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Related Experiment Videos

Staphylococci isolated from healthy goats.

J Valle1, S Piriz, R de la Fuente

  • 1Unidad de Microbiología e Inmunología, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain.

Zentralblatt Fur Veterinarmedizin. Reihe B. Journal of Veterinary Medicine. Series B
|March 1, 1991
PubMed
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This study identified staphylococcal populations on healthy goats, finding coagulase-negative staphylococci prevalent on skin and nasal passages. Subclinical infections were detected in over a third of goats sampled, highlighting potential health concerns.

Area of Science:

  • Veterinary Microbiology
  • Animal Health
  • Bacteriology

Background:

  • Staphylococcal populations colonize various body sites in animals.
  • Understanding these populations is crucial for animal health and disease prevention.
  • Goats can harbor staphylococci on their skin, nasal mucosa, and in milk.

Purpose of the Study:

  • To characterize the staphylococcal species present on healthy goats.
  • To determine the prevalence of coagulase-positive and coagulase-negative staphylococci.
  • To investigate staphylococci associated with subclinical infections in goat milk.

Main Methods:

  • Isolation and characterization of Staphylococcus strains from skin, nasal mucosa, and milk of 133 goats.
  • Identification of species based on coagulase activity and novobiocin sensitivity.

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  • Microbiological analysis of milk samples to detect staphylococci indicative of infection.

    • Main Results:

    • 346 Staphylococcus strains were isolated; 21.4% were coagulase-positive (S. aureus, S. hyicus) and 78.6% were coagulase-negative.
    • Prevalent coagulase-negative species included S. haemolyticus (23.5%), S. warneri (16.5%), and S. epidermidis (11.8%).
    • Subclinical infection indicators were found in the milk of 35.3% of the goats.

    Conclusions:

    • Coagulase-negative staphylococci, particularly S. haemolyticus, S. warneri, and S. epidermidis, are dominant on goat skin.
    • A significant proportion of goats harbor staphylococci indicative of subclinical mastitis.
    • Further research is needed to understand the clinical implications of these findings.