Clinical trials of udder and teat disinfection compounds

The efficacy and possible adverse reactions of P3-Oxy-Foam (Henkel-Ecolab C ompany, Vienna) for udder disinfection and Blu-Gard, containing 1.94% dodec yl benzene sulphuric acid, for tear dipping were examined over a 4 month pe riod in a clinical trial. One trial involved 112 cows, of which half were s ubjected to teat dipping with Blu-Gard for 3 months with the other 56 cows acting as controls. Iii a second trial, involving 113 cows, 57 were treated with a combination of P3 Oxy-Foam and Blu-Gard. The outcome of these treat ments was assessed by the clinical examination of the udders, the bacteriol ogical examination of quarter milk samples and the somatic cell counts of m ilk samples over a 14 day period. The results indicated that new infections caused by S. aureus were, to some extent, prevented in both, groups by the two treatments administered separately or together: No skin irritations or other adverse reactions were observed.