Effect of on-farm litter acidification treatments on Campylobacter and Salmonella populations in commercial broiler houses in northeast Georgia.

Two commercially available litter treatments, aluminum sulfate and sodium bisulfate, were tested to determine their effect on Campylobacter and Salmonella levels associated with commercial broilers during a 6-wk grow-out period. A total of 20 broiler houses at 10 different locations were studied; 5 aluminum sulfate-treated houses, 5 sodium bisulfate-treated houses, and 10 paired, untreated control houses. A single application rate was investigated for each treatment. Fecal samples (n=20 per house) were analyzed at wk 2, 4, and 5 and 6 for Campylobacter and Salmonella. The results indicated that, at the application rates investigated, both acidifying litter treatments caused a slight delay in the onset of Campylobacter colonization in broiler chicks. Salmonella levels remained unaffected, with no significant effect seen with either treatment (P > 0.05). Campylobacter populations and Salmonella incidence associated with unprocessed, whole-carcass rinse samples (n=10 per house) analyzed at the end of production (wk 5 and 6) were unaffected by treatment.