Effect of 2 different premilking teat sanitation routines on reduction of bacterial counts on teat skin of cows on commercial dairy farms

Journal of Dairy Science
C BaumbergerP L Ruegg

Abstract

Premilking teat sanitation reduces the load of bacteria on teat skin before milking and it is a fundamental practice used to ensure collection of high-quality milk. The objective of this study was to compare reduction in bacterial populations of teat skin after premilking preparation using either predipping with 0.5% iodine followed by drying (conventional; CONV) or using a semiautomated teat scrubber that uses chlorine dioxide (TS; FutureCow, Longwood, FL). Ten farms currently using a commercial teat scrubber system were enrolled. Cows (n=40 per farm) were assigned to CONV (n=198) or TS (n=196) premilking udder preparation. Teat skin swabs were collected before and after udder preparation and analyzed for total bacterial count (TBC), Streptococcus spp., Staphylococcus spp., and gram-negative bacteria (GNB). Reduction (RED) of each bacterial group was defined as the difference in the number of bacteria measured before and after udder preparation. Before udder preparation, Staphylococcus spp. (15,036 cfu/mL) and Streptococcus spp. (12,621 cfu/mL) were the most numerous microflora. Gram-negative bacteria were less numerous (1,538 cfu/mL). A significant treatment by farm interaction was identified for RED of all bacterial counts. ...Continue Reading

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Citations

Jan 13, 2015·International Journal of Food Microbiology·Conor J DoylePaul D Cotter
Apr 16, 2019·Biometrical Journal. Biometrische Zeitschrift·Luca Scrucca
Apr 27, 2019·Acta Veterinaria Scandinavica·Sarah Rose FitzpatrickDavid Gleeson
Sep 18, 2020·Animals : an Open Access Journal From MDPI·Maria-Franziska HohmannVolker Krömker
May 2, 2018·Irish Veterinary Journal·David GleesonBernadette O' Brien
Jan 4, 2021·Irish Veterinary Journal·Sarah Rose FitzpatrickDavid Gleeson

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