Comparison of J-5 Vaccinates and Controls for Clinical Severity, Milk Production Change, Etiologic Agent, and Survival in the Herd Following Naturally Occurring Cases of Clinical Mastitis

Authors

  • D. J. Wilson Cornell University, Ithaca, NY
  • B. A. Mallard University of Guelph, Guelph, Ontario, CANADA
  • J. L. Burton Michigan State University, East Lansing, MI
  • Y. T. Grohn Cornell University, Ithaca, NY
  • K. A. Schat Cornell University, Ithaca, NY
  • Y. H. Schukken Cornell University, Ithaca, NY

DOI:

https://doi.org/10.21423/aabppro20044940

Keywords:

clinical mastitis, J-5 vaccinates, controls, milk production

Abstract

Naturally occurring cases of clinical mastitis (CM) were studied among J-5 vaccinates or controls on three commercial dairy farms. Measures of clinical severity, milk production change and survival in the herd were evaluated for differences between the two groups. Particularly the study looked at protection against being culled with mastitis as the primary reason, including time-to-event analysis.

Cover image of the 37th Conference Proceedings: Cattle in pens that stretch to the horizon. Yellow background.

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Published

2004-09-23

Issue

2004

Section

Research Summaries - Dairy I

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