[Effect of colostral antibodies on the development of immunity in piglets immunized with live vaccine].
Pigs of sows treated with a live vaccine were in turn vaccinated with a live vaccine at different age. Part of them were challenged with a virus at 60 days of age, the remaining -- at 90 days. The pigs were kept under clinical observation, and were killed on the 10th day following challenge in order to be thoroughly investigated. It was found that the passive immunity (virus-neutralizing antibodies) in pigs of twice (live vaccine) treated sows persisted for 4 to 5 weeks after birth. It dropped steplike, however, the interference of the vaccinal virus speeded up the process -- the earlier the vaccination the faster the exhaustion of immunity. The passive immunity was found to neutralize the vaccinal virus and hamper the building of active immunity. The presence of eosinophile leukocytes in the lymph nodes, tonsils, and spleen of the vaccinated pigs spoke of an immune reaction.
D000818:Animals; D000831:Animals, Newborn; D000914:Antibodies, Viral / Q000032:analysis*; D003126:Colostrum / Q000276:immunology*; D004804:Eosinophils / Q000276:immunology; D005260:Female; D011558:Herpesvirus 1, Suid / Q000276:immunology*; D007112:Immunity, Maternally-Acquired; D007116:Immunization, Passive; D008198:Lymph Nodes / Q000276:immunology; D014066:Palatine Tonsil / Q000276:immunology; D011247:Pregnancy; D013552:Swine / Q000276:immunology*; D014765:Viral Vaccines / Q000008:administration & dosage*
D000914:Antibodies, Viral; D014765:Viral Vaccines
Vliianie a kolastrenite protivotela vurkhu na imuniteta pri praseta, vaksinirani s zhiva vaksina.