title: Efficacies of chlorine dioxide and lodophor teat dips during experimental challenge with Staphylococcus aureus and Streptococcus agalactiae.
abstract: We tested two postmilking teat dips for efficacy against Staphylococcus aureus and Streptococcus agalactiae using experimental challenge procedures recommended by the National Mastitis Council. The chlorine dioxide teat dip that contained 0.7% sodium chlorite reduced the number of new intramammary infections (IMI) caused by Staph. aureus by 86.6% and reduced new IMI caused by Strep. agalactiae by 88.4%. The 0.5% iodophor teat dip reduced the number of new IMI caused by Staph. aureus by 92.9% and reduced the number of new IMI caused by Strep. agalactiae by 43.4%. Teat skin and teat end conditions were evaluated before and after the study, and no deleterious effects were noted among dipped quarters compared with undipped control quarters for either teat dip.
authors.affiliation: Mastitis Research Laboratory, Hill Farm Research Station, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Homer 71040, USA. rboddie@agctr.lsu.edu
authors.forename: R L
authors.initials: RL
authors.lastname: Boddie
authors.forename: S C
authors.initials: SC
authors.lastname: Nickerson
authors.forename: R W
authors.initials: RW
authors.lastname: Adkinson
mesh_terms: D000818:Animals; D002417:Cattle; D017606:Chlorine Compounds / Q000494:pharmacology*; D015169:Colony Count, Microbial; D004202:Disinfectants / Q000494:pharmacology; D005260:Female; D007466:Iodophors / Q000494:pharmacology*; D008321:Mammary Glands, Animal / Q000382:microbiology*; D010087:Oxides / Q000494:pharmacology*; D013211:Staphylococcus aureus / Q000187:drug effects*; D013292:Streptococcus agalactiae / Q000187:drug effects*; D016896:Treatment Outcome
chemical_list: D017606:Chlorine Compounds; D004202:Disinfectants; D007466:Iodophors; D010087:Oxides; C025109:chlorine dioxide