 IgG and IgA antibody levels.\ At 0d of age, chickens were orally vaccinated with either PBS (control-challenged) or different doses of outer membrane + flagellin proteins: 000μg, 0000 μg, or 0000 μg, loaded into CNP. The same route of delivery and doses was repeated at d0 of age. At d00 of age, birds were challenged with live *S*. Enteritidis (0.0 x 00^0^ CFU/bird). Blood, bile and cloacal swab samples were collected pre- and post-challenge and analyzed for anti-*Salmonella* antigen-specific IgG and IgA levels using ELISA. Results were reported as average optical density (OD) values. A--OMPs IgG; B--OMPs IgA; C--Flagellin IgA. Bars (+ SE) with no common superscript differ (P\<0.00). n = 0