Todd R Callaway

Summary

Affiliation: Agricultural Research Service
Country: USA

Publications

  1. pmc Evaluation of the bacterial diversity in the feces of cattle using 16S rDNA bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP)
    Scot E Dowd
    USDA ARS Livestock Issues Research Unit, Lubbock, TX 79403, USA
    BMC Microbiol 8:125. 2008
  2. ncbi request reprint Diet, Escherichia coli O157:H7, and cattle: a review after 10 years
    Todd R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Curr Issues Mol Biol 11:67-79. 2009
  3. doi request reprint Evaluation of the bacterial diversity in cecal contents of laying hens fed various molting diets by using bacterial tag-encoded FLX amplicon pyrosequencing
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Poult Sci 88:298-302. 2009
  4. doi request reprint Occurrence of Salmonella-specific bacteriophages in swine feces collected from commercial farms
    Todd R Callaway
    Food and Feed Safety Research Unit, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 7:851-6. 2010
  5. doi request reprint Evaluation of bacterial diversity in the rumen and feces of cattle fed different levels of dried distillers grains plus solubles using bacterial tag-encoded FLX amplicon pyrosequencing
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    J Anim Sci 88:3977-83. 2010
  6. doi request reprint Evaluation of phage treatment as a strategy to reduce Salmonella populations in growing swine
    Todd R Callaway
    Food and Feed Safety Research Unit, Agricultural Research Service, US Department of Agriculture, College Station, TX 77845, USA
    Foodborne Pathog Dis 8:261-6. 2011
  7. doi request reprint Escherichia coli O157:H7 populations in ruminants can be reduced by orange peel product feeding
    Todd R Callaway
    Food and Feed Safety Research Unit, U S Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    J Food Prot 74:1917-21. 2011
  8. doi request reprint Probiotics, prebiotics and competitive exclusion for prophylaxis against bacterial disease
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Anim Health Res Rev 9:217-25. 2008
  9. doi request reprint Orange peel products can reduce Salmonella populations in ruminants
    Todd R Callaway
    Food and Feed Safety Research Unit, Agricultural Research Service, U S Department of Agriculture, 2881 F and B Road, College Station, TX 77845, USA
    Foodborne Pathog Dis 8:1071-5. 2011
  10. doi request reprint Bacteriophage isolated from feedlot cattle can reduce Escherichia coli O157:H7 populations in ruminant gastrointestinal tracts
    Todd R Callaway
    Food and Feed Safety Research Unit, U S Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    Foodborne Pathog Dis 5:183-91. 2008

Collaborators

Detail Information

Publications104 found, 100 shown here

  1. pmc Evaluation of the bacterial diversity in the feces of cattle using 16S rDNA bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP)
    Scot E Dowd
    USDA ARS Livestock Issues Research Unit, Lubbock, TX 79403, USA
    BMC Microbiol 8:125. 2008
    ..We have evaluated the microbiome from the feces of 20 commercial, lactating dairy cows...
  2. ncbi request reprint Diet, Escherichia coli O157:H7, and cattle: a review after 10 years
    Todd R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Curr Issues Mol Biol 11:67-79. 2009
    ..Data from researchers across North America indicate that diet does impact STEC/EHEC populations in cattle prior to slaughter; however the economic, logistic and practical impacts of dietary changes must be examined and accounted for...
  3. doi request reprint Evaluation of the bacterial diversity in cecal contents of laying hens fed various molting diets by using bacterial tag-encoded FLX amplicon pyrosequencing
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Poult Sci 88:298-302. 2009
    ..54 genera, respectively). Overall, the microbial diversity was least and Lactobacillius populations were not found in the hens undergoing feed withdrawal, which could explain much of these hens' sensitivity to colonization by Salmonella...
  4. doi request reprint Occurrence of Salmonella-specific bacteriophages in swine feces collected from commercial farms
    Todd R Callaway
    Food and Feed Safety Research Unit, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 7:851-6. 2010
    ..These results indicate that phages (predator) populations may vary along with Salmonella (prey) populations; and that phages could potentially be used as a food safety pathogen reduction strategy in swine...
  5. doi request reprint Evaluation of bacterial diversity in the rumen and feces of cattle fed different levels of dried distillers grains plus solubles using bacterial tag-encoded FLX amplicon pyrosequencing
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    J Anim Sci 88:3977-83. 2010
    ..Using bTEFAP, the normal microbiota of cattle were examined using modern molecular methods to understand how diets affect gastrointestinal ecology and the gastrointestinal contribution of the microbiome to animal health and production...
  6. doi request reprint Evaluation of phage treatment as a strategy to reduce Salmonella populations in growing swine
    Todd R Callaway
    Food and Feed Safety Research Unit, Agricultural Research Service, US Department of Agriculture, College Station, TX 77845, USA
    Foodborne Pathog Dis 8:261-6. 2011
    ..Further research needs to be performed to determine the most efficacious dosing regimens and the most effective combinations of phages targeting the diverse Salmonella population found in swine before they can enter the food supply...
  7. doi request reprint Escherichia coli O157:H7 populations in ruminants can be reduced by orange peel product feeding
    Todd R Callaway
    Food and Feed Safety Research Unit, U S Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    J Food Prot 74:1917-21. 2011
    ..coli O157:H7 were reduced (P < 0.05) by inclusion of both 5 and 10% OP diets. Our results demonstrate that orange peel products can be used as a preharvest intervention strategy as part of an integrated pathogen reduction scheme...
  8. doi request reprint Probiotics, prebiotics and competitive exclusion for prophylaxis against bacterial disease
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Anim Health Res Rev 9:217-25. 2008
    ..This review explores the ecology behind the efficacy of these products against pathogens found in food animals, including those that enter the food chain and impact human consumers...
  9. doi request reprint Orange peel products can reduce Salmonella populations in ruminants
    Todd R Callaway
    Food and Feed Safety Research Unit, Agricultural Research Service, U S Department of Agriculture, 2881 F and B Road, College Station, TX 77845, USA
    Foodborne Pathog Dis 8:1071-5. 2011
    ..Our results demonstrate that orange peel and pellets are environmentally friendly and low-cost products that can be used as a pre-harvest intervention as part of an integrated pathogen reduction scheme...
  10. doi request reprint Bacteriophage isolated from feedlot cattle can reduce Escherichia coli O157:H7 populations in ruminant gastrointestinal tracts
    Todd R Callaway
    Food and Feed Safety Research Unit, U S Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    Foodborne Pathog Dis 5:183-91. 2008
    ..10) in any of the studies due to relatively low inoculated E. coli O157:H7 ruminal populations. Our results demonstrate that phage can be used as a preharvest intervention as part of an integrated pathogen reduction scheme...
  11. doi request reprint Effect of nitroethane, dimethyl-2-nitroglutarate and 2-nitro-methyl-propionate on ruminal methane production and hydrogen balance in vitro
    Robin C Anderson
    United States Department of Agriculture Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, Texas 77845 USA
    Bioresour Technol 101:5345-9. 2010
    ..05) than non-treated controls. Quantification of fermentation end-products produced and H(2) balance estimates indicate that fermentation efficiencies were not compromised by the nitro-treatments...
  12. ncbi request reprint Zoonotic bacterial populations, gut fermentation characteristics and methane production in feedlot steers during oral nitroethane treatment and after the feeding of an experimental chlorate product
    Hector Gutierrez-Banuelos
    Department of Animal Science, Texas A and M University, College Station, TX 77843, USA
    Anaerobe 13:21-31. 2007
    ..Further research is warranted to determine if the optimization of dosage of nitroethane or related nitrocompouds can maintain the enteropathogen control and anti-methanogen effect in fed steers...
  13. ncbi request reprint Low level nitrate or nitroethane preconditioning enhances the bactericidal effect of suboptimal experimental chlorate treatment against Escherichia coli and Salmonella Typhimurium but not Campylobacter in swine
    Robin C Anderson
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA ARS, College Station, Texas 77845, USA
    Foodborne Pathog Dis 3:461-5. 2006
    ....
  14. ncbi request reprint Further characterization of Campylobacter isolated from U.S. dairy cows
    Roger B Harvey
    Food and Feed Safety Research Unit, Southern Plains Area Research Center, Agricultural Research Service, U S Department of Agriculture, 2881 F and B Road, College Station, TX 77845 4988, USA
    Foodborne Pathog Dis 2:182-7. 2005
    ..Under the conditions of our study, we concluded that ribotyping is not as discriminatory as PCR for speciation, and that a phenotypic trait such as antimicrobial resistance cannot always be predicted within the same genotype...
  15. doi request reprint Prevalence and concentration of Campylobacter in rumen contents and feces in pasture and feedlot-fed cattle
    Nathan A Krueger
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, United States Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 5:571-7. 2008
    ..29). Our results suggest that the rumen environment and its microbial population are less favorable for the growth of Campylobacter and that concentrate diets may provide a more hospitable lower gastrointestinal tract for Campylobacter...
  16. doi request reprint Influence of wet distiller's grains on prevalence of Escherichia coli O157:H7 and Salmonella in feedlot cattle and antimicrobial susceptibility of generic Escherichia coli isolates
    Tom S Edrington
    Southern Plains Agricultural Research Center, Agricultural Research Service, US Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 7:605-8. 2010
    ..coli O157:H7, and only modest differences (decreases) in Salmonella prevalence with no apparent affect on antimicrobial susceptibility of fecal coliform isolates...
  17. doi request reprint Effect of thymol or diphenyliodonium chloride on performance, gut fermentation characteristics, and campylobacter colonization in growing swine
    Robin C Anderson
    U S Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, TX 77845, USA
    J Food Prot 75:758-61. 2012
    ....
  18. ncbi request reprint Effects of nitrate or nitro supplementation, with or without added chlorate, on Salmonella enterica serovar Typhimurium and Escherichia coli in swine feces
    Robin C Anderson
    U S Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, Texas, USA
    J Food Prot 70:308-15. 2007
    ..05) Salmonella but not necessarily E. coli concentrations. 2-Nitro-1-propanol and 2-nitroethanol exhibited inhibitory activity against Salmonella and E. coli by an undetermined mechanism, even in the absence of added chlorate...
  19. ncbi request reprint HPLC determination of chlorate metabolism in bovine ruminal fluid
    Ross C Beier
    Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, TX, USA
    J Environ Sci Health B 42:717-26. 2007
    ..coli at 24 h, but may be useful when the reducing equivalents are limiting as in waste holding reservoirs or composting systems required for intense animal production...
  20. ncbi request reprint Effects of nitroethane and monensin on ruminal fluid fermentation characteristics and nitrocompound-metabolizing bacterial populations
    Hector Gutierrez-Banuelos
    Department of Animal Science, Texas A and M University, College Station, Texas 77843, USA
    J Agric Food Chem 56:4650-8. 2008
    ..5 and 9 mM nitroethane compared to numbers recovered from controls or monensin-containing treatments, which may explain ruminal adaptation to lower nitroethane treatments...
  21. doi request reprint Clostridium difficile in poultry and poultry meat
    Roger B Harvey
    Food and Feed Safety Research Unit, SPARC, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 8:1321-3. 2011
    ..Susceptibilities to 11 antimicrobial agents in the current study suggested somewhat reduced resistance than reported for other meat or animal toxinotype V isolates...
  22. doi request reprint Effects of select nitrocompounds on in vitro ruminal fermentation during conditions of limiting or excess added reductant
    Robin C Anderson
    United States Department of Agriculture, Agricultural Research Service, College Station, TX 77845, USA
    Bioresour Technol 99:8655-61. 2008
    ..These results suggest that nitro-treatment inhibited formate dehydrogenase/formate hydrogen lyase and hydrogenase activity...
  23. ncbi request reprint Effects of ractopamine HCl on Escherichia coli O157:H7 and Salmonella in vitro and on intestinal populations and fecal shedding in experimentally infected sheep and pigs
    Thomas S Edrington
    Food and Feed Safety Research Unit, Agricultural Research Service United States Department of Agriculture, College Station, TX 77845, USA
    Curr Microbiol 53:82-8. 2006
    ..coli O157:H7 and Salmonella. Because ractopamine is currently approved to be fed to finishing cattle and swine immediately before slaughter, any potential for decreasing foodborne pathogens has exciting food safety implications...
  24. ncbi request reprint Prevalence and antimicrobial resistance profiles of Escherichia coil O157:H7 and Salmonella isolated from feedlot lambs
    Tom S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, U S Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    J Food Prot 72:1713-7. 2009
    ..coli O157:H7 and Salmonella and wool can be a source of carcass contamination; however, in-plant processing procedures and intervention strategies were largely effective in preventing carcass contamination...
  25. ncbi request reprint Seasonal shedding of Escherichia coli O157:H7 in ruminants: a new hypothesis
    Tom S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA ARS, College Station, Texas 77845, USA
    Foodborne Pathog Dis 3:413-21. 2006
    ..20) to control levels. Understanding the mechanisms underlying the seasonality of this important foodborne pathogen will enable the implementation of effective control strategies when it is most prevalent...
  26. doi request reprint Effects of ionophores on Enterococcus faecalis and E. faecium growth in pure and mixed ruminal culture
    David J Nisbet
    U S Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    Foodborne Pathog Dis 5:193-8. 2008
    ..Our results indicate that the role of ionophores in the dissemination of antibiotic resistance genes through the intestinal Enterococcus spp. appears to be limited...
  27. doi request reprint Influence of weaning on fecal shedding of pathogenic bacteria in dairy calves
    Tom S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 8:395-401. 2011
    ..Results of the current research indicate that the weaning of dairy calves does not increase the prevalence of pathogenic bacteria or substantially modify antimicrobial susceptibility profiles of these bacteria...
  28. doi request reprint Effects of the dicarboxylic acids malate and fumarate on E. coli O157:H7 and Salmonella enterica typhimurium populations in pure culture and in mixed ruminal microorganism fermentations
    David J Nisbet
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Curr Microbiol 58:488-92. 2009
    ..05) by > or =10 mM dicarboxylic acid addition. These results confirm that dicarboxylic acids can modify ruminal fermentation, but they do not affect populations of critical foodborne pathogens...
  29. doi request reprint Ecology of Enterococcus faecalis and niche-adapted or non-niche-adapted Enterococcus faecium in continuous-flow anaerobic cultures
    Toni L Poole
    Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 6:901-6. 2009
    ..faecium strains was due to factors other than the two-component cytolysin...
  30. doi request reprint Influence of exogenous melatonin on horizontal transfer of Escherichia coli O157:H7 in experimentally infected sheep
    Tom S Edrington
    Southern Plains Agricultural Research Center, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 6:729-31. 2009
    ..Melatonin treatment had no effect (p > 0.10) on daily fecal shedding, luminal content concentrations, or in the percentage of gastrointestinal tract tissue positive for the inoculated strain of E. coli O157:H7...
  31. doi request reprint Effect of nitroethane and nitroethanol on the production of indole and 3-methylindole (skatole) from bacteria in swine feces by gas chromatography
    Ross C Beier
    U S Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, College Station, Texas 77845 4988, USA
    J Environ Sci Health B 44:613-20. 2009
    ..0% (P = 0.02) and 23.5% skatole production, respectively, and a decrease of 14.9% indole at 6 h, but an increase in indole production of 81.1% at 24 h...
  32. ncbi request reprint Experimental use of 2-nitropropanol for reduction of Salmonella Typhimurium in the ceca of broiler chicks
    Yong Soo Jung
    US Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, Texas 77845, USA
    J Food Prot 67:1945-7. 2004
    ..05) by 48, but not 24, hours posttreatment than those from the group treated with 6.5 mg 2NPOH per bird. These results demonstrate the inhibitory activity of 2NPOH against Salmonella Typhimurium in vivo...
  33. ncbi request reprint Salmonella genotype diversity in nonlactating and lactating dairy cows
    Michael E Hume
    U S Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, Texas 77845, USA
    J Food Prot 67:2280-3. 2004
    ..The presence of multiple serotypes and genotypes in the herd suggests multiple contamination sources. However, there was no conclusive effect of lactation status of the cows on Salmonella genotypic shedding...
  34. ncbi request reprint Prevalence of multidrug-resistant Salmonella on commercial dairies utilizing a single heifer raising facility
    Tom S Edrington
    U S Department of Agriculture, Agricultural Research Service, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, Texas 77845, USA
    J Food Prot 71:27-34. 2008
    ..Results of this research suggest the incidence of MDR Salmonella, found primarily in hutch calves and cattle in the sick-fresh pen, is low in comparison to the overall Salmonella prevalence...
  35. ncbi request reprint Pathogen prevalence and influence of composted dairy manure application on antimicrobial resistance profiles of commensal soil bacteria
    Tom S Edrington
    Southern Plains Agricultural Research Center, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 6:217-24. 2009
    ..No treatment differences were observed in antimicrobial resistance patterns in any of the soil isolates examined. Results reported herein support the use of composted dairy manure as an environmentally friendly soil amendment...
  36. doi request reprint Persistence of resistance plasmids carried by beta-hemolytic Escherichia coli when maintained in a continuous-flow fermentation system without antimicrobial selection pressure
    Toni L Poole
    Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 8:535-40. 2011
    ..Other strategies rather than merely reducing antimicrobial usage are needed to combat the emergence of MDR bacteria...
  37. ncbi request reprint Effect of feeding the ionophores monensin and laidlomycin propionate and the antimicrobial bambermycin to sheep experimentally infected with E. coli O157:H7 and Salmonella typhimurium
    T S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA, ARS, College Station, TX 77845, USA
    J Anim Sci 81:553-60. 2003
    ..coli O157:H7 isolates. Results from these studies indicate that short-term ionophore feeding had very limited effects on E. coli and Salmonella shedding or on antimicrobial susceptibility in experimentally infected lambs...
  38. ncbi request reprint Effect of ionophore supplementation on the incidence of Escherichia coli O157:H7 and Salmonella and antimicrobial susceptibility of fecal coliforms in Stocker cattle
    T S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA ARS, College Station, Texas 77845, USA
    Foodborne Pathog Dis 3:284-91. 2006
    ..10) among treatments. Ionophore supplementation had no affect on fecal shedding of E. coli O157:H7 or Salmonella and a negligible impact on antimicrobial susceptibility patterns of fecal coliforms in beef calves...
  39. doi request reprint Influence of vitamin D on fecal shedding of Escherichia coli O157:H7 in naturally colonized cattle
    Tom S Edrington
    U S Department of Agriculture, Agricultural Research Service, Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, College Station, TX 77845, USA
    J Food Prot 75:314-9. 2012
    ..coli O157:H7 was 16.7 and 6.7% for the summer and winter collections, respectively. Results of this research do not support a correlation between vitamin D intake and E. coli O157:H7 shedding in cattle...
  40. ncbi request reprint E. coli O157 and Salmonella spp. in white-tailed deer and livestock
    Loree A Branham
    Angelo State University, San Angelo, TX 76909 USDA ARS, College Station, TX 77845, USA
    Curr Issues Intest Microbiol 6:25-9. 2005
    ..were also found in sampled water troughs, goats, and cattle (5.00%, 3.70%, and 1.25%, respectively). Further research examining pathogen distribution is needed to determine if white-tailed deer are a natural reservoir for these bacteria...
  41. ncbi request reprint Campylobacter prevalence in lactating dairy cows in the United States
    Roger B Harvey
    Food and Feed Safety Research Unit, Southern Plains Area Research Center, Agricultural Research Service, U S Department of Agriculture, 2881 F and B Road, College Station, Texas 77845 4988, USA
    J Food Prot 67:1476-9. 2004
    ..jejuni, and that the majority of these isolates are sensitive to antibiotics...
  42. doi request reprint Citrus products decrease growth of E. coli O157:H7 and Salmonella typhimurium in pure culture and in fermentation with mixed ruminal microorganisms in vitro
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    Foodborne Pathog Dis 5:621-7. 2008
    ..Further research is needed to determine whether the antimicrobial activity of orange products against E. coli O157:H7 or Salmonella Typhimurium is expressed in the lower gastrointestinal tract...
  43. ncbi request reprint Effect of ractopamine HCl supplementation on fecal shedding of Escherichia coli O157:H7 and Salmonella in feedlot cattle
    T S Edrington
    Food and Feed Safety Research Unit, ARS USDA, 2881, F and B Road, College Station, TX 77845, USA
    Curr Microbiol 53:340-5. 2006
    ..08) with the ractopamine treatment when data were pooled across replicates. Although further research is required to confirm these results, the potential food safety implications of this research are intriguing...
  44. ncbi request reprint What are we doing about Escherichia coli O157:H7 in cattle?
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, ARS, USDA, College Station, TX 77845, USA
    J Anim Sci 82:E93-99. 2004
    ..Overall, the concurrent use of several of these preslaughter intervention strategies could synergistically decrease human illnesses by providing for additional barriers in a multiple-hurdle approach to improving food safety...
  45. ncbi request reprint Toxicity and metabolism of the conjugates of 3-nitropropanol and 3-nitropropionic acid in forages poisonous to livestock
    Robin C Anderson
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, 2881 F and B Road, College Station, Texas 77845, USA
    J Agric Food Chem 53:2344-50. 2005
    ..Rates of ruminal nitrotoxin metabolism can be enhanced by modifying the rumen environment through dietary manipulations, which suggests in vivo enrichment of competent nitrotoxin-metabolizing bacteria such as D. detoxificans...
  46. ncbi request reprint Effects of exogenous melatonin and tryptophan on fecal shedding of E. coli O157:H7 in cattle
    Tom S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA ARS, College Station, TX 77845, USA
    Microb Ecol 55:553-60. 2008
    ..20), concentrations were elevated in TRP-treated animals. The decrease in the number of positive fecal samples observed in the first experiment, may be related to gastrointestinal MEL, affected by the 10x, but not 1x MEL dose...
  47. ncbi request reprint Influence of beta-agonists (ractopamine HCl and zilpaterol HCl) on fecal shedding of Escherichia coli O157:H7 in feedlot cattle
    Tom S Edrington
    Food and Feed Safety Research Unit, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    J Food Prot 72:2587-91. 2009
    ..1%). The current research showed minimal effects of beta-agonists on fecal shedding of E. coli O157:H7 and indicated that these compounds (fed immediately prior to slaughter) are not a cause for concern from a food safety standpoint...
  48. doi request reprint Acyl-homoserine-lactone autoinducer in the gastrointestinal [corrected] tract of feedlot cattle and correlation to season, E. coli O157:H7 prevalence, and diet
    T S Edrington
    Food and Feed Safety Research Unit, Agricultural Research Service, United States Department of Agriculture, College Station, TX 77845, USA
    Curr Microbiol 58:227-32. 2009
    ..However, it is unclear whether this is because the pH of the lower gut destroys the AHL or because a lack of certain bacteria in the lower gut producing AHL...
  49. ncbi request reprint Reduction of Salmonella Typhimurium in experimentally challenged broilers by nitrate adaptation and chlorate supplementation in drinking water
    Yong Soo Jung
    U S Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, Texas 77845, USA
    J Food Prot 66:660-3. 2003
    ..On the basis of these results, preadaptation with SN followed by ECP supplementation immediately preharvest could be a potential strategy for the reduction of Salmonella Typhimurium in broilers...
  50. ncbi request reprint Influence of exogenous triiodothyronine (T3) on fecal shedding of Escherichia coli O157 in cattle
    Tom S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA ARS, 2881 F and B Road, College Station, TX 77845, USA
    Microb Ecol 53:664-9. 2007
    ..01) when examined across the entire experimental period. Results of this research indicate that the thyroid or its hormones may be involved in the seasonal shedding patterns of E. coli O157 in cattle...
  51. ncbi request reprint Examination of heat stress and stage of lactation (early versus late) on fecal shedding of E. coli O157:H7 and Salmonella in dairy cattle
    T S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA, ARS, College Station, Texas 77845, USA
    Foodborne Pathog Dis 1:114-9. 2004
    ..coli O157:H7 and Salmonella...
  52. ncbi request reprint Molting in Salmonella enteritidis-challenged laying hens fed alfalfa crumbles. I. Salmonella enteritidis colonization and virulence gene hilA response
    K D Dunkley
    Department of Poultry Science, Texas A and M University, College Station, TX 77843, USA
    Poult Sci 86:1633-9. 2007
    ..The results of these studies support the concept that changes in the gastrointestinal tract microenvironment, such as those created during feed deprivation, encourage Salmonella Enteritidis virulence and susceptibility in molted hens...
  53. ncbi request reprint Effects of sodium chlorate on antibiotic resistance in Escherichia coli O157:H7
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, Texas 77845, USA
    Foodborne Pathog Dis 1:59-63. 2004
    ..However, further research is needed to confirm these results...
  54. ncbi request reprint Cell yields and fermentation responses of a Salmonella Typhimurium poultry isolate at different dilution rates in an anaerobic steady state continuous culture
    Kingsley D Dunkley
    Department of Poultry Science, Texas A and M University, College Station, TX 77843 2472, USA
    Antonie Van Leeuwenhoek 96:537-44. 2009
    ..Acetate, the most predominant fatty acid produced, declined at the higher dilution rates, as did propionate. Ammonia production remained stable at the lowest dilution rates, but increased significantly at a dilution rates above 0.27/h...
  55. ncbi request reprint Effect of select nitrocompounds on ruminal fermentation; an initial look at their potential to reduce economic and environmental costs associated with ruminal methanogenesis
    Robin C Anderson
    United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Rd, College Station, TX 77845, USA
    Bioresour Technol 90:59-63. 2003
    ....
  56. ncbi request reprint Competitive exclusion of Salmonella from the gut of neonatal and weaned pigs
    K J Genovese
    U S Department of Agriculture, Agricultural Research Service, Food and Feed Safety Research Unit Southern Plains Agricultural Research Center, College Station, Texas 77845, USA
    J Food Prot 66:1353-9. 2003
    ..05). Litters containing both TC and UC or both TC and US also shed Salmonella at lower rates than did litters in which only UC and US were present (P < 0.05)...
  57. ncbi request reprint Effect of experimental chlorate product administration in the drinking water on Salmonella typhimurium contamination of broilers
    J A Byrd
    USDA ARS, Southern Plains Agricultural Research Center, College Station, Texas 77845, USA
    Poult Sci 82:1403-6. 2003
    ..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...
  58. ncbi request reprint Characterization of antimicrobial resistant Salmonella Kinshasa from dairy calves in Texas
    K M Bischoff
    US Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, TX, USA
    Lett Appl Microbiol 38:140-5. 2004
    ..To determine the prevalence of antimicrobial resistance among Salmonella isolated from a central Texas dairy calf farm that raises animals for dairy-beef production...
  59. ncbi request reprint Escherichia coli O157:H7 becomes resistant to sodium chlorate in pure culture, but not in mixed culture or in vivo
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA, TX 77845, USA
    J Appl Microbiol 91:427-34. 2001
    ..Chlorate kills Escherichia coli O157:H7 and may be an effective feed additive for use in food animals. This study was designed to determine if development of chlorate-resistant E. coli O157:H7 strains was likely...
  60. ncbi request reprint Variation in the faecal shedding of Salmonella and E. coli O157:H7 in lactating dairy cattle and examination of Salmonella genotypes using pulsed-field gel electrophoresis
    T S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA, ARS, College Station, TX 77845, USA
    Lett Appl Microbiol 38:366-72. 2004
    ..To examine the variability in faecal shedding of Salmonella and Escherichia coli O157:H7 in healthy lactating dairy cattle and to evaluate the genetic relatedness of Salmonella isolates...
  61. ncbi request reprint Effect of the thyroid on faecal shedding of E. coli O157:H7 and Escherichia coli in naturally infected yearling beef cattle
    C L Schultz
    USDA ARS Southern Plains Agricultural Research Center, College Station, TX 77845, USA
    J Appl Microbiol 99:1176-80. 2005
    ..To determine if thyroid function affects faecal shedding of Escherichia coli O157:H7...
  62. ncbi request reprint Novel preharvest strategies involving the use of experimental chlorate preparations and nitro-based compounds to prevent colonization of food-producing animals by foodborne pathogens
    R C Anderson
    United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, Texas 77845, USA
    Poult Sci 84:649-54. 2005
    ..At present, neither chlorate nor the nitrocompounds have been approved as feed additives by the US Food and Drug Administration, and consequently they are not yet available for commercial use...
  63. ncbi request reprint Effects of sodium chlorate on toxin production by Escherichia coli O157:H7
    T R Callaway
    Feed and Food Safety Research Unit, Southern Plains Agricultural Research Center, 2881 F and B Rd, College Station, TX 77845, USA
    Curr Issues Intest Microbiol 5:19-22. 2004
    ..Chlorate appears to be an effective method to reduce shiga toxin-producing E. coil (STEC) populations in food animals, but additional studies are warranted before it is used to control infections...
  64. ncbi request reprint Inhibitory activity of 2-nitropropanol against select food-borne pathogens in vitro
    Y S Jung
    United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, TX 77845, USA
    Lett Appl Microbiol 39:471-6. 2004
    ..To test the inhibitory activity of 2-nitro-1-propanol (2NPOH) against Salmonella Typhimurium, Escherichia coli O157:H7 and Enterococcus faecalis...
  65. ncbi request reprint Recent pre-harvest supplementation strategies to reduce carriage and shedding of zoonotic enteric bacterial pathogens in food animals
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Anim Health Res Rev 5:35-47. 2004
    ..This review emphasizes work with Escherichia coli O157:H7 to illustrate the various strategies...
  66. ncbi request reprint Influence of sprinklers, used to alleviate heat stress, on faecal shedding of E. coli O157:H7 and Salmonella and antimicrobial susceptibility of Salmonella and Enterococcus in lactating dairy cattle
    T S Edrington
    US Department of Agriculture, Agricultural Research Service, Food and Feed Safety Research Unit, TX, USA
    Lett Appl Microbiol 48:738-43. 2009
    ..To determine the effect of sprinklers on faecal shedding of Escherichia coli (E. coli) O157:H7 and Salmonella in lactating dairy cattle...
  67. ncbi request reprint Environmental prevalence and persistence of Salmonella spp. in outdoor swine wallows
    T R Callaway
    Food and Feed Safety Research Unit, U S Department of Agriculture Agricultural Research Service USDA ARS, 2881 F and B Road, College Station, TX 77845, USA
    Foodborne Pathog Dis 2:263-73. 2005
    ..In conclusion, the role of wallows in disseminating Salmonella within an outdoor swine herd appears to be significant...
  68. ncbi request reprint Effect of lactic acid administration in the drinking water during preslaughter feed withdrawal on Salmonella and Campylobacter contamination of broilers
    J A Byrd
    US Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, Texas 77845, USA
    Poult Sci 80:278-83. 2001
    ..7% compared with the controls. These studies suggest that incorporation of lactic acid in the drinking water during pretransport FW may reduce Salmonella and Campylobacter contamination of crops and broiler carcasses at processing...
  69. ncbi request reprint Effect of subtherapeutic concentrations of tylosin on the inhibitory stringency of a mixed anaerobe continuous-flow culture of chicken microflora against Escherichia coli O157:H7
    T L Poole
    United States Department of Agriculture, Agricultural Research Service, College Station Texas, USA
    J Appl Microbiol 94:73-9. 2003
    ....
  70. ncbi request reprint Prevalence of Escherichia coli O157 in cattle and swine in central Mexico
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    J Food Prot 67:2274-6. 2004
    ..coli O157 in humans in Mexico. However, further research is needed to verify prevalence throughout other regions of Mexico, as well as prevalence during other seasons of the year...
  71. ncbi request reprint Escherichia coli O157:H7 populations in sheep can be reduced by chlorate supplementation
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, 2881 F and B Road, College Station, Texas 77845, USA
    J Food Prot 66:194-9. 2003
    ..On the basis of these results, it appears that chlorate treatment can be an effective method for the reduction of E. coli O157:H7 populations in ruminant animals immediately prior to slaughter...
  72. ncbi request reprint Sodium chlorate supplementation reduces E. coli O157:H7 populations in cattle
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    J Anim Sci 80:1683-9. 2002
    ..Therefore, it appears that chlorate supplementation is a viable potential strategy to reduce E. coli O157:H7 populations in cattle prior to harvest...
  73. ncbi request reprint Effect of oral sodium chlorate administration on Escherichia coli O157:H7 in the gut of experimentally infected pigs
    R C Anderson
    USDA ARS, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, TX 77845, USA
    Int J Food Microbiol 71:125-30. 2001
    ..coli O157:H7-challenged pigs with 200 mM chlorate caused reductions in gut concentrations of E. coli O157:H7; however, the reductions were not necessarily greater than those achieved with the 100 mM chlorate treatment...
  74. ncbi request reprint Gastrointestinal microbial ecology and the safety of our food supply as related to Salmonella
    T R Callaway
    Agricultural Research Service, Food and Feed Safety Research Unit, College Station, TX 77845, USA
    J Anim Sci 86:E163-72. 2008
    ....
  75. ncbi request reprint Social stress increases fecal shedding of Salmonella typhimurium by early weaned piglets
    T R Callaway
    Food and Feed Safety Research Unit, USDA ARS, College Station, TX 77845, USA
    Curr Issues Intest Microbiol 7:65-71. 2006
    ....
  76. ncbi request reprint Handling may cause increased shedding of Escherichia coli and total coliforms in pigs
    Scot E Dowd
    Livestock Issues Research Unit, USDA Agricultural Research Service, Lubbock, TX 79403, USA
    Foodborne Pathog Dis 4:99-102. 2007
    ..coli and total coliforms, possibly due to stress, and these populations of bacteria may have potential utility as inexpensive, noninvasive indicators of handling-related stress in pigs...
  77. doi request reprint Effects of thymol and diphenyliodonium chloride against Campylobacter spp. during pure and mixed culture in vitro
    R C Anderson
    United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, Texas, USA
    J Appl Microbiol 107:1258-68. 2009
    ..To determine if the purported deaminase inhibitors diphenyliodonium chloride (DIC) and thymol reduce the growth and survivability of Campylobacter...
  78. ncbi request reprint Effect of drinking-water administration of experimental chlorate ion preparations on Salmonella enterica serovar Typhimurium colonization in weaned and finished pigs
    R C Anderson
    United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, TX 77845, USA
    Vet Res Commun 28:179-89. 2004
    ..These results suggest that ECP administered to pigs just days before slaughter may reduce gut concentrations of Salmonella; however, the impacts of such reductions on slaughter hygiene have yet to be determined...
  79. ncbi request reprint Effects of the antibiotic ionophores monensin, lasalocid, laidlomycin propionate and bambermycin on Salmonella and E. coli O157:H7 in vitro
    T S Edrington
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA, ARS, College Station, TX, USA
    J Appl Microbiol 94:207-13. 2003
    ..To examine the effects of ionophores on Salmonella and Escherichia coli O157:H7 in pure and mixed ruminal fluid cultures...
  80. ncbi request reprint Effect of water sprinkling on incidence of zoonotic pathogens in feedlot cattle
    J L Morrow
    Livestock Issues Research Unit, ARS, USDA, Lubbock, TX 79409, USA
    J Anim Sci 83:1959-66. 2005
    ..Performance measures and carcass traits did not differ between treatments (P > 0.10). Under our conditions, sprinkling cattle with water did not affect the incidence of zoonotic pathogens in feces or on hides...
  81. doi request reprint Decreased competiveness of the foodborne pathogen Campylobacter jejuni during Co-culture with the hyper-ammonia producing anaerobe Clostridium aminophilum
    R C Anderson
    Food and Feed Safety Research Unit, United States Department of Agriculture, Agricultural Research Service, College Station, Texas 77845, USA
    Folia Microbiol (Praha) 55:309-11. 2010
    ..aminophilum may be able to outcompete asaccharolytic C. jejuni for amino acid substrates and that this competitive ability was eliminated by addition on monensin...
  82. ncbi request reprint Antimicrobial resistance and serotype prevalence of Salmonella isolated from dairy cattle in the southwestern United States
    T S Edrington
    USDA ARS SPA, Food and Feed Saftey Research Laboratory, College Station, TX 77845, USA
    Microb Drug Resist 10:51-6. 2004
    ..The most prevalent resistance patterns observed in this study were toward antimicrobial agents commonly used in cattle, while all Salmonella isolates were susceptible to ceftriaxone and ciprofloxacin, antibiotics used in human medicine...
  83. ncbi request reprint The hygiene hypothesis and foodborne illnesses: too much of a good thing, or is our food supply too clean?
    T R Callaway
    Food and Feed Safety Research Unit, USDA ARS, College Station, Texas 77845, USA
    Foodborne Pathog Dis 3:217-9. 2006
  84. doi request reprint Effects of the ergot alkaloids dihydroergotamine, ergonovine, and ergotamine on growth of Escherichia coli O157:H7 in vitro
    M L Looper
    Dale Bumpers Small Farms Research Center, Agricultural Research Service, U S Department of Agriculture, Booneville, Arkansas 72927, USA
    Foodborne Pathog Dis 5:599-604. 2008
    ..Ruminal and (or) intestinal populations of E. coli O157:H7 may be influenced in livestock consuming endophyte-infected tall fescue, and these alterations could be due to the presence of ergot alkaloids in fescue plants...
  85. ncbi request reprint Influence of dietary endophyte (Neotyphodium coenophialum)-infected tall fescue (Festuca arundinacea) seed on fecal shedding of antibiotic resistance-selected Escherichia coli O157:H7 in ewes
    M L Looper
    USDA ARS, Dale Bumpers Small Farms Research Center, Booneville, AR 72927, USA
    J Anim Sci 85:1102-8. 2007
    ..49) for HI-E and LO-E ewes. We conclude that short-term feeding of HI-E tall fescue seed may alter the concentrations of prolactin and NEFA, and may increase fecal shedding of E. coli O157:H7 in experimentally inoculated ewes...
  86. ncbi request reprint Forage feeding to reduce preharvest Escherichia coli populations in cattle, a review
    T R Callaway
    Food and Feed Safety Research Unit, South Plains Agricultural Research Center, Agricultural Research Service, USDA, College Station, TX 77845, USA
    J Dairy Sci 86:852-60. 2003
    ..Results indicate that switching cattle from grain to forage could potentially reduce EHEC populations in cattle prior to slaughter; however the economic impact of this needs to be examined...
  87. doi request reprint Evaluation of an experimental chlorate product as a preslaughter feed supplement to reduce salmonella in meat-producing birds
    J A Byrd
    United States Department of Agriculture Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, TX 77845, USA
    Poult Sci 87:1883-8. 2008
    ..5% ECP compared with the controls. These results indicate broilers supplemented with feed </= 5% ECP or water ECP 7 d before slaughter reduced ST without affecting growth parameters...
  88. ncbi request reprint The effect of an experimental chlorate product on Salmonella recovery of turkeys when administered prior to feed and water withdrawal
    R W Moore
    Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, United States Department of Agriculture, Agricultural Research Service, College Station, TX 77845, USA
    Poult Sci 85:2101-5. 2006
    ..These experiments suggest that the ECP significantly reduces Salmonella colonization in commercial turkeys when administered prior to feed and water withdrawal...
  89. pmc Investigation into the seasonal salmonellosis in lactating dairy cattle
    T S Edrington
    USDA ARS, Food and Feed Safety Research Unit, College Station, TX 77845, USA
    Epidemiol Infect 136:381-90. 2008
    ..During year 2 of the study, Salmonella was routinely cultured (although highly variable from month to month) from the cattle and the environment, although no outbreak of salmonellosis was observed...
  90. ncbi request reprint Fecal prevalence of Escherichia coli O157, Salmonella, Listeria, and Bacteriophage Infecting E. coli O157:H7 in feedlot cattle in the Southern Plains region of the United States
    T R Callaway
    Food and Feed Safety Research Unit, USDA ARS, College Station, Texas 77845, USA
    Foodborne Pathog Dis 3:234-44. 2006
    ..Our results indicate that such bacteriophage are widespread in feedlot cattle, suggesting that further research into the ecological role of bacteriophage in the gastrointestinal tract is needed...
  91. ncbi request reprint Effect of flavophospholipol on conjugation frequency between Escherichia coli donor and recipient pairs in vitro and in the chicken gastrointestinal tract
    T L Poole
    USDA ARS, Southern Plains Agricultural Research Center 2881 F and B Road, College Station, TX 77845, USA
    J Antimicrob Chemother 58:359-66. 2006
    ..To examine the ability of flavophospholipol to inhibit bacterial conjugation between Escherichia coli donor and recipient pairs in vitro and in day-of-hatch chickens...
  92. doi request reprint Fate of Escherichia coli O157:H7 and Salmonella from contaminated manure slurry applied to soil surrounding tall fescue
    M L Looper
    USDA ARS, Dale Bumpers Small Farms Research Center, Booneville, AR, USA
    Lett Appl Microbiol 48:513-6. 2009
    ..To investigate the potential transfer of Escherichia coli O157:H7 and Salmonella from contaminated manure slurry into the tissue of tall fescue plants...
  93. doi request reprint Characterization of bovine ruminal and equine cecal microbial populations enriched for enhanced nitro-toxin metabolizing activity
    Ying Zhang
    Tibetan Rangeland and Yak Research Institute, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou City 730020, China International Centre for Tibetan Plateau Ecosystem Management, Lanzhou University, Lanzhou City 730020, China United States Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, TX 77845, USA
    Anaerobe 26:7-13. 2014
    ....
  94. doi request reprint Foodborne Salmonella ecology in the avian gastrointestinal tract
    K D Dunkley
    Department of Poultry Science, Texas A and M University, College Station, 77843 2472, USA
    Anaerobe 15:26-35. 2009
    ..A clear understanding of the key factors involved in Salmonella colonization in the avian GI tract has the potential to lead to better approach for more effective control of this foodborne pathogen...
  95. ncbi request reprint Effects of short-chain nitrocompounds against Campylobacter jejuni and Campylobacter coli in vitro
    S M Horrocks
    U S Dept of Agriculture, Agricultural Research Service, Food and Feed Safety Research Unit, College Station, TX 77845, USA
    J Food Sci 72:M50-5. 2007
    ..05) in suspensions with added 2-nitro-l-propanol than in unsupplemented or nitroethane-supplemented suspensions, thus reiterating the superior inhibitory effect of 2-nitro-l-propanol...
  96. ncbi request reprint Colicin concentrations inhibit growth of Escherichia coli O157:H7 in vitro
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, Agricultural Research Service, U S Department of Agriculture, College Station, Texas 77845, USA
    J Food Prot 67:2603-7. 2004
    ..05) populations of E. coli O157:H7 at concentrations <0.1 microg/ml. These potent antimicrobial proteins may potentially provide an effective and environmentally sound preharvest strategy to reduce E. coli O157:H7 in food animals...
  97. ncbi request reprint Effect of sodium chlorate on Salmonella typhimurium concentrations in the weaned pig gut
    R C Anderson
    US Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, Food and Feed Safety Research Unit, College Station, Texas 77845, USA
    J Food Prot 64:255-8. 2001
    ..An observed treatment by time after treatment interaction suggests the chlorate effect was concentration dependent. Chlorate treatment may provide a means to reduce foodborne pathogens immediately before harvest...
  98. ncbi request reprint Ionophores: their use as ruminant growth promotants and impact on food safety
    T R Callaway
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, 2881 F and B Rd, Agricultural Research Service, USDA, College Station, TX 77845, USA
    Curr Issues Intest Microbiol 4:43-51. 2003
    ..Therefore it appears that ionophores will continue to play a significant role in improving the efficiency of animal production in the future...
  99. ncbi request reprint Fecal prevalence and diversity of Salmonella species in lactating dairy cattle in four states
    T R Callaway
    Food and Feed Safety Research Unit, USDA ARS, College Station, TX 77845, USA
    J Dairy Sci 88:3603-8. 2005
    ..From our data, it appears that subclinical colonization with Salmonella enterica is relatively common on dairy farms and is represented by diverse serotypes on US dairy farms...
  100. doi request reprint Influence of exogenous melatonin administration on Salmonella enteritidis colonization in molted layers
    D J Nisbet
    Food and Feed Safety Research Unit, Southern Plains Agricultural Research Center, USDA ARS, College Station, TX 77845, USA
    Poult Sci 87:1083-8. 2008
    ..Results from the current research suggest that dosage with high levels of melatonin may exacerbate Salmonella Enteritidis infection in layers subjected to forced molt...
  101. doi request reprint Evaluation of feeding glycerol on free-fatty acid production and fermentation kinetics of mixed ruminal microbes in vitro
    N A Krueger
    United States Department of Agriculture, Agriculture Research Service, Southern Plains Agriculture Research Center, Food and Feed Safety Research Unit, 2881 F and B Road, College Station, TX 77845, USA
    Bioresour Technol 101:8469-72. 2010
    ..These results suggest that inhibiting bacterial fat degradation may promote ruminal passage of total lipid, thereby providing greater proportions of beneficial unsaturated fat for incorporation into beef products...