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The protocol for the intermediate and intermediate plus vaccines for the gumboro disease depends upon the maternal derived Antibody levels (MDA). MDA level is calculated on the basis of titers in the day 1 to day 3 chicks by the labortory and then by using the De lavander formula you can calculate the day of vaccination for IBDV (Gumboro disease). Normally the protocol used is at day 7 vaccinate the chicks with intermedite vaccines and the at day 14 vacccinate the chicks with intermediate plus vaccines.

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13y ago

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