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New infection rate of bovine mammary glands after application of an internal teat seal at dry-off

  • Volker Krömker (a1), Nils Th. Grabowski (a2) and Julia Friedrich (a1)

The internal teat sealant OrbeSeal® (Zoetis, Berlin, Germany) is intended to prevent new intramammary infection (IMI) throughout the dry period. The aim of this field study was to determine new infection rates in udder quarters applied exclusively with the sealant at dry-off and untreated ones (control group). For that, the new infection rate of udder quarters treated with the sealant was evaluated in a split-udder design (front right and rear left udder quarters treated, the other ones untreated) in 128 cows from nine dairy farms in North Germany that were healthy in all four udder quarters (i.e. <100 000 cells/ml, bacteriologically negative). After calving, duplicate quarter milk samples were collected twice at DIM (days in milk) 5–12 and 7 d later for culture. The new infection rates for treated and untreated groups were 3·4 and 10·5%, respectively. The results showed that applying a standardised study design with very few confounders under field conditions, using internal teat sealants reduced the new infection rate on quarter level to a third of that of the control group. Thus, internal teat sealants represent a viable option for dry-off treatment of udder-healthy cows.

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AJ Bradley & MJ Green 2001 An investigation of the impact of intramammary antibiotic dry cow therapy on clinical coliform mastitis. Journal of Dairy Science 84 16321639

T Halasa , O Østerås , H Hogeveen , T van Werven & M Nielen 2009 Meta-analysis of dry cow management for dairy cattle, part 1: protection against new intramammary infections. Journal of Dairy Science 92 31343149

JN Huxley , MJ Green , LE Green & AJ Bradley 2002 Evaluation of the efficacy of an internal teat sealer during the dry period. Journal of Dairy Science 85 551561

TJ Lam , MC DeJong , YH Schukken & A Brand 1996 Mathematical modeling to estimate efficacy of postmilking teat disinfection in split-udder trials of dairy cows. Journal of Dairy Science 79 6270

KR Petrovski , A Caicedo-Caldas , NB Williamson , N Lopez-Villalobos , A Grinberg , TJ Parkinson , IG Tucker 2011 Efficacy of a novel internal dry period teat sealant containing 0·5% chlorhexidine against experimental challenge with Streptococcus uberis in dairy cattle. Journal of Dairy Science 94 33663375

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Journal of Dairy Research
  • ISSN: 0022-0299
  • EISSN: 1469-7629
  • URL: /core/journals/journal-of-dairy-research
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