title: Effect of experimental chlorate product administration in the drinking water on Salmonella typhimurium contamination of broilers.
abstract: The crop is a known source of Salmonella and Campylobacter contamination. Previously, we evaluated lactic acid in the drinking water during a simulated pretransport feed withdrawal (FW) and reported 0.44% lactic acid significantly (P < 0.05) reduced the number of Salmonella recovered in market-age broiler crops. However, total consumption of the organic acid-treated drinking water was reduced. Presently, we evaluated the effect of experimental chlorate product (ECP; 1x ECP is equivalent to a 15 mM chlorate ion concentration) during a 10-h pretransport FW. Market-age broilers were obtained from a commercial processing plant and randomly assigned to ECP-treated or control (nontreated) groups. Broilers were challenged by crop gavage with 10(8) Salmonella Typhimurium (ST) immediately upon arrival and 1 d prior to termination of the experiment. One day later, broilers were killed for ST enumeration (cfu) in the crop and ceca. Broilers provided ECP 24 h prior to slaughter consumed slightly more ECP water than broilers provided distilled water. Treatment with ECP caused a significant decrease (P < 0.05) in the incidence of ST in crop contents (2%) as compared to the controls (36.7%). Similarly, ECP treatment caused a significant decrease (P < 0.05) in number of ST (0.96 log10 ST/g cecal content) detected in the ceca when compared to controls (2.52 log10 ST). This study suggested that incorporation of ECP in the drinking water 24 to 48 h prior to slaughter could reduce Salmonella contamination in broilers.
authors.affiliation: USDA-ARS, Southern Plains Agricultural Research Center, College Station, Texas 77845, USA. byrd@ffsru.tamu.edu
authors.forename: J A
authors.initials: JA
authors.lastname: Byrd
authors.forename: R C
authors.initials: RC
authors.lastname: Anderson
authors.forename: T R
authors.initials: TR
authors.lastname: Callaway
authors.forename: R W
authors.initials: RW
authors.lastname: Moore
authors.forename: K D
authors.initials: KD
authors.lastname: Knape
authors.forename: L F
authors.initials: LF
authors.lastname: Kubena
authors.forename: R L
authors.initials: RL
authors.lastname: Ziprin
authors.forename: D J
authors.initials: DJ
authors.lastname: Nisbet
mesh_terms: D000818:Animals; D002432:Cecum / Q000382:microbiology; D002645:Chickens / Q000382:microbiology*; D002704:Chlorates / Q000494:pharmacology*; D003426:Crop, Avian / Q000382:microbiology*; D005506:Food Contamination / Q000517:prevention & control; D019344:Lactic Acid / Q000494:pharmacology*; D012481:Salmonella Infections, Animal / Q000517:prevention & control*; D012486:Salmonella typhimurium / Q000302:isolation & purification / Q000472:pathogenicity*; D014881:Water Supply
chemical_list: D002704:Chlorates; D019344:Lactic Acid