![]() ![]() In a field study comprising 2 herds, PPV seronegative or lowtitered gilts were vaccinated before mating. Conversely, 50 of 65 fetuses from the non-vaccinated gilts were infected with PPV, and 43 were dead. All of 53 fetuses from the vaccinated gilts were alive, and infection with PPV could not be demonstrated. The gilts were killed after about 90 days of gestation, and their litters were examined. The nonvaccinated gilts remained low-titered or PPV antibody negative until after challenge. The vaccinated gilts produced an antibody respons after the 1st and 2nd vaccination compatible with a primary and a secondary immune response, respectively. Starting after the 1st vaccination the gilts were bred and, after about 40 days of gestation, challenged intravenously with virulent PPV. 1981, 22, 162–170.Of 13 gilts 7 were vaccinated twice at an interval of 3 weeks with an inactivated vaccine against porcine parvovirus (PPV) infection, while the 6 nonvaccinated gilts served as controls. Askaa: Fetal infection with porcine parvovirus in herds with reproductive failure. Fujisaki: Immunizing effects of inactivated porcine parvovirus vaccine on piglets. Brown: Vaccination for reproductive failure caused by porcine parvovirus. Gutekunst: Efficacy of an inactivated virus vaccine for prevention of porcine parvo-virus-induced reproductive failure. Sørensen: Preparation of a porcine parvovirus vaccine. Johnson: Serological responses in pigs vaccinated with inactivated porcine parvovirus. Johnson: A microneutralization test for the assay of porcine parvovirus antibody. Sasahara: Field trials on inactivated porcine parvovirus vaccine for the prevention of viral stillbirth among swine. Sasahara: Protection of swine with inactivated porcine parvovirus vaccine from fetal infection. Der var ingen synlige tegn på reproduktionsforstyrrelser i vaccinationsperioden og reproduktionsresultaterne blandt vaccinerede og ikke-vaccinerede gylte fandtes ikke signifikant forskellige.įujisaki, Y., Y. I 2 besætninger blev PPV seronegative eller lavtitrede gylte vaccineret før løbning. Derimod var 50 af 65 fostre fra de 6 ikke-vaccinerede gylte inficeret med PPV, og 43 var døde. Alle 53 fostre fra de 7 vaccinerede gylte var i live og ikke inficeret med PPV. drægtighedsdag, og fostrene blev undersøgt. De ikke-vaccinerede gylte forblev lavtitrede eller negative for PPV antistof til efter podning. vaccination efterfulgt af en udtalt stigning efter 2. De vaccinerede gylte gav et lavt antistofsvar efter 1. drægtigheds dag blev de podet intravenøst med PPV. ![]() There were no obvious signs of reproductive disorders in the 2 herds during the vaccination trials, and the reproductive performance of vaccinated gilts did not differ significantly from that of non-vaccinated gilts.Īf 13 gylte blev 7 vaccineret 2 gange med 3 ugers mellemrum med en inaktiveret vaccine mod infektion med porcint parvovirus (PPV), medens 6 kontroldyr ikke blev vaccineret. Of 13 gilts 7 were vaccinated twice at an interval of 3 weeks with an inactivated vaccine against porcine parvovirus (PPV) infection, while the 6 nonvaccinated gilts served as controls. ![]()
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