tailieunhanh - Báo cáo khoa học: "Efficacy of live B1 or Ulster 2C Newcastle disease vaccines simultaneously vaccinated with inactivated oil adjuvant vaccine for protection of Newcastle disease virus in broiler chickens"

Tuyển tập các báo cáo nghiên cứu về bệnh học thý y được đăng trên tạp chí Acta Veterinaria Scandinavica cung cấp cho các bạn kiến thức về bệnh thú y đề tài: Efficacy of live B1 or Ulster 2C Newcastle disease vaccines simultaneously vaccinated with inactivated oil adjuvant vaccine for protection of Newcastle disease virus in broiler chickens. | Acta Veterinaria Scandinavica BioMed Central Research Open Access Efficacy of live Bl or Ulster 2C Newcastle disease vaccines simultaneously vaccinated with inactivated oil adjuvant vaccine for protection of Newcastle disease virus in broiler chickens N Chansiripornchai and J Sasipreeyajan Address Department of Veterinary Medicine Faculty of Veterinary Science Chulalongkorn University Henri Dunant road Bangkok 10330 Thailand Email N Chansiripornchai - cniwat@ J Sasipreeyajan - jiroj_s@ Corresponding author Published 26 May 2006 Received 07 April 2006 Acta Veterinaria Scandinavian 2006 48 2 doi 1751-0147-48-2 Accepted 26 May 2006 This article is available from http content 48 1 2 2006 Chansiripornchai and Sasipreeyajan licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract Two hundred one-day-old broiler chicks were divided into groups 1 2 and 3 containing 60 70 and 70 chicks respectively. The groups were divided into subgroups of 10 chicks that were vaccinated according to the following scheme group 1 unvaccinated control group 2 vaccinated subcutaneously at 1 day old with inactivated oil adjuvant vaccine IOAV in combination with live B1 vaccine. Group 3 was vaccinated in the same mode as group 2 with IOAV and live Ulster 2C vaccine. All birds were challenged when they were 28 days old. Mortality rate body weight gain and feed conversion ratio FCR were monitored before and after challenge. All the chickens in group 1 died indicating that there was no disease resistance of this unvaccinated control group of chickens. Conversely the monitored disease resistance of chickens in groups 2 and 3 was and respectively P . The morbidity of chickens in .