Udder Health & Mastitis Scientific Posters

Evaluation of thermal imaging for detection of subclinical mastitis at the quarter level.

Salar, S., Dikmeoglu, E., Palavan Ozkan, D., Uzun, A., Simsek, S., Bastan, A.

A single measurement of udder skin surface temperature by a
thermal camera at the quarter level was not reliably diagnosing
subclinical mastitis compared to bacteriological culturing.
Maybe repeated measures of udder skin temperature in time
would increase sensitivity and specificity.

Negatively controlled, randomized clinical trial comparing 2-day intramammary use of amoxicillin to 5-day use of ceftiofur hydrochloride for treatment of bovine clinical mastitis caused by Gram-positive pathogens.

Tiago Tomazi, Ana Tomazi, Josiane Silva, Leonardo Bringhenti, Marjory Rodrigues, Jantijn Swinkels, Lowell Midla, Scott Nordstrom, Rodrigo Bicalho.

The 2-d protocol with 3 intramammary infusions of amoxicillin
(narrow-spectrum antimicrobial) had similar overall clinical and bacteriological cures as 5 administrations (once a day) with ceftiofur hydrochloride (wide spectrum) for the treatment of Gram-positive clinical mastitis. No significant difference was observed on CM recurrence and cow survival.

Randomized controlled field trial comparing quarter and cow level selective dry cow treatment using the California Mastitis Test.

Swinkels, J. M., K. A. Leach, J. E. Breen, B. Payne, V. White, M. J. Green and A. J. Bradley

On well-managed low SCC dairy farms, with a low prevalence of major pathogens and a predominant environmental mastitis etiology, selective dry off at quarter level using CMT could be a useful approach to further support reduction in antimicrobial use.

Field trial to compare efficacy of two commercially available Escherichia coli J-5 vaccines against clinical coliform mastitis

N.Stewart, S.Nordstrom, J.Champaign, J.Hogan, A.Hurwitch 

Cows receiving a Bovilis® J-5 vaccination regimen were 2.4 times less likely to have clinical coliform mastitis than cows receiving another commercially available vaccine.

Comparison of endotoxin concentrations among commercially available Gram-negative, lipopolysaccharide core-antigen vaccines used to control bovine mastitis.

N.Stewart, S.Nordstrom, J.Champaign, B.Markley, J.Hogan

Gram-negative, lipopolysaccharide core-antigen vaccines used to control bovine mastitis differed in endotoxin content with a difference greater than 13,000-fold in endotoxin units/ml between the lowest and highest concentrations. 

Comparison of physical properties of 6 different teat sealants on the US market

J.Swinkels, P. Boyer, J. Hayes, J. Roomey, J. Thiry

The 6 different brands of teat sealants varied substantially in their physical properties, which are related to convenience of application. To what extent application convenience influences the risk for new intramammary infection is not known and should be a focus of further research.

Efficacy of a new teat sealant alone or combined with an existing dry cow antibiotic in a selective dry cow therapy program.

Swinkels, J. M., A. Deterink, M. Holstege, A. Schmenger, G. D. Kempe, T. Bruggink, P. Penterman4, C. Schepenzeel, A. Velthuis and V. Kromker

Efficacy of a new teat sealant alone or combined with an existing dry cow antibiotic in a selective dry cow therapy program is in line with results found in other trials.

A Randomized Non-Inferiority Study Evaluating the Efficacy of Two Commercially Available Teat Sealants in Dairy Cows.

MP.Buckley, J.Bayne, GS.Silva, T.Tomazi, BE.Miller, S.Godden, PJ.Gorden

This study concludes that the new ITS (ShutOut) is not inferior to the original product (Orbeseal) at preventing new IMI during the dry period in dairy cattle. Additionally, no differences were detected between other quarter and cow-level parameters.

Farmer’s attitude, level of application and challenges to implement Selective Dry Cow Therapy on Spanish dairy farms.

Carbonell C., Charfeddine N., Marcos M., Elvira L.

Spanish dairy farms will have to switch from blanket to
selective dry cow therapy in a short time. This is a challenge
for both farmers and veterinarians. Successful early
adopters provide hope others can do it as well.