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Journal of Dairy Science Vol. 73 No. 8 2121-2128
© 1990 by American Dairy Science Association ®
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Evaluation of a Chlorous Experimental and Natural Acid-Chlorine Dioxide Teat Dip Under Experimental and Natural Exposure Conditions

P. A. Drechsler 1, E. E. Wildman 1, and J. W. Pankey 1

1 Department of Animal Sciences, University of Vermont, Burlington 05405

A postmilking teat dip containing chlorous acid-chlorine dioxide was evaluated by experimental challenge and in two herds under natural exposure. The test product had an efficacy of 78.9% against Staphylococcus aureus and 52.5% against Streptococcus agalactiae in the experimental challenge trial. The product was compared with a 1% iodine product in a 15-mo natural exposure study. Postdipping with chlorous acid-chlorine dioxide reduced incidence of udder infection by major mastitis pathogens 36.1% when data were combined from the two herds. The 1% iodine and the chlorous acid-chlorine dioxide products were not equivalent for major mastitis pathogens; the test product was more effective. Incidence of udder infection by environmental mastitis pathogens was reduced 36.8% in both herds combined. Efficacy of the two teat dips was equivalent for environmental pathogens.

Key Words: bovine mastitis • chlorous acidchlorine dioxide • postmilking teat dip

Submitted on October 13, 1989
Accepted on January 29, 1990




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J. E. Hillerton, J. Cooper, and J. Morelli
Preventing Bovine Mastitis by a Postmilking Teat Disinfectant Containing Acidified Sodium Chlorite
J Dairy Sci, March 1, 2007; 90(3): 1201 - 1208.
[Abstract] [Full Text] [PDF]


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