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Article: Short Communication: Efficacy of Parenteral Ceftiofur for Treatment of Systemically Mild Clinical Mastitis in Dairy Cattle
- Article from:
- Journal of Dairy Science
- Article date:
- October 1, 2005
- Author:
CopyrightCopyright American Dairy Science Association Oct 2005. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
The objective of this study was to evaluate the effect of intramuscular (i.m.) ceftiofur (2.2 mg/kg) on important outcomes of systemically mild clinical mastitis episodes in lactating dairy cattle. Cows with clinical mastitis were randomly assigned to a treatment group: pirlimycin intramammary (i.m.m.) (n = 35), pirlimycin i.m.m. and ceftiofur i.m.m. (n = 36), cephapirin i.m.m. (n = 40), cephapirin i.m. and ceftiofur i.m. (n = 33). Sixty-nine, 22, and 9% of initial cultures were gram-negative, gram-positive, and mixed, respectively. Logistic regression analysis showed no significant associations between treatment groups and loss of quarter, recurrence, or culling. Mixed infections, ...