title: Evaluation of linear dodecyl benzene sulfonic acid teat dip under experimental challenge.
abstract: Linear dodecyl benzene sulfonic acid at 1.94% was evaluated as a teat dip in two experimental challenge trials. Each trial was 4 wk, and a half udder design was used. In the first trial the product reduced incidence of intramammary infection with Staphylococcus aureus (ATCC 29740) by 82.5%. Incidence of infection with Streptococcus agalactiae (ATCC 27956) was reduced nonsignificantly 19.5%. Ineffectiveness was attributed to challenge with Streptococcus agalactiae at concentrations higher than previously used. In a second trial of only Streptococcus agalactiae, infections were reduced 56.9%; concentrations of challenge suspensions were those routinely used.
mesh_terms: D000287:Administration, Topical; D000818:Animals; D001557:Benzenesulfonates / Q000008:administration & dosage / Q000494:pharmacology*; D002417:Cattle; D004202:Disinfectants / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D008321:Mammary Glands, Animal / Q000382:microbiology*; D008414:Mastitis, Bovine / Q000517:prevention & control*; D013211:Staphylococcus aureus / Q000187:drug effects; D013292:Streptococcus agalactiae / Q000187:drug effects
chemical_list: D001557:Benzenesulfonates; D004202:Disinfectants; C001114:dodecylbenzenesulfonic acid