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Coliform mastitis.

R J Eberhart

    The Veterinary Clinics of North America. Large Animal Practice
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Coliform bacteria cause udder infections in dairy cows, but most cases resolve without treatment. A barrier teat dip and improved hygiene for dry cows show promise in reducing infections.

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    Area of Science:

    • Veterinary Medicine
    • Bacteriology
    • Dairy Science

    Background:

    • Coliform bacteria, including E. coli, Klebsiella, and Enterobacter, are common causes of mastitis in dairy cows.
    • While many coliform mastitis cases are self-limiting, chronic infections can occur, leading to recurrent clinical episodes.
    • Current control methods like germicidal teat dips and dry cow therapy are often ineffective against coliforms.

    Purpose of the Study:

    • To evaluate the effectiveness of novel control strategies for coliform mastitis in dairy cows.
    • To identify key reservoirs and transmission routes of coliform bacteria in dairy environments.
    • To provide recommendations for reducing coliform infection rates in lactating and dry dairy cows.

    Main Methods:

    • Assessed the efficacy of a barrier film teat dip in reducing coliform infections in lactating cows.

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  • Investigated the role of bedding materials, particularly sawdust, as a reservoir for coliform bacteria.
  • Examined the impact of hygiene practices, including premilking procedures and clean conditions for dry/calving cows, on infection rates.

    • Main Results:

    • A teat dip providing a barrier film demonstrated promising results in decreasing coliform infections in lactating cows.
    • Sawdust bedding was identified as a significant reservoir for coliforms, especially Klebsiella species.
    • Conventional control methods were found to be largely ineffective due to the nature of coliform bacteria.

    Conclusions:

    • A barrier film teat dip offers a potential improvement over germicidal dips for controlling coliform mastitis.
    • Effective coliform mastitis control requires addressing environmental reservoirs like bedding and implementing stringent hygiene protocols.
    • Avoiding sawdust bedding for dry and calving cows and maintaining clean calving areas are crucial for reducing infection pressure.