Mortality
The mortality of chicks under different treatments
is presented in Table-4. The overall mortality
(0-6 weeks) during the experimental period was low
in thecontrol group and probiotic group as compared
to prebiotic group and synbiotic group. The variation
in mortality among different treatments might be
due to theseasonal influence of summer season and
cannot be ascribed as treatment effect. The mortality
observed in the present study agreed with the report of
Awad et al. [19] who reported lower mortality rate for
probiotic supplemented group (3%) than the synbiotic
supplemented group and control group (3.5%) in Ross
308 commercial broilers.