Приготовление антигена против сальмонеллеза и пастереллеза для гипериммунизации продуцентов лечебно-профилактической сыворотки
2009
Medvedev, A.P. | Koshnerova, L.A., Vitebsk State Academy of Veterinary Medicine (Belarus)
Experimental research on production of antigen preparation for hyperimmunization of bulls from blood of which it was possible to produce an active medical and preventive serum against cattle salmonellosis and pasteurellosis was realized in the conditions of the Republic of Belarus. There were developed four variants of antigen on the basis of the formolated aluminous concentrated vaccine against calf salmonellosis and on the basis of semiliquid aluminum hydroxide vaccine against cattle pesteurellosis. All obtained variants of associated antigen had concentration of hydrogen ions, which was close to the neutral rating; they were also sterile and safe for white mice. Associated antigen which was constructed from vaccines in the ratio of 1:1, 1:2, 1:3, and 2:3 had an ability to raise the protection of immunized experimental guinea pigs in the conditions of controlled introduction of infection with S. dublin 373 and S. tythimurium 371. Pasteurellosis component of associated antigen in 1:1 and 1:2 variants protected against death only 3 out of 5 immunized doves, both in relation to P. multocida strain N 796, and bacteria P. multocida strain N 5264. Vaccine ratio in the associated antigen 1:3 and 2:3 turned to be more immunogenically balanced: all tested doves survived after introduction of infection of broth culture P. multocida of N 796 and N 5264 strains. Experimental results showed that the associated antigen on the basis of vaccines in ratio of 1:3 was sterile, safe, active and suitable for hyperimmunization of bull producers serum against salmonellosis and pasteurellosis of calves, as well as antigen in the variant 2:3, but this ratio increased the expenses
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