The effects of anaerobic cecal microflora lyophilized (AML) or frozen (AMF) on the digestive tract infection of broilers by Salmonella Enteritidis (SE) were studied. AML and AMF were used without previous bacterial identification. SE infection was more evident in ceca, followed by crop and duodenum. The infection was self limited both in treated and control groups. No significant difference between the positive control and the treated with AML group or AMF was observed. However, there was a reduction of the chick digestive system SE colonization, especially in the ceca, as well as in SE fecal excretion in the treated groups with AML and AMF, in comparison with the positive control group. No significant variation between the treatments with AML and AMF, in none of the evaluated parameters was observed. SE reduced body weight gain in the inoculated birds. The treatments with AML and AMF minimized weight reduction in the infected groups.
Broiler; Salmonella Enteritidis; probiotic; competitive exclusion; anaerobic microflora frozen; anaerobic microflora lyophilized
