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Staphylococcus borealis causing subclinical mastitis in dromedary camels.

Rakesh Ranjan1, Aruna Kuniyal2, Amita Ranjan3

  • 1ICAR-National Research Centre on Camel, Bikaner, 334001, Rajasthan, India. rakesh_ranjan3@rediffmail.com.

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Summary

This study identifies Staphylococcus borealis as a cause of subclinical mastitis in dromedary camels, a finding previously undocumented in this species. This research highlights a new udder pathogen for camel health management.

Keywords:
Staphylococcus borealisCamelCoagulase negative staphylococci (CNS)Mastitis

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Area of Science:

  • Veterinary Microbiology
  • Animal Infectious Diseases

Background:

  • Coagulase-negative Staphylococci (CNS) are increasingly implicated in dairy cattle udder infections.
  • Research on CNS mastitis in dromedary camels remains limited, despite potential economic impact.

Purpose of the Study:

  • To report the first instance of subclinical mastitis caused by Staphylococcus borealis in dromedary camels.
  • To characterize the Staphylococcus borealis isolate from a camel and assess its antibiotic sensitivity.

Main Methods:

  • Identification of the causative agent using morphological and biochemical tests, MALDI-TOF MS, and 16s rRNA sequencing with BLAST analysis.
  • Phylogenetic analysis of the Staphylococcus borealis isolate.
  • Antibiotic sensitivity testing of the isolated bacterium.

Main Results:

  • Subclinical mastitis in two dromedary camels was attributed to Staphylococcus borealis.
  • The camel isolate exhibited distinct biochemical reactions compared to bovine and human strains.
  • The Staphylococcus borealis isolate demonstrated high sensitivity to a range of antibiotics.

Conclusions:

  • Staphylococcus borealis is identified as a novel cause of subclinical mastitis in dromedary camels.
  • The unique biochemical profile of the camel isolate warrants further investigation.
  • High antibiotic sensitivity may be linked to reduced antibiotic usage in camel treatment protocols.