[Field experience using an inactivated vaccine in Aujeszky's disease vaccination of cattle (author's transl)].

In the autumn of 1979, approximately, 400 animals on twenty farms were inoculated twice against Aujeszky's disease using an inactivated vaccine in a practice in the Achterhoek (province of Gelderland). The animals vaccinated were mainly yearlings and heifers on farms on which cattle and pigs could not be effectively separated. Adverse reactions to vaccination, other than a slight to moderate increase in body temperature, were not observed. Outbreaks did not occur in vaccinated cattle during the 1979-1980 winter season; on the other hand, Aujeszky's disease was observed in the pigs on a number of farms. The serological effects of vaccination were followed up in forty-one animals on sixteen farms. Very high antibody titres were attained, particularly after the second vaccination. Antibody titres continued to be recorded after twelve months in a number of the animals followed.