Abstract
On a hog farm of breeding and raising in the Iburi district of Hokkaido, Bordetella bronchiseptica (BP) was isolated from the nasal cavity of breeding sows on the day of parturition and for the subsequent 15 days. Then intranasal spraying with kanamycin sulfate (960 mg titer per capita) was performed in 6 breeding sows 3 days before the expected day of parturition, on the actual day of parturition, and 1, 2, and 3 weeks after parturition. In addition, animal barns were disinfected with chloride of potassium isocyanurate twice a week.
As a result, no BP was detected from the nasal cavity of 30 young born from these sows at the time of weaning. Turbinal atrophy was reduced to a larger extent in the treated group than in the untreated control one.
