Abstract:The comparative analysis of haemagglutination Inhibitation (HI)-antibody production against three lentogenic Newcastle disease virus vaccines BCRDV (F-strain), Izovac B1 Hitchner ® (B1 strain) and Cevac New L® (LaSota strain) was analyzed in broiler chicks. For this, three groups A, B and C, each consisted of 30 birds were vaccinated with single dosage at day 9 and the other group of 10 birds was maintained as unvaccinated control. Sera samples obtained randomly from 10 birds of each group on the day 17, 20… Show more
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