Detection of MDA titer of ınfectious bronchitis virus and comparison of antibody titer produced by two different ınfectious bronchitis vaccine

The infectious bronchitis (IB) is divesting diseases of poultry. Hence, this study determined the maternally derived antibody (MDA) titer IBV and comparison two IB vaccine in layer. A total 1600 birds were equally allocated into groups (group-A group-B). group-A group-B vaccinated by different vaccines having strain “B1-Strain ND+Massachusetts B-41 Strains IBV” “Hitchner-B1 Strain H120 respectively. Blood samples collected was detected indirect ELISA test. Results showed that both had protective level MDA significantly (p<0.01) increased mean than MDA. Between groups, highest (11544.43±177.51) observed at 5 weeks age significant difference with (10222.11±96.96). effect size higher (14.25; CI: 9173.82-9564.39; n=46 birds) (9.54; 8580.19-9131.68; one-day-old Shortly, condition (p<0.05) (>853).