Investigations of significance of vaccination against swine parvovirosis in persistently infected sows | Ispitivanje značaja vakcinacije protiv parvoviroze svinja kod perzistentno inficiranih krmača
2007
Lupulović, D., Naučni institut za veterinarstvo Novi Sad, Novi Sad (Serbia) | Milić, N., Fakultet veterinarske medicine, Beograd (Serbia) | Petrović, T., Naučni institut za veterinarstvo Novi Sad, Novi Sad (Serbia) | Prodanov, J., Naučni institut za veterinarstvo Novi Sad, Novi Sad (Serbia) | Lazić, S., Naučni institut za veterinarstvo Novi Sad, Novi Sad (Serbia)
Parvoviral infection of swine is a disease which is manifested in reproductive disorders in sows and gilts. Timely diagnostics and adequate prophylaxis prevent the occurrence and spread of this disease. Experimental investigations covered 21 sows, divided into two experimental and a third, the control, group. Animals of the first experimental group were vaccinated once before exposure to the boar using an inactivated vaccine, Porcilis Parvo, and animals of the second experimental group were vaccinated twice at an interval of 3 weeks, also using an inactivated vaccine, Parvovax. Sows of control group were not vaccinated. The results of the investigations indicate that there was an increase in the titre of specific antibodies following the vaccination of persistently infected sows with the swine parvovirus, and that the present antibodies did not prevent the creating of an immune response. It was established following a comparison of the geometric mean values of antibody titres of vaccinated sows that there was a significant increase in the antibody level following the two vaccinations using the Parvovax vaccine, against the titre values in sows vaccinated once with the Porcilis Parvo vaccine. In control animals, the average value of the antibody level was many times lower in comparison with the established values in the experimental groups. This provides justification for the implementation of immunoprophylaxis against swine parvovirosis by the vaccination of sows and gilts before mating using inactivated vaccines.
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