In the VN test conducted to determine the specific humoral immune
response the difference between the treatments was found to be significant
already on week two following immunization (Table 6). The level of the
specific antibody remained 0 in the non-immunized group, and compared to
that the results of all groups differed significantly, except for the antibiotic
supplemented animals. The level of antibody measured for the antibiotic
supplemented group and the MOS supplemented groups did not differ
statistically