[Immunization of cattle against Aujeszky's disease with inactivated adjuvant vaccine].

The experiments with sheep and young cattle were carried out to test the immunizing efficacy of inactivated adjuvant vaccine against Aujeszky's disease. The vaccine application at doses of 1 ml and 2 ml to lambs at the age of eight to ten months caused the neutralizing antibody production with a significant rise of titres after revaccination. A survival of infection induced with a dose of 10(5.

[Immunization effectiveness of the inactivated vaccine against infectious bovine rhinotracheitis (IBR) with an oily adjuvant].

The adjuvant vaccine against infectious bovine rhinotracheitis (IBR) was tested as to its innocuousness and immunogenicity. The immunity response induced by a single or double application of different vaccine doses was evaluated according to the content of neutralization antibodies (NP) in the blood serum. A direct dependence was revealed between the size of the inoculum and NP content in the blood serum, with NP titres of 1 : 9.

Heterogeneity of pseudorabies virus studied by isoelectric separation.

Heterogeneity of four lines derived from a single strain of pseudorabies virus (PRV) was studied by isoelectric separation. The individual lines differed in the distribution pattern of infectious fractions separated in the pH range from 3.5 to 10.