Journal of
Veterinary Medicine and Animal Health

  • Abbreviation: J. Vet. Med. Anim. Health
  • Language: English
  • ISSN: 2141-2529
  • DOI: 10.5897/JVMAH
  • Start Year: 2009
  • Published Articles: 328

Full Length Research Paper

Aerobic and anaerobic bacterial isolates from the respiratory tract of sheep slaughtered at Addis Ababa Abattoirs Enterprises, Central Ethiopia

Addisu Awukew Yegoraw
  • Addisu Awukew Yegoraw
  • School of Veterinary Medicine, Wolaita Sodo University, Wolaita, Ethiopia.
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Addis Kassahun Gebremeskel
  • Addis Kassahun Gebremeskel
  • School of Veterinary Medicine, Hawassa University, Hawassa, Ethiopia.
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Tesfaye Sisay Tesema
  • Tesfaye Sisay Tesema
  • Unit of Health Biotechnology, Institute of Biotechnology, College of Natural and Computational Sciences, Addis Ababa University, Ethiopia.
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Biruk Tesfaye Birhanu
  • Biruk Tesfaye Birhanu
  • College of Veterinary Medicine and Agriculture, Addis Ababa University, Debrezeit, Ethiopia.
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  •  Received: 16 March 2017
  •  Accepted: 25 July 2017
  •  Published: 31 October 2017


The present study was an endeavor to isolate and identify the various bacteria localizing pneumonic lungs and the associated tracheas of sheep slaughtered at Addis Ababa Abattoirs Enterprise, Central Ethiopia, in both aerobic and anaerobic conditions. A total of 60 pneumonic lungs and 60 tracheal swabs were examined bacteriologically. From all the samples collected, a total of 440 bacterial isolates (239 from the aerobic culture and 201 from the anaerobic culture) were obtained. The result of aerobic isolates include: Staphylococcus species (31.38%), Pasteurella hemolytica (29.71%), Bacillus species (10.04%), Bibersteinia trehalosi (6.69%), Micrococcus (3.77%), Escherichia coli (3.35%), Streptococcus species (2.51%), Rhodococcus equi (2.93%), Pseudomonas species (2.09%), Klebsiella pnuemonea (0.84%), Actinobacillus species and Bordetella species (1, 29%); whereas Staphylococcus species  (26.87%), P. hemolytica (37.81%), Bacillus species (3.98%), B. trehalosi (10.45%), Micrococcus (3.48), E. coli (6.97%), Streptococcus species (0.5%), Rhodococcus equi (0.5%), Klebsiella pneumoniae (2.99%) and Actinobacillus species (1.49%) were among anaerobic isolates. Thus, isolation of multiple bacterial species from the respiratory tracts of pneumonic sheep in this study signifies their possible role in the involvement of respiratory diseases. Appropriate prevention and control methods should be established along with identification of the most pathogenic species by future studies.

Key words: Bacteria, lung, pneumonia, sheep, trachea.