Randomised, placebo-controlled trial of a live vaccine against porcine reproductive and respiratory syndrome virus in sows on infected farms
Autor: | Z Pejsak, Iwona Markowska-Daniel |
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Rok vydání: | 2006 |
Předmět: |
Swine
animal diseases Treatment outcome Porcine Reproductive and Respiratory Syndrome Placebo-controlled study Physiology Abortion law.invention Reproductive disease Double-Blind Method Randomized controlled trial law Animals Medicine Porcine respiratory and reproductive syndrome virus Estrous cycle Attenuated vaccine General Veterinary biology business.industry Vaccination Viral Vaccines General Medicine Porcine reproductive and respiratory syndrome virus biology.organism_classification Treatment Outcome Immunology Female Poland business |
Zdroj: | Veterinary Record. 158:475-478 |
ISSN: | 0042-4900 |
DOI: | 10.1136/vr.158.14.475 |
Popis: | A randomised, double-blinded, placebo-controlled study into the effectiveness and safety of a vaccine against porcine reproductive and respiratory syndrome virus (PRRSV) was carried out on three farms with a history compatible with chronic PRRSV infection; representative groups of sows and gilts were injected with a live vaccine against PRRSV, and during the next six weeks no side effects were observed. The remaining sows and gilts on the three farms were then vaccinated with the same vaccine. Again, no side effects were observed. There were significant reductions in abortion, reproductive disease, returns to oestrus and the numbers of stillborn pigs per sow, and significant increases in the numbers of liveborn pigs per sow and weaned pigs per sow among the vaccinated animals. |
Databáze: | OpenAIRE |
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