Thein vitroaction of disinfectants and the application of CTAB in the control ofStr. agalactiaemastitis

Abstract

1.In vitroexperiments carried out by a modified Rideal-Walker technique showed the superiority of CTAB over chlorine and chloroxylenol disinfectants againstStr. agalactiae.2. The disinfectant action of 1 % CTAB persisted on the surface of dry hands and cows' teats for a period of at least 3 hr. Subsequent moistening of the hands with milk reduced the efficiency of this disinfectant.3. For the prevention of dissemination ofStr. agalactiaeby means of milkers' hands and at the same time to reduce the incidence of infection on the surface of teats, a lanette wax-oil base containing 1 % CTAB was tested. It was found that the inclusion in the cream base of CTAB did not reduce its bactericidal efficiency.