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Byambajav Z, Bulgan E, Hirai Y, Nakayama M, Tanaka M, Nitta Y, Suzuki A, Umemura T, Altankhuu B, Tsagaan A, Vanaabaatar B, Janchivdorj E, Purevdorj NO, Ayushjav N, Yamasaki T, Horiuchi M. Research Note: Antimicrobial resistance of Campylobacter species isolated from chickens near Ulaanbaatar city, Mongolia. Poult Sci 2020; 100:100916. [PMID: 33518344 PMCID: PMC7936208 DOI: 10.1016/j.psj.2020.11.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 11/20/2020] [Accepted: 11/24/2020] [Indexed: 11/17/2022] Open
Abstract
There has been no report on the prevalence of Campylobacter spp. in farm animals in Mongolia. To uncover the prevalence of Campylobacter spp. in chickens in Mongolia and their antimicrobial resistance, in this study, we isolated and characterized Campylobacter spp. from chickens in Mongolia. We collected 71 cloacal swabs of chickens from 5 farms including 4 layer farms and one broiler farm near Ulaanbaatar city and isolated 25 Campylobacter jejuni and 6 Campylobacter coli isolates. All isolates were resistant to tetracycline, and 3 C. coli isolates were resistant to erythromycin. The C. coli isolates possessed either the erm(B) gene or nucleotide substitution at nt 2,075 of 23S rDNA, both of which are known to be associated with erythromycin resistance. Sixteen of the 31 C. jejuni/C. coli isolates (51.6%) were resistant to nalidixic acid and fluoroquinolones. All the fluoroquinolone-resistant isolates possessed amino acid substitution from threonine to isoleucine at codon 86 (nucleotide substitution: ACA to ATA). Multilocus sequence typing and phylogenetic analyses showed a variation in C. jejuni/C. coli in chickens in Mongolia. In addition, some of the C. jejuni isolates seemed to be phylogenetically close to isolates in Asian and Oceanian countries. This is the first report on the characterization of antimicrobial resistance of Campylobacter spp. in farm animals in Mongolia and is valuable for implementation of measures for a prudent use of antimicrobials in farm animals.
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Affiliation(s)
- Zolzaya Byambajav
- Ulaanbaatar Veterinary Department, Laboratory of Veterinary Sanitation and Hygiene, Ulaanbaatar 16050, Mongolia; Ulaanbaatar Veterinary Department, Laboratory of Diagnostic and Surveillance, Ulaanbaatar 16050, Mongolia
| | - Erdenebat Bulgan
- Ulaanbaatar Veterinary Department, Laboratory of Veterinary Sanitation and Hygiene, Ulaanbaatar 16050, Mongolia; Ulaanbaatar Veterinary Department, Laboratory of Diagnostic and Surveillance, Ulaanbaatar 16050, Mongolia
| | - Yuji Hirai
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan
| | - Momoko Nakayama
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan
| | - Misaki Tanaka
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan
| | - Yurika Nitta
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan
| | - Akio Suzuki
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan
| | - Takashi Umemura
- Project Office of Japan International Cooperation Agency, Mongolian University of Life Science, Ulaanbaatar 17024, Mongolia
| | - Bold Altankhuu
- Laboratory of Infectious Disease and Immunology, Institute of Veterinary Medicine, Mongolian University of Life Science, Ulaanbaatar 11000, Mongolia
| | - Alimaa Tsagaan
- Laboratory of Infectious Disease and Immunology, Institute of Veterinary Medicine, Mongolian University of Life Science, Ulaanbaatar 11000, Mongolia
| | - Batbaatar Vanaabaatar
- Laboratory of Infectious Disease and Immunology, Institute of Veterinary Medicine, Mongolian University of Life Science, Ulaanbaatar 11000, Mongolia
| | - Erdenebaatar Janchivdorj
- Laboratory of Infectious Disease and Immunology, Institute of Veterinary Medicine, Mongolian University of Life Science, Ulaanbaatar 11000, Mongolia
| | - Nyam-Osor Purevdorj
- School of Veterinary Medicine, Mongolian University of Life Science, Ulaanbaatar 17024, Mongolia
| | - Narantuya Ayushjav
- Ulaanbaatar Veterinary Department, Laboratory of Veterinary Sanitation and Hygiene, Ulaanbaatar 16050, Mongolia; Ulaanbaatar Veterinary Department, Laboratory of Diagnostic and Surveillance, Ulaanbaatar 16050, Mongolia
| | - Takeshi Yamasaki
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan
| | - Motohiro Horiuchi
- Laboratory of Veterinary Hygiene, Faculty of Veterinary Medicine, Graduate School of Infectious Diseases, Hokkaido University, Sapporo 060-0818 Japan; Global Station for Zoonosis Control, Global Institute for Collaborative Research and Education, Hokkaido University, Sapporo 001-0020, Japan.
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