Pathological features of the lungs and liver of piglets under conditions of constant vaccination of livestock against circovirus infection

The pathogenicity of PCV 2 in the body vaccinated piglets was studied based on results pathomorphological changes lungs and liver animals. work carried out commercial with vaccine Ingelvak CircoFLEX (Germany) against circovirus. used clinical, zootechnical, enzyme immunoassay research methods. It has been established that under conditions ongoing vaccination PCV2, 30.3% still do not have virus-neutralizing antibodies. main reason for culling animals are circovirus diseases respiratory clinical signs, as well signs multisystem wasting syndrome, determining safety livestock at level 68.05%, average live weight 1 head moment its transfer fattening is 40.44±0.78 kg, daily gain 346.00±9.18 g. At autopsy, sick reveal an increase liver, inflammation them, a result circulatory disorders, damage to lymphoid tissue, development dystrophic necrotic changes. suggest order efficiency formation post-vaccination immunity, specific medical preparations can be stimulate immune response body, enhance resistance tissue