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Antibiotic resistance in microorganisms isolated in a bull semen stud
- Source :
- Reproduction in domestic animals = ZuchthygieneREFERENCES. 55(3)
- Publication Year :
- 2019
-
Abstract
- Many microorganisms from various sources may be present in ejaculates of bulls. This study identified and isolated bacteria from bull sperm samples in a commercial stud and evaluated their resistance to antibiotics. The number of colony-forming units was determined in semen samples collected at distinct steps during freezing and thawing. The minimum inhibitory concentration and the minimum bactericidal concentration were determined for four antibiotics commonly used in commercial studs. A total of 135 microorganisms from 25 genera were isolated. After a sensitivity test, all evaluated microorganisms (n = 55) were resistant to penicillin and most of them were resistant to tylosin and lincomycin (n = 54). Resistance to all tested antibiotics was observed in 22% of all isolates, whereas only 3.9% of the isolates were inhibited by the tested antibiotics at the concentrations recommended by the international legislation. As the isolated microorganisms presented high resistance to frequently used antibiotics, sensitivity tests should be periodically conducted in commercial bull semen studs to prevent the use of contaminated semen in artificial insemination.
- Subjects :
- Male
endocrine system
Veterinary medicine
medicine.drug_class
Antibiotics
Tylosin
Biology
03 medical and health sciences
chemistry.chemical_compound
Minimum inhibitory concentration
fluids and secretions
0302 clinical medicine
Endocrinology
Antibiotic resistance
Semen
medicine
Animals
Cryopreservation
030219 obstetrics & reproductive medicine
Minimum bactericidal concentration
Bacteria
urogenital system
0402 animal and dairy science
Drug Resistance, Microbial
04 agricultural and veterinary sciences
Antimicrobial
040201 dairy & animal science
Lincomycin
Anti-Bacterial Agents
Penicillin
chemistry
Animal Science and Zoology
Cattle
Brazil
Biotechnology
medicine.drug
Semen Preservation
Subjects
Details
- ISSN :
- 14390531
- Volume :
- 55
- Issue :
- 3
- Database :
- OpenAIRE
- Journal :
- Reproduction in domestic animals = ZuchthygieneREFERENCES
- Accession number :
- edsair.doi.dedup.....0f5b7d45c03e6f882569f7848a6bc53a