International Scholarly Research Notices / 2012 / Article / Tab 1

Research Article

Effect of Immunosuppression on Newcastle Disease Virus Persistence in Ducks with Different Immune Status

Table 1

Groups of ducks used to evaluate the effect of immunosuppression on persistence of Newcastle disease virus under different treatments.

Antibody grouping of ducksGroup code of ducksNumber of ducksTreatments
DexamethasonevNDVVaccination

Low antibody level1a13+++
1b3++
1c13++
1d3+

Medium antibody level2a13+++
2b3++
2c13++
2d3+

Nonimmunized3a12++
3b3+
3c12+
3d3

+: respective treatment administered; −: no treatment; vNDV: velogenic Newcastle disease virus; Groups tabulated as “a”: immunosuppressed and challenged with vNDV disease virus; Groups tabulated as “b”: immunosuppressed but not challenged; Groups tabulated as “c”: not immunosuppressed but challenged with vNDV; Groups tabulated as “d” are controls for group c: not immunosuppressed nor challenged; Group 3: comprises unvaccinated controls for the 4 test groups.

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