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Winter evaluation of a postmilking powdered teat dip
J J Goldberg1, P A Murdough, A B Howard
1Department of Animal and Food Sciences, University of Vermont, Burlington 05405.
Journal of Dairy Science
|March 1, 1994
Summary
This study evaluated a powdered teat dip for dairy cows during winter. While it improved teat condition, it was less effective against mastitis pathogens compared to a standard iodine dip.
Area of Science:
- Veterinary Microbiology
- Dairy Science
- Animal Husbandry
Background:
- Mastitis remains a significant concern in dairy herds, impacting animal welfare and economic viability.
- Effective teat hygiene protocols are crucial for controlling mastitis, especially during challenging winter conditions.
- Novel teat dip formulations are continuously explored to balance efficacy and teat conditioning.
Purpose of the Study:
- To assess the bacteriological efficacy of a novel powdered teat dip against common mastitis pathogens.
- To evaluate the teat conditioning properties of the powdered teat dip during winter months.
- To compare the performance of the powdered teat dip against a positive control (1% iodine plus 10% glycerin).
Main Methods:
- A 3-month natural exposure field trial involving 509 lactating cows (primiparous and multiparous).
- Bacteriological sampling and teat end condition assessments were conducted.
- Comparison of a powdered teat dip against a 1% iodine and 10% glycerin teat dip.
Main Results:
- The powdered teat dip showed equivalent efficacy against most mastitis pathogens in primiparous cows, but not coagulase-negative staphylococci.
- In multiparous cows, efficacy was equivalent against environmental pathogens but not Staphylococcus aureus or coagulase-negative staphylococci.
- The positive control (iodine-glycerin) demonstrated superior efficacy against key mastitis pathogens in both cow groups.
- Improved teat end condition was observed in both primiparous and multiparous cows with the powdered dip, though more pronounced in primiparous cows.
Conclusions:
- The powdered teat dip's germicidal activity was insufficient to prevent new intramammary infections (IMIs) from contagious or minor pathogens.
- While offering improved teat conditioning, the powdered dip's bacteriological efficacy was inferior to the iodine-based control.
- Further research may be needed to enhance the antimicrobial properties of powdered teat dips for comprehensive mastitis control.