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Related Experiment Videos

Mastitis therapy for cows elevated somatic cell counts or clinical mastitis.

L L Timms, L H Schultz

    Journal of Dairy Science
    |February 1, 1984
    PubMed
    Summary

    Intramammary antibiotic treatment showed low cure rates for clinical mastitis in cows. High somatic cell count cases saw no significant cell count decrease, indicating limited effectiveness for this common dairy cattle infection.

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    Area of Science:

    • Veterinary Medicine
    • Animal Health
    • Dairy Science

    Background:

    • Mastitis is a significant concern in dairy herds, impacting animal welfare and economic viability.
    • Somatic cell count (SCC) and clinical signs are key indicators of intramammary infections.
    • Broad-spectrum antibiotics are commonly used for treatment, but efficacy varies.

    Purpose of the Study:

    • To evaluate the efficacy of intramammary antibiotic treatment for dairy cows.
    • To assess treatment outcomes based on initial presentation: high somatic cell count versus clinical mastitis.
    • To determine bacteriological cure rates, economic costs, and reinfection rates.

    Main Methods:

    • Intramammary broad-spectrum antibiotic treatment was administered to cows.
    • Two groups were studied: those treated after a single high monthly SCC and those treated for clinical mastitis.

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  • Bacteriological cultures, SCC, and milk production were monitored pre- and post-treatment.

    • Main Results:

    • No significant SCC decrease was observed in the high SCC group post-treatment.
    • Bacteriological cure rates were low in both groups (23.3% and 21.6% for major/minor pathogens).
    • Clinical mastitis cases showed decreased SCC and near-normal production post-treatment, but 37% reinfection occurred.

    Conclusions:

    • Intramammary antibiotic treatment demonstrated limited efficacy for high SCC and clinical mastitis in dairy cows.
    • Minor pathogens like micrococci and coagulase-negative staphylococci were common, alongside major pathogens (Streptococcus uberis, coliforms).
    • High reinfection rates and low cure rates suggest challenges in managing mastitis effectively with this treatment approach.