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Title:   Author  item
                                            Callaway, Todditem
                                            Edrington, Thomasitem
                                            Genovese, Kenneth

                                                         - *Ken*item
                                            Keen, Jamesitem
                                            Anderson, Robinitem
                                            BRABBAN, A - EVERGREEN STATE COLLEGEitem
                                            KUTTER, E - EVERGREEN STATE COLLEGEitem
                                            Schultz, Carrieitem
                                            Poole, Toniitem
                                            Nisbet, David
  Submitted to: Society for General Microbiology
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 1/8/2005
                                    Publication  Date: 4/4/2005
                                    Citation: Callaway, T.R., Edrington, T.S., Genovese, K.J., Keen, J.E., Anderson, R.C., Brabban, A.D., Kutter, E., Schultz, C.L., Poole, T.L., Nisbet, D.J. 2005. How common are bacteriophage in feces of U.S. feedlot cattle [abstract]? Society for General Microbiology. p. 61.Interpretive Summary:
                                Technical Abstract: Escherichia coli O157:H7 is a food-borne pathogen of critical importance that often colonizes cattle.  E. coli O157:H7 can be specifically killed by bacteriophage (bacterial viruses); and bacteriophage treatment has been suggested as a pre-harvest intervention strategy to reduce food-borne pathogens in cattle.  No systematic approach to determine the incidence of anti-E. coli O157:H7 phage (AO157P) has been previously performed.  Therefore the current study was designed to determine 1) the incidence of E. coli O157:H7 and Salmonella and 2) the incidence of AO157P in the feces of feedlot steers in commercial feedlots in the United States.  Fecal samples (n = 60) were collected from four feedlots in two Southern Great Plains states (total n = 240 fecal samples).  Salmonella and E. coli O157:H7 were found in 3.8% and 11.7% of the fecal samples, respectively.  AO157P were found in 15% of the fecal samples.  AO157P were present in all four feedlots and were found in 55% of the cattle pens.  Our results indicate that anti-E. coli O157:H7 is very widespread in feedlot cattle, indicating that further research into the ecological role of bacteriophage in the gastrointestinal tract is needed.


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