 of birds in different treatment groups at 0d-post-*S*. Heidelberg challenge.  ![](pone.0000000.t000){#pone.0000000.t000g}    Sample                000 μl      00 μl   0 μl   Colonies counted (00^−0^)   MPN index/g   Log00   Average MPN value   SEM   --------------------- ----------- ------- ------ --------------------------- ------------- ------- ------------------- ------   Control               0           0       0      0                           0             0       0.00                0.00   0                     0           0       00     000                         0.0                                          0                     0           0       0      00                          0.0                                          0                     0           0       00     00                          0.0                                          0                     0           0       0      0                           0                                            0                     0           0       00     00                          0.0                                          CNP                   0           0       0      0                           00