A total number of 90 one day old chicks were purchased from a poultry company at Mansoura city and divided into three groups (each of 30). All groups were prophylactically vaccinated according to the local routine vaccination programme. The first group (control group) was fed a basal diet (without probiotics), whereas 2^nd&3^rd groups were fed on the same basal diet supplemented with probiotics. At 42^nddays of age, broilers were slaughtered, processed and bacteriologically examined foraerobic plate count (APC),enumeration of Coliforms (MPN), E. coli count, detection of Salmonellae, Campylobacter jejuni and  E. coli where the log mean of APC in group 1, group2 and group3 were 5.5±0.9, 4.9±1 and 4.8±0.8 log₁₀cfu/ gm, the MPN of Coliforms were 3.4±0.9,3±0.9 and 2.7± 0.8 log₁₀cfu/ gm, E. coli count  were 3.3±1, 3±0.8 and 2.9±0.7 log₁₀ cfu/ gm with reduction percent from 40% to 30% and 33.3%, meanwhile The incidence of Salmonellae were reduced from 30% to 16.6% and 10% and Campylobacter jejuni incidence were reduced from 20% to 6.6% and 3.3% respectively. The experiment was triplicated and the results in group2 and group3 were reduced significantly (P<0.05).