
K
Hamana
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood / Q000378:metabolism*; D002417:Cattle / Q000097:blood / Q000378:metabolism*; D002418:Cattle Diseases / Q000453:epidemiology / Q000276:immunology* / Q000517:prevention & control; D006386:Hemagglutination Tests; D007564:Japan / Q000453:epidemiology; D009174:Mycoplasma / Q000276:immunology*; D011019:Pneumonia, Mycoplasma / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary*
D000907:Antibodies, Bacterial