Are some teat disinfectant formulations more effective against specific bacteria isolated on teat skin than others?

Sarah Rose Fitzpatrick, Mary Garvey, Jim Flynn, Kieran Jordan, David Gleeson

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The use of pre- A nd post-milking teat disinfectants can reduce teat bacterial load and aid in the collection of high-quality milk. The objective of this study was to compare the reduction in bacteria populations on teat skin after the application of different commercial teat disinfectant products. Ten teat disinfectant products were applied to the teats of 10 Holstein-Friesian cows. One cow received one teat disinfectant product at each sampling point before cluster application for milking. A composite swab sample was taken of the 4 teats of each cow before and after teat disinfectant application. Swab samples were placed on three different selective agars to enumerate bacterial counts of staphylococcal, streptococcal and coliforms isolates on teat skin. Staphylococcal isolates were the most prominent bacterial group recovered on teat swabs (49%), followed by streptococcal (36%) and coliform (15%) isolates before the application of disinfectant. The average bacterial reductions on teat skin were shown to be 76%, 73% and 60% for staphylococcal, streptococcal and coliform isolates, respectively. All of the teat disinfectant products tested reduced teat bacterial load for all three bacterial groups. Product 4 containing 0.6% w/w diamine was the most effective against bacterial populations of staphylococcal and streptococcal isolates on teat skin with a reduction of 90% and 94%, respectively. Whereas product 10, which contained 0.5% w/w iodine, resulted in the highest reduction in coliforms on teat skin with a reduction of 91%. Results from this study suggest that specific bacterial population loads on teats can be reduced using different teat disinfectant formulations.

Original languageEnglish
Article number21
JournalActa Veterinaria Scandinavica
Volume61
Issue number1
DOIs
Publication statusPublished - 25 Apr 2019

Keywords

  • Dairy cows
  • Dairy hygiene
  • Swabs
  • Teat bacterial load
  • Teat disinfection

Fingerprint

Dive into the research topics of 'Are some teat disinfectant formulations more effective against specific bacteria isolated on teat skin than others?'. Together they form a unique fingerprint.

Cite this