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Al Sattar A, Chisty NN, Irin N, Uddin MH, Hasib FMY, Hoque MA. Knowledge and practice of antimicrobial usage and resistance among poultry farmers: A systematic review, meta-analysis, and meta-regression. Vet Res Commun 2023; 47:1047-1066. [PMID: 36823483 DOI: 10.1007/s11259-023-10082-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 02/11/2023] [Indexed: 02/25/2023]
Abstract
A systematic review was conducted to summarize and synthesize the existing research on poultry farmers' knowledge, practices, and awareness regarding antimicrobial use (AMU) and antimicrobial resistance (AMR). It was undertaken by systematically searching databases, screening and characterizing relevant studies, extracting data, and evaluating the risk of bias. The outcomes were stratified into several subgroups, and pooled prevalence of each subgroup was calculated using a random-effect meta-analysis. Meta-regression was used for selected outcomes to further investigate the potential sources of heterogeneity across studies. Poultry farmers had knowledge and practice gaps on antimicrobial use. While most (65%; 95% CI: 50%-80%) used antimicrobials on poultry for therapeutic purposes, a portion used them to prevent disease (45%; 95% CI: 34%-55%) or boost growth (29%; 95% CI: 13%-46%) and productivity (20%; 95% CI: 6%-34%). 60% (95% CI: 50%-69%) of farmers approached veterinarians for antimicrobial advice, although many consulted drug sellers and fellow farmers. Insufficient antimicrobial residue knowledge (45%; 95% CI: 29%-62%), as well as inadequate awareness and faulty practice on withdrawal periods, were identified. Only 43% (95% CI: 34%-53%) were knowledgeable about AMR. Around half of farmers understood AMR's impacts on poultry, human health, and the environment. Meta-regression demonstrated that the source of heterogeneity for therapeutic antimicrobial use was the type of poultry farmers sampled and their educational qualifications; geographical region was significantly associated with antimicrobial usage based on farmers' experience; and the country's economic state was correlated with farmers' understanding of antimicrobial residue. This study recommends implementing legislation for judicious antimicrobial use, and farmer awareness campaigns to reinforce knowledge about prudent AMU and AMR.
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Affiliation(s)
- Abdullah Al Sattar
- Department of Medicine and Surgery, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram, 4225, Bangladesh
| | - Nurun Nahar Chisty
- Department of Medicine and Surgery, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram, 4225, Bangladesh
| | - Nusrat Irin
- Department of Medicine and Surgery, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram, 4225, Bangladesh
| | - Md Helal Uddin
- Department of Medicine and Surgery, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram, 4225, Bangladesh
| | - F M Yasir Hasib
- Department of Infectious Diseases and Public Health, City University of Hong Kong, Kowloon Tong, Hong Kong
| | - Md Ahasanul Hoque
- Department of Medicine and Surgery, Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Zakir Hossain Road, Khulshi, Chattogram, 4225, Bangladesh.
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Chakma D, Prince MMB, Islam MH, Tanvir EM, Nabi MM, Reybroeck W, Sasanya JJ, Islam MJ, Islam MN, Talukder MSU, Shaha CK, Mannan MA, Saifullah ASM. Screening for antimicrobial residues in poultry eggs in Bangladesh using Charm II radio-receptor assay technique following validation. FOOD ADDITIVES & CONTAMINANTS. PART B, SURVEILLANCE 2023; 16:288-300. [PMID: 37381071 DOI: 10.1080/19393210.2023.2225157] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 06/11/2023] [Indexed: 06/30/2023]
Abstract
The aim of the study was to screen for the presence of antimicrobial residues in poultry eggs from Bangladesh using the Charm II radio-receptor assay in the absence of expensive confirmatory instrumentation. This was based on cut-off values as set in the validation guidelines according to Commission Decision 2002/657/EC and Commission Implementing Regulation (EU) 2021/808. Fortified eggs spiked with fixed concentrations of doxycycline, erythromycin A, sulphamethazine, and benzylpenicillin were used to determine the cut-off values and detection capabilities (CCβ). Other validation parameters included were applicability, ruggedness, and robustness. A total of 201 egg mix samples from native organic chicken, duck, and commercial farm-raised laying hens (both brown and white eggs) were tested and after analysis 13%, 10%, and 4.5% of the egg mix samples showed positive signals for sulphonamides, macrolides/lincosamides, and tetracyclines, respectively. Presence of multiple drug residues were also suspected in 11 out of 201 egg mix samples.
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Affiliation(s)
- Darmin Chakma
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Md Maruf Billah Prince
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Md Hedayetul Islam
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - E M Tanvir
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Md Mahamodun Nabi
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Wim Reybroeck
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Technology and Food Science Unit (T&V), Melle, Belgium
| | - James Jacob Sasanya
- International Atomic Energy Agency (IAEA), Vienna International Centre, Vienna, Austria
| | - M Jahurul Islam
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Md Nazrul Islam
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Md Shahabe Uddin Talukder
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - Chironjit Kumar Shaha
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - M A Mannan
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
| | - A S M Saifullah
- Veterinary Drug Residue Analysis Division, Institute of Food and Radiation Biology, Atomic Energy Research Establishment, Bangladesh Atomic Energy Commission, Savar, Dhaka, Bangladesh
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Koju P, Shrestha R, Shrestha A, Tamrakar S, Rai A, Shrestha P, Madhup SK, Katuwal N, Shrestha A, Shrestha A, Shrestha S, K.C S, Karki P, Tamang P, Thekkur P, Shakya Shrestha S. Antimicrobial Resistance in E. coli Isolated from Chicken Cecum Samples and Factors Contributing to Antimicrobial Resistance in Nepal. Trop Med Infect Dis 2022; 7:tropicalmed7090249. [PMID: 36136660 PMCID: PMC9504632 DOI: 10.3390/tropicalmed7090249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/10/2022] [Accepted: 09/13/2022] [Indexed: 11/16/2022] Open
Abstract
Microorganisms with antimicrobial resistance (AMR) are prevalent among humans and animals, and also found in the environment. Though organisms with AMR can spread to humans via food from animal sources, the burden of AMR in food-producing animals remains largely unknown. Thus, we assessed the resistance pattern among Escherichia coli isolated from chicken cecum samples and explored issues contributing to AMR in animals in the Dhulikhel Municipality of Nepal. We conducted a mixed-methods study, comprising a cross-sectional quantitative component, with collection of chicken cecal samples from slaughter houses/shops. In addition, a descriptive qualitative component was undertaken, with a focus group discussion and key informant interviews among stakeholders involved in animal husbandry. Of the 190 chicken cecum samples collected, 170 (89%) were subjected to culture and drug sensitivity testing, of which E. coli was isolated from 159 (94%) samples. Of the 159 isolates, 113 (71%) had resistance to ≥3 antimicrobial class. Resistance to tetracycline (86%) and ciprofloxacin (66%) were most prevalent. Overuse of antimicrobials, easy availability of antimicrobials, and lack of awareness among farmers about AMR were major issues contributing to AMR. The high prevalence of resistance among E. coli in chicken cecal samples calls for rational use of antimicrobials, educating farmers, and multi-sectoral coordination.
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Affiliation(s)
- Pramesh Koju
- Pharmacovigilance Unit, Dhulikhel Hospital, Dhulikhel 45210, Nepal
- Department of Public Health and Community Programs, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Rajeev Shrestha
- Pharmacovigilance Unit, Dhulikhel Hospital, Dhulikhel 45210, Nepal
- Department of Pharmacology, School of Medical Sciences, Kathmandu University, Dhulikhel 45210, Nepal
- Research and Development Division, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Abha Shrestha
- Department of Public Health and Community Programs, Dhulikhel Hospital, Dhulikhel 45210, Nepal
- Department of Community Medicine, School of Medical Sciences, Kathmandu University, Dhulikhel 45210, Nepal
| | - Sudichhya Tamrakar
- Research and Development Division, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Anisha Rai
- Research and Development Division, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Priyanka Shrestha
- World Health Emergencies Programme, WHO Country Office, Kathmandu 41825, Nepal
| | | | - Nishan Katuwal
- Research and Development Division, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Archana Shrestha
- Department of Public Health and Community Programs, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Akina Shrestha
- Department of Public Health and Community Programs, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Sunaina Shrestha
- Department of Microbiology, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Sandip K.C
- Health Unit, Dhulikhel Municipality, Dhulikhel 45210, Nepal
| | - Prashamsa Karki
- Department of Microbiology, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Pooja Tamang
- Research and Development Division, Dhulikhel Hospital, Dhulikhel 45210, Nepal
| | - Pruthu Thekkur
- Centre for Operational Research, International Union Against Tuberculosis and Lung Disease (The Union), 75000 Paris, France
| | - Sony Shakya Shrestha
- Pharmacovigilance Unit, Dhulikhel Hospital, Dhulikhel 45210, Nepal
- Department of Pharmacology, School of Medical Sciences, Kathmandu University, Dhulikhel 45210, Nepal
- Correspondence: ; Tel.: +977-9841276045
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Pogurschi EN, Petcu CD, Mizeranschi AE, Zugravu CA, Cirnatu D, Pet I, Ghimpețeanu OM. Knowledge, Attitudes and Practices Regarding Antibiotic Use and Antibiotic Resistance: A Latent Class Analysis of a Romanian Population. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19127263. [PMID: 35742513 PMCID: PMC9224212 DOI: 10.3390/ijerph19127263] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Revised: 06/11/2022] [Accepted: 06/13/2022] [Indexed: 02/04/2023]
Abstract
Considering the major limitations of the latest studies conducted in Romania on the knowledge, attitudes and practices (KAPs) of antibiotic use and antibiotic resistance, we conducted this study to assess this major public health threat. A cross-sectional survey based on a validated questionnaire was conducted among the general population of Romania for a period of 5 months, i.e., September 2021-January 2022. The questionnaire was distributed using Google Form and it covered demographic characteristics and KAP assessments consisting of 12 items on knowledge, 10 items on attitudes and 3 items on practices. Latent class analyses (LCAs) were conducted to group respondents based on their responses. The response rate was 77%, of which females responded in a greater number (n = 1251) compared to males (n = 674). For most of the respondents (67.32%, n = 1296), the education level was high school, while 23.58% (n = 454) of respondents were college graduates. One in three Romanians (33.3%) know the WHO predictions related to this topic. Overall, the Romanian population is less disciplined when it comes to completing antibiotic treatments, as 29.19% of the respondents stop the course of antibiotic administration if their symptoms improve. The key findings from the present study may help policy makers in designing targeted interventions to decrease confusion, ambiguity or misconceptions about antibiotic use.
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Affiliation(s)
- Elena Narcisa Pogurschi
- Public Health and Food Safety Laboratory, Department Formative Science in Animal Breeding and Food Industry, Faculty of Animal Productions Engineering and Management, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 011464 Bucharest, Romania;
| | - Carmen Daniela Petcu
- Department Animal Production and Public Health, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 050097 Bucharest, Romania;
| | | | - Corina Aurelia Zugravu
- Department-Fundamental Disciplines, Faculty of Midwifery and Nursing, University of Medicine and Pharmacy “Carol Davila”, 050474 Bucharest, Romania;
| | - Daniela Cirnatu
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, “Vasile Goldis” Western University of Arad, 310025 Arad, Romania;
| | - Ioan Pet
- Department of Biotechnologies, Bioengineering, Faculty of Animal Resources, Banat University of Agricultural Science and Veterinary Medicine “Regele Mihai I al Romaniei”, 300645 Timisoara, Romania;
| | - Oana-Mărgărita Ghimpețeanu
- Department Animal Production and Public Health, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 050097 Bucharest, Romania;
- Correspondence: ; Tel.: +40-724529434
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Arsène MMJ, Davares AKL, Viktorovna PI, Andreevna SL, Sarra S, Khelifi I, Sergueïevna DM. The public health issue of antibiotic residues in food and feed: Causes, consequences, and potential solutions. Vet World 2022; 15:662-671. [PMID: 35497952 PMCID: PMC9047141 DOI: 10.14202/vetworld.2022.662-671] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 02/08/2022] [Indexed: 02/01/2023] Open
Abstract
Antibiotics are among the essential veterinary medicine compounds associated with animal feed and food animal production. The use of antibiotics for the treatment of bacterial infections is almost unavoidable, with less need to demonstrate their importance. Although banned as a growth factor for a few years, their use in animals can add residues in foodstuffs, presenting several environmental, technological, animal health, and consumer health risks. With regard to human health risks, antibiotic residues induce and accelerate antibiotic resistance development, promote the transfer of antibiotic-resistant bacteria to humans, cause allergies (penicillin), and induce other severe pathologies, such as cancers (sulfamethazine, oxytetracycline, and furazolidone), anaphylactic shock, nephropathy (gentamicin), bone marrow toxicity, mutagenic effects, and reproductive disorders (chloramphenicol). Antibiotic resistance, which has excessively increased over the years, is one of the adverse consequences of this phenomenon, constituting a severe public health issue, thus requiring the regulation of antibiotics in all areas, including animal breeding. This review discusses the common use of antibiotics in agriculture and antibiotic residues in food/feed. In-depth, we discussed the detection techniques of antibiotic residues, potential consequences on the environment and animal health, the technological transformation processes and impacts on consumer health, and recommendations to mitigate this situation.
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Affiliation(s)
| | | | | | | | - Souadkia Sarra
- Department of Microbiology and Virology, Institute of Medicine, RUDN University, Moscow, Russia
| | - Ibrahim Khelifi
- Department of Microbiology and Virology, Institute of Medicine, RUDN University, Moscow, Russia
| | - Das Milana Sergueïevna
- Department of Microbiology and Virology, Institute of Medicine, RUDN University, Moscow, Russia
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Kimera ZI, Mgaya FX, Mshana SE, Karimuribo ED, Matee MIN. Occurrence of Extended Spectrum Beta Lactamase (ESBL) Producers, Quinolone and Carbapenem Resistant Enterobacteriaceae Isolated from Environmental Samples along Msimbazi River Basin Ecosystem in Tanzania. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18168264. [PMID: 34444027 PMCID: PMC8394723 DOI: 10.3390/ijerph18168264] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/24/2021] [Accepted: 07/28/2021] [Indexed: 12/18/2022]
Abstract
We conducted environmental surveillance of antimicrobial resistance (AMR) bacteria in the Msimbazi river basin in Tanzania to determine the occurrence of extended-spectrum β-lactamase (ESBL)-producing, carbapenem resistant Enterobacteriaceae (CRE) and quinolone resistant Escherichia coli and Klebsiella spp. A total of 213 Enterobacteriaceae isolates were recovered from 219 samples. Out of the recovered isolates, 45.5% (n = 97) were Klebsiella pneumoniae and 29.6% (n = 63) were Escherichia coli. K. pneumoniae isolates were more resistant in effluent (27.9%) compared to the E. coli (26.6%). The E. coli had a higher resistance in river water, sediment and crop soil than the K. pneumoniae (35 versus 25%), respectively. Higher resistance in K. pneumoniae was found in nalidixic acid (54.6%) and ciprofloxacin (33.3%) while the E. coli isolates were highly resistant to ciprofloxacin (39.7%) and trimethoprim/sulfamethoxazole (38%). Resistance increased from 28.3% in Kisarawe, where the river originates, to 59.9% in Jangwani (the middle section) and 66.7% in Upanga West, where the river enters the Indian Ocean. Out of 160 E. coli and K. pneumoniae isolates, 53.2% (n = 85) were resistant to more than three classes of the antibiotic tested, occurrence being higher among ESBL producers, quinolone resistant and carbapenem resistant strains. There is an urgent need to curb environmental contamination with antimicrobial agents in the Msimbazi Basin.
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Affiliation(s)
- Zuhura I. Kimera
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania; (F.X.M.); (M.I.N.M.)
- Ministry of Livestock and Fisheries, Mtumba Area, P.O. Box 2182, Dodoma 40487, Tanzania
- Correspondence:
| | - Fauster X. Mgaya
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania; (F.X.M.); (M.I.N.M.)
| | - Stephen E. Mshana
- Department of Microbiology and Immunology, Catholic University of Health and Allied Sciences, P.O. Box 1464, Mwanza 33109, Tanzania;
- SACIDS Africa Centre of Excellence for Infectious Diseases, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania;
| | - Esron D. Karimuribo
- SACIDS Africa Centre of Excellence for Infectious Diseases, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania;
- Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, P.O. Box 3021, Morogoro 67125, Tanzania
| | - Mecky I. N. Matee
- Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania; (F.X.M.); (M.I.N.M.)
- SACIDS Africa Centre of Excellence for Infectious Diseases, Sokoine University of Agriculture, P.O. Box 3297, Morogoro 67125, Tanzania;
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Sangeda RZ, Baha A, Erick A, Mkumbwa S, Bitegeko A, Sillo HB, Fimbo AM, Chambuso M, Mbugi EV. Consumption Trends of Antibiotic for Veterinary Use in Tanzania: A Longitudinal Retrospective Survey From 2010-2017. FRONTIERS IN TROPICAL DISEASES 2021. [DOI: 10.3389/fitd.2021.694082] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BackgroundWith increased livestock keeping, multiple prevailing infections, antimicrobial agents’ use and pattern in Tanzania, the development of antimicrobial resistance (AMR) becomes inevitable. Antibiotic-resistant pathogens have increasingly become a major challenge in human and animal medicine. Although inappropriate use of antibiotics in humans is the principal cause of resistance, antibiotic-resistant bacteria originating from animals contribute to the emergence and spread of these bacteria. Antibiotics help control a multitude of bacterial infections that are major causes of diseases in both animals and humans. Rational use in animals is crucial to control any development and transfer of AMR to humans. This study aimed to create quantitative evidence of animal antimicrobial usage patterns in Tanzania to serve as a baseline for surveillance of antimicrobial use and antimicrobial resistance control.MethodologyThis descriptive longitudinal retrospective study was conducted to explore the trend of veterinary-antibiotics consumed in the eight years, from 1st January 2010 to 31st December 2017 in Tanzania mainland. The data source was records of all antibiotics imported for veterinary use into Tanzania’s mainland according to the Tanzania Medicines and Medical Devices Authority (TMDA) records. The analysis employed the World Health Organization (WHO) Collaborating Centre for Drug Statistics Methodology using Anatomical Therapeutic and Chemical (ATC) classification. Regression and time series analysis was used to establish trends in antibiotics consumption.ResultsA total of 12,147,491 kg of antibiotics were consumed in Tanzania from 2010 to 2017. Tetracycline, sulfonamides and trimethoprim, quinolones, aminoglycosides, beta-lactams and antibacterial combinations were the most commonly used antibacterial agents in Tanzania. Tetracycline class topped the list with about 8,090,798 kg (66.6%) out of 12,147,491 kg total quantity of antimicrobials consumed. Non-significant, linear curve estimations and time series analysis indicate a decline in the quantities of veterinary antibiotics used in the eight years from 2010 to 2017.ConclusionsThis study suggests that tetracycline is the most used antibiotic class for veterinary medicine in Tanzania. The trend of antimicrobial use is generally decreasing compared to other countries in Africa. Even though some antibiotics have the lowest consumption rate, they are also prone to AMR, prompting follow-up by the relevant regulatory authorities.
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Frumence G, Mboera LEG, Sindato C, Durrance-Bagale A, Jung AS, Mshana SE, Clark TG, Legido-Quigley H, Matee MI. Practices and Challenges of Veterinary Paraprofessionals in Regards to Antimicrobial Use and Resistance in Animals in Dar Es Salaam, Tanzania. Antibiotics (Basel) 2021; 10:antibiotics10060733. [PMID: 34204437 PMCID: PMC8234030 DOI: 10.3390/antibiotics10060733] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 11/16/2022] Open
Abstract
We conducted a qualitative study to explore the practices and challenges of veterinary paraprofessionals (paravets) on antimicrobial use and resistance in domestic animals. METHODS This was a qualitative study, which involved semi-structured interviews with paravets from the Ilala, Ubungo, Kigamboni, Kinondoni, and Temeke districts in Dar es Salaam, Tanzania. RESULTS A total of 40 paravets participated in this study. The majority (72.5%) admitted to having not undergone any formal training on antimicrobial use and/or resistance. Paravets face several challenges, including poor working conditions and having no access to laboratory services to advise on antimicrobial choice and selection. They also face challenges from livestock farmers such as the inability to afford the recommended medicines, the self-prescription of antimicrobials, and poor record keeping. The presence of sub-standard medicine and the lack of guidelines on the appropriate disposal of medicines were also identified as affecting their services. CONCLUSION Paravets should be trained in the judicious use of antimicrobials, and the same training should be used to refresh their knowledge on the diagnosis and prevention of infections. The Veterinary Council of Tanzania and other regulatory agencies should assist in addressing the challenges facing paravets that are related to animal health services and the quality of medicines.
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Affiliation(s)
- Gasto Frumence
- Department of Development Studies, School of Public Health and Social Sciences, Muhimbili University of Health and Allied Sciences, P.O. Box 65454, Dar es Salaam 65001, Tanzania
- SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 3019, Tanzania; (L.E.G.M.); (C.S.); (S.E.M.); (M.I.M.)
- Correspondence:
| | - Leonard E. G. Mboera
- SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 3019, Tanzania; (L.E.G.M.); (C.S.); (S.E.M.); (M.I.M.)
| | - Calvin Sindato
- SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 3019, Tanzania; (L.E.G.M.); (C.S.); (S.E.M.); (M.I.M.)
- National Institute for Medical Research, Tabora Research Centre, P.O. Box 482, 026 Boma Road, Tabora 45026, Tanzania
| | - Anna Durrance-Bagale
- London School of Hygiene and Tropical Medicine, London WC1H 9SH, UK; (A.D.-B.); (A.-S.J.); (T.G.C.); (H.L.-Q.)
| | - Anne-Sophie Jung
- London School of Hygiene and Tropical Medicine, London WC1H 9SH, UK; (A.D.-B.); (A.-S.J.); (T.G.C.); (H.L.-Q.)
| | - Stephen E. Mshana
- SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 3019, Tanzania; (L.E.G.M.); (C.S.); (S.E.M.); (M.I.M.)
- Department of Medical Microbiology, Catholic University of Health and Allied Sciences, P.O. Box 1464, Mwanza 33109, Tanzania
| | - Taane G. Clark
- London School of Hygiene and Tropical Medicine, London WC1H 9SH, UK; (A.D.-B.); (A.-S.J.); (T.G.C.); (H.L.-Q.)
| | - Helena Legido-Quigley
- London School of Hygiene and Tropical Medicine, London WC1H 9SH, UK; (A.D.-B.); (A.-S.J.); (T.G.C.); (H.L.-Q.)
| | - Mecky I. Matee
- SACIDS Foundation for One Health, Sokoine University of Agriculture, Morogoro 3019, Tanzania; (L.E.G.M.); (C.S.); (S.E.M.); (M.I.M.)
- Department of Microbiology and Immunology, School of Medicine, Muhimbili University of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam 11103, Tanzania
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Treiber FM, Beranek-Knauer H. Antimicrobial Residues in Food from Animal Origin-A Review of the Literature Focusing on Products Collected in Stores and Markets Worldwide. Antibiotics (Basel) 2021; 10:534. [PMID: 34066335 PMCID: PMC8148204 DOI: 10.3390/antibiotics10050534] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/28/2021] [Accepted: 04/30/2021] [Indexed: 11/16/2022] Open
Abstract
The extensive use of antibiotics leads to antibiotic residues in frequently consumed foods. Generally, the main use of antibiotics in animals is to treat and prevent diseases and growth promotion. However, the residues and their breakdown products have several side effects on the human body and, in a broader sense, on the environment. In relation to the human body, the frequency of mutations is increased, the bone marrow is damaged (chloramphenicol), and the reproductive organs of humans are affected. Carcinogenic effects have been found with antibiotics such as sulfamethazine, oxytetracycline, and furazolidone. We summarized data from 73 scientific studies reporting antimicrobial residues in animal products that were freely available for sale. The studies were published in English starting from 1999 till 2021 and identified through the Pubmed search engine. The aims were to find out which antibiotics, legal or illegal, could be found in animal foods worldwide. Which are stable to get into the food chain and exceed the maximum residue limits (MRL) regarding the EU guidelines as a comparison. Reducing antimicrobial residues in food from animal origin and, in addition to this, fighting the tremendous growth and spread of antimicrobial resistance will undoubtedly be one of the most difficult food safety challenges in the coming years.
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Affiliation(s)
- Fritz Michael Treiber
- Institute of Molecular Biosciences, University of Graz, Humboldtstrasse 50/EG, A-8010 Graz, Austria;
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Mdegela RH, Mwakapeje ER, Rubegwa B, Gebeyehu DT, Niyigena S, Msambichaka V, Nonga HE, Antoine-Moussiaux N, Fasina FO. Antimicrobial Use, Residues, Resistance and Governance in the Food and Agriculture Sectors, Tanzania. Antibiotics (Basel) 2021; 10:antibiotics10040454. [PMID: 33923689 PMCID: PMC8073917 DOI: 10.3390/antibiotics10040454] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 02/23/2021] [Accepted: 03/18/2021] [Indexed: 02/05/2023] Open
Abstract
All infections are potentially curable as long as the etiological agents are susceptible to antimicrobials. The increased rate at which antimicrobials are becoming ineffective is a global health risk of increasing concern that threatens withdrawal of beneficial antimicrobials for disease control. The increased demand for food of animal origin, in particular eggs, meat and milk has led to intensification and commercial production systems where excessive use and misuse of antimicrobials may prevail. Antimicrobials, handled and used by farmers and animal attendants with no formal education, may be predisposed to incorrect dosages, misuse, incorrect applications and non-adherence to withdrawal periods. This study was conducted to assess the regulatory roles and governance of antimicrobials, establish the pattern and extent of their use, evaluate the antimicrobial residues and resistance in the food animals and crop agriculture value chains, and relate these findings to existing strategies in place for combating the emergence of antimicrobial resistance in Tanzania. A multimethod approach (desk review, field study and interviews) was used. Relevant establishments were also visited. High levels of resistance to penicillin G, chloramphenicol, streptomycin and oxytetracycline have been reported, especially for Actinobacter pyogenes, Staphylococcus hyicus, Staphylococcus intermedius and Staphylococcus aureus from dairy cattle with mastitis and in humans. Similar trends were found in poultry where eggs and meat are contaminated with Escherichia coli strains resistant to amoxicillin + clavulanate, sulphamethoxazole and neomycin. An increasing trend of emerging multidrug resistant E. coli, Klebsiella pneumoniae, Staphylococcus aureus and Salmonella was also found in food animals. An increase in methicillin resistant Staphlococcus aureus (MRSA) and extended-spectrum beta-lactamase (ESBL) in the livestock sector in Tanzania have been reported. The pathogens isolated in animals were resistant to ampicillin, augmentin, gentamicin, co-trimoxazole, tetracycline, amoxicillin, streptomycin, nalidixic acid, azithromycin, chloramphenicol, tylosin, erythromycin, cefuroxime, norfloxacin and ciprofloxacin. An increased usage of antimicrobials for prophylaxis, and therapeutics against pathogens and for growth promotion in livestock, aquaculture and crop production were observed. A One Health strategic approach is advocated to combat antimicrobial resistance (AMR) in the food and agriculture sectors in Tanzania. Practical recommendations include (a) legislation review and implementation; (b) antimicrobial use (AMU), AMR and antimicrobial residue (AR) awareness and advocacy among stakeholders along the value chain; (c) strengthening of surveillance and monitoring programs for AMU, AMR and AR; (d) enhanced development and use of rapid and innovative diagnostic tests and the promotion of biosecurity principles; and (e) good husbandry practices. The utilization of this information to improve public health policies and reduce the burden of AMR will be beneficial.
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Affiliation(s)
- Robinson H. Mdegela
- Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture, Morogoro 3006, Tanzania;
| | - Elibariki R. Mwakapeje
- Emergency Centre for Transboundary Animal Diseases (ECTAD), Food and Agriculture Organization of the United Nations (FAO), Dar es Salaam 14111, Tanzania; (E.R.M.); (B.R.); (V.M.)
| | - Bachana Rubegwa
- Emergency Centre for Transboundary Animal Diseases (ECTAD), Food and Agriculture Organization of the United Nations (FAO), Dar es Salaam 14111, Tanzania; (E.R.M.); (B.R.); (V.M.)
| | - Daniel T. Gebeyehu
- Faculty of Veterinary Medicine, University of Liège, 4032 Liege, Belgium; (D.T.G.); (S.N.); (N.A.-M.)
- Department of Veterinary Medicine, School of Veterinary Medicine, Wollo University, Dessie 6000, Ethiopia
| | - Solange Niyigena
- Faculty of Veterinary Medicine, University of Liège, 4032 Liege, Belgium; (D.T.G.); (S.N.); (N.A.-M.)
| | - Victoria Msambichaka
- Emergency Centre for Transboundary Animal Diseases (ECTAD), Food and Agriculture Organization of the United Nations (FAO), Dar es Salaam 14111, Tanzania; (E.R.M.); (B.R.); (V.M.)
| | - Hezron E. Nonga
- Directorate of Veterinary Services, Ministry of Livestock and Fisheries, Dodoma 41000, Tanzania;
| | - Nicolas Antoine-Moussiaux
- Faculty of Veterinary Medicine, University of Liège, 4032 Liege, Belgium; (D.T.G.); (S.N.); (N.A.-M.)
| | - Folorunso O. Fasina
- Emergency Centre for Transboundary Animal Diseases (ECTAD), Food and Agriculture Organization of the United Nations (FAO), Dar es Salaam 14111, Tanzania; (E.R.M.); (B.R.); (V.M.)
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Science, University of Pretoria, Onderstepoort 0110, South Africa
- Correspondence: ; Tel.: +255-68-613-2852
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High Carriage Rate of Extended-Spectrum β-Lactamase-Producing Escherichia coli and Klebsiella Species among Poultry Meat Vendors in Dar es Salaam: The Urgent Need for Intervention to Prevent the Spread of Multidrug-Resistant Pathogens. Int J Microbiol 2021; 2021:6653993. [PMID: 33763136 PMCID: PMC7946468 DOI: 10.1155/2021/6653993] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 02/23/2021] [Indexed: 11/18/2022] Open
Abstract
Background Bacteria possessing extended-spectrum beta-lactamase (ESBL), especially E. coli and Klebsiella species, are problematic, particularly in hospitalized patients. Poultry meat vendors are at risk of carrying ESBL-producing bacteria when processing and handling meat products in an unhygienic environment. There is limited information on the carriage rate of ESBL-producing pathogens among poultry meat vendors that necessitated the conduction of the study. Method A cross-sectional study was conducted among poultry meat vendors in Dar es Salaam, Tanzania. Participants provided rectal swabs in transport media upon instruction. The primary isolation of ESBL-producing bacteria was carried out using MacConkey agar supplemented with ceftazidime. Identification of isolates relied on conventional methods. Double-disk synergy was the method used to confirm ESBL-producing isolates. We performed descriptive statistics using Statistical Package for Social Sciences version 23. A p value < 0.05 was considered statistically significant. Results A total of 300 participants were recruited from five districts, with a mean age of 27.2 ± 6.7 years. The majority was male (67.3%), and 74.7% worked as poultry meat vendors for more than one year. Out of 300 participants, 107 (35.7%) had confirmed ESBL-producing E. coli and Klebsiella spp. The majority of confirmed ESBL-producing isolates was E. coli (78.5%). Participants from Ubungo District had significantly higher carriage of ESBL-producing Escherichia coli and Klebsiella spp. (48.0%, 95% CI: 34.8–47.7) than Temeke District (21.4%, 95% CI: 13.4–32.4). Only 28.0% of participants had access to latrines at the workplace, and all working areas lacked access to running water. Conclusion The study revealed a relatively high fecal carriage rate of ESBL-producing E. coli and Klebsiella spp. among poultry meat vendors. Poor working environments and hygienic practices are risks for spread of these multidrug-resitant pathogens.
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12
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Mokgophi TM, Gcebe N, Fasina F, Adesiyun AA. Antimicrobial Resistance Profiles of Salmonella Isolates on Chickens Processed and Retailed at Outlets of the Informal Market in Gauteng Province, South Africa. Pathogens 2021; 10:pathogens10030273. [PMID: 33804304 PMCID: PMC8000370 DOI: 10.3390/pathogens10030273] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 02/20/2021] [Accepted: 02/22/2021] [Indexed: 02/05/2023] Open
Abstract
The study determined the antimicrobial resistance profiles of Salmonella on chickens processed and retailed at outlets of the informal markets in Gauteng province, South Africa. The study also investigated the relationship of antimicrobial resistant Salmonella to the source and type of samples and their serotypes. Carcass swabs, cloacal swabs and carcass drips were randomly collected from each of 151 slaughtered chickens from six townships. Isolation and identification were performed using standard and polymerase chain reaction (PCR) methods. The disc diffusion method was used to determine the resistance of Salmonella isolates to 16 antimicrobial agents and PCR to determine their serovars. Ninety-eight (64.9%) of the 151 chickens were contaminated with Salmonella of which 94.9% (93/98) were resistant serovars. The frequency of antimicrobial resistance of Salmonella isolates was high to erythromycin (94.9%) and spectinomycin (82.7%) but was low to ciprofloxacin (1.0%) and norfloxacin (1.0%) (p < 0.05). All 170 isolates of Salmonella tested exhibited resistance to one or more antimicrobial agents and the frequency varied significantly (p < 0.05) across the townships, the type of samples and the serovars. The prevalence of multidrug resistance (MDR) in Salmonella was 81.8% (139/170). Our findings pose zoonotic, food safety and therapeutic risks to workers and consumers of undercooked, contaminated chickens from these outlets.
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Affiliation(s)
- Thelma M. Mokgophi
- Department of Production Animal Studies, University of Pretoria, Private Bag X 04, Onderstepoort, Pretoria 0110, South Africa;
| | - Nomakorinte Gcebe
- Agricultural Research Council–Bacteriology and Zoonotic Diseases Diagnostic Laboratory, Onderstepoort Veterinary Research, Private Bag X 05, Onderstepoort, Pretoria 0110, South Africa;
| | - Folorunso Fasina
- ECTAD, Food and Agriculture Organization of the UN, Dar es Salaam 14111, Tanzania & Department of Vet-erinary Tropical Diseases, University of Pretoria, Onderstepoort, Pretoria 0110, South Africa;
| | - Abiodun A. Adesiyun
- Department of Production Animal Studies, University of Pretoria, Private Bag X 04, Onderstepoort, Pretoria 0110, South Africa;
- Department of Paraclinical Sciences, School of Veterinary Medicine, University of the West Indies, St. Augustine, Trinidad and Tobago
- Correspondence:
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13
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Hassan MM, El Zowalaty ME, Lundkvist Å, Järhult JD, Khan Nayem MR, Tanzin AZ, Badsha MR, Khan SA, Ashour HM. Residual antimicrobial agents in food originating from animals. Trends Food Sci Technol 2021; 111:141-150. [PMID: 33746363 PMCID: PMC7953985 DOI: 10.1016/j.tifs.2021.01.075] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 01/24/2021] [Accepted: 01/29/2021] [Indexed: 01/08/2023]
Abstract
Background The agricultural food products industry in Bangladesh depends on utilizing antimicrobials indiscriminately as growth promoters and for controlling infectious diseases. Thus, there is always a risk of antimicrobial agent accumulation in food sources that originate from agricultural production. Methods In the present study, we collected data from published articles between January, 2013 and December, 2019 on antimicrobial residues in human food sources such as meat, milk, eggs, and fishes. Results Liver contained the highest percentage of antimicrobial residues (74%; 95% CI: 59.66–85.37) against the invitro enteric pathogen Escherichia coli in layer chickens. Similar results were demonstrated in liver (68%; 95% CI: 53.30–80.48) and kidney (66%, 95% CI: 51.23–78.79) of layer chickens against Bacillus cereus and Bacillus subtilis. Amongst all antibiotics, the highest concentrations of ciprofloxacin were detected in kidney (48.57%; 95% CI: 31.38–66.01), followed by liver (47.56; 95% CI: 40.88–54.30) of broiler chickens. Ciprofloxacin was also present in liver (46.15%; 95% CI: 33.70–58.96) of layer chickens. The percentage of ciprofloxacin in thigh and breast meat in broiler bird were 41.54% (95% CI: 34.54–48.79) and 37.95% (95% CI: 31.11–45.15) respectively. Enrofloxacin was the second most dominant antimicrobial agent and was present in the liver of both types of poultry (Broiler and Layer chickens: 41.54%; 95% CI: 29.44–54.4 and 437.33%; 95% CI: 30.99–44.01). The prevalence rates of enrofloxacin in thigh and breast meat of broiler chickens were 24.10% (95% CI: 18.28–30.73) and 20.51% (95% CI: 15.08–26.87), respectively. Tetracycline, a commonly used antibiotic in livestock, was present in the liver (49.23%; 95% CI: 36.60–61.93) of layer chickens. In case of aquaculture food products, the highest amount of amoxicillin (683.2 mg/kg) was detected in Tilapia fish (Oreochromis niloticus), followed by 584.4 mg/kg in climbing perch (Anabas testudineus) and 555.6 mg/kg in Rui fish (Labeo rohita). Among the five types of fishes, Rui fish (0.000515 mg/kg) contained the highest concentrations of chloramphenicol antibiotic residues. Conclusions The presence of antimicrobial residues in meat, milk, egg, and fish is a serious public health threat due to the potential induction of antimicrobial resistance. It can negatively impact the food supply chain, especially with the current strain that it is already facing with the current COVID-19 pandemic. The findings of the present study highlight the ongoing risk of residual antimicrobial agents in food of animal origin in Bangladesh and countries with similar practices. This can draw the attention of public health officials to propose plans to mitigate or stop this practice.
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Affiliation(s)
- Mohammad Mahmudul Hassan
- Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Chattogram 4225, Bangladesh
| | - Mohamed E El Zowalaty
- Department of Clinical Sciences, College of Medicine, University of Sharjah, Sharjah, 27272, United Arab Emirates.,Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, SE 75 123, Sweden
| | - Åke Lundkvist
- Zoonosis Science Center, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, SE 75 123, Sweden
| | - Josef D Järhult
- Zoonosis Science Center, Department of Medial Sciences, Uppsala University, Sweden
| | - Md Raihan Khan Nayem
- Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Chattogram 4225, Bangladesh
| | - Abu Zubayer Tanzin
- Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Chattogram 4225, Bangladesh
| | - Md Rahim Badsha
- Faculty of Food Science and Technology, Chattogram Veterinary and Animal Sciences University, Chattogram 4225, Bangladesh
| | - Shahneaz Ali Khan
- Faculty of Veterinary Medicine, Chattogram Veterinary and Animal Sciences University, Chattogram 4225, Bangladesh
| | - Hossam M Ashour
- Department of Integrative Biology, College of Arts and Sciences, University of South Florida, St.Petersburg, Florida, 33701, USA.,Department of Microbiology and Immunology, Faculty of Pharmacy, Cairo University, Cairo, 11562, Egypt
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14
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Understanding Antimicrobial Use Contexts in the Poultry Sector: Challenges for Small-Scale Layer Farms in Kenya. Antibiotics (Basel) 2021; 10:antibiotics10020106. [PMID: 33499334 PMCID: PMC7911778 DOI: 10.3390/antibiotics10020106] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/18/2021] [Accepted: 01/20/2021] [Indexed: 11/18/2022] Open
Abstract
The poultry sector contributes significantly to Kenya’s food and economic security. This contribution is expected to rise dramatically with a growing population, urbanization, and preferences for animal-source foods. Antimicrobial resistance is putting the poultry sector in Kenya—and worldwide—at risk of production losses due to the failure of medicines for animal (and human) health. The emergence and spread of antimicrobial resistance has been linked to overuse and misuse of antimicrobials in poultry and other sectors. Previous studies have documented poultry farmer antimicrobial use but without systematic consideration of the contexts (i.e., drivers) as important targets for behavior change, particularly in low- and middle-income countries. To improve understanding of antimicrobial use patterns in poultry systems, we conducted a mixed-methods knowledge, attitudes, and practices study of 76 layer farms in Kiambu County; Kenya. We found that commonly used antibiotics were often labeled for prophylactic, growth promotion, and egg production improvement purposes. Antimicrobial use was also motivated by the presence of diseases/disease symptoms, most of which could instead be managed through infection prevention measures. The results suggest that improving vaccination and biosecurity practices on farms and engaging with drug-makers to ensure proper labeling and marketing of antimicrobial drugs may represent important areas of opportunity for social behavior change communication and/or behavioral science interventions (i.e., nudges) to reduce disease burdens and promote prudent antimicrobial use. We conclude our findings with suggestions for further research into the behavioral insights at play in these scenarios to fuel future intervention development.
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15
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Kimera ZI, Frumence G, Mboera LEG, Rweyemamu M, Mshana SE, Matee MIN. Assessment of Drivers of Antimicrobial Use and Resistance in Poultry and Domestic Pig Farming in the Msimbazi River Basin in Tanzania. Antibiotics (Basel) 2020; 9:antibiotics9120838. [PMID: 33255152 PMCID: PMC7760815 DOI: 10.3390/antibiotics9120838] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 10/23/2020] [Accepted: 10/28/2020] [Indexed: 11/22/2022] Open
Abstract
Uncontrolled use of drugs both in humans and animals coupled with environmental contamination exacerbate the development and spread of antimicrobial resistance. This paper assessed the drivers of antimicrobial use and resistance in poultry and domestic pig farming and the environment. Questionnaires, in-depth interviews, and focus group discussions (FGDs) were used to collect information regarding demographic characteristics, knowledge, practices, attitudes, and perceptions of the drivers of antimicrobial use and resistance in animal farming and the environment. We found a higher proportion of usage of veterinary antimicrobials for prophylactic purposes (87.6%) in animal farming, than for therapeutic purposes (80.5%). The degree of farming experience was significantly (p < 0.05) related to the knowledge on the source of antimicrobial use, methods used in disease diagnosis, access to veterinary services, stocking of antimicrobials at home, and presence of agriculture activities that involve the use of manure. Uncontrolled disposal of wastes from households, disposal of human and veterinary drugs, and weak implementation of the legal framework was identified as the major contributors to the environment. The high usage of veterinary antimicrobials and the environmental contamination identified requires multisectoral interventions, as well as a review of government strategies, policies, and regulations on antimicrobial use.
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Affiliation(s)
- Zuhura I. Kimera
- Muhimbili University of Health and Allied Sciences, P.O. Box 65001, 11103 Dar es Salaam, Tanzania; (G.F.); (M.I.N.M.)
- Ministry of Livestock and Fisheries, Mtumba Area, P.O. Box 2182, 40487 Dodoma, Tanzania
- Correspondence:
| | - Gasto Frumence
- Muhimbili University of Health and Allied Sciences, P.O. Box 65001, 11103 Dar es Salaam, Tanzania; (G.F.); (M.I.N.M.)
| | - Leonard E. G. Mboera
- SACIDS Africa Centre of Excellence for Infectious Diseases, Sokoine University of Agriculture, P.O. Box 3297, 67125 Morogoro, Tanzania; (L.E.G.M.); (M.R.)
| | - Mark Rweyemamu
- SACIDS Africa Centre of Excellence for Infectious Diseases, Sokoine University of Agriculture, P.O. Box 3297, 67125 Morogoro, Tanzania; (L.E.G.M.); (M.R.)
| | - Stephen E. Mshana
- Catholic University of Health and Allied Sciences, P.O. Box 1464, 33109 Mwanza, Tanzania;
| | - Mecky I. N. Matee
- Muhimbili University of Health and Allied Sciences, P.O. Box 65001, 11103 Dar es Salaam, Tanzania; (G.F.); (M.I.N.M.)
- SACIDS Africa Centre of Excellence for Infectious Diseases, Sokoine University of Agriculture, P.O. Box 3297, 67125 Morogoro, Tanzania; (L.E.G.M.); (M.R.)
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16
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Afakye K, Kiambi S, Koka E, Kabali E, Dorado-Garcia A, Amoah A, Kimani T, Adjei B, Caudell MA. The Impacts of Animal Health Service Providers on Antimicrobial Use Attitudes and Practices: An Examination of Poultry Layer Farmers in Ghana and Kenya. Antibiotics (Basel) 2020; 9:E554. [PMID: 32872381 PMCID: PMC7557566 DOI: 10.3390/antibiotics9090554] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 11/16/2022] Open
Abstract
International organizations and governments have argued that animal health service providers can play a vital role in limiting antimicrobial resistance by promoting the prudent use of antimicrobials. However, there is little research on the impact of these service providers on prudent use at the farm level, especially in low- and middle-income countries where enforcement of prudent-use regulations is limited. Here, we use a mixed-methods approach to assess how animal health-seeking practices on layer farms in Ghana (n = 110) and Kenya (n = 76) impact self-reported antimicrobial usage, engagement in prudent administration and withdrawal practices and perceptions of antimicrobial resistance. In general, our results show that the frequency of health-seeking across a range of service providers (veterinarians, agrovets, and feed distributors) does not significantly correlate with prudent or non-prudent use practices or the levels of antimicrobials used. Instead, we find that patterns of antimicrobial use are linked to how much farmers invest in biosecurity (e.g., footbaths) and the following vaccination protocols. Our results emphasize that more research is required to understand the interactions between animal health service providers and farmers regarding antimicrobial use and antimicrobial resistance. Addressing these gaps will be crucial to inform antimicrobial stewardship training, curriculums and, guidelines whose ultimate purpose is to limit the selection and transmission of antimicrobial resistance.
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Affiliation(s)
- Kofi Afakye
- Food and Agriculture Organization of the United Nations, Accra 1628, Ghana; (K.A.); (A.A.); (B.A.)
| | - Stella Kiambi
- Food and Agriculture Organization of the United Nations, Nairobi 00100, Kenya; (S.K.); (T.K.)
| | - Eric Koka
- Department of Sociology and Anthropology, University of Cape Coast, Cape Coast 5007, Ghana;
| | - Emmanuel Kabali
- Food and Agriculture Organization of the United Nations, 00153 Rome, Italy; (E.K.); (A.D.-G.)
| | - Alejandro Dorado-Garcia
- Food and Agriculture Organization of the United Nations, 00153 Rome, Italy; (E.K.); (A.D.-G.)
| | - Ann Amoah
- Food and Agriculture Organization of the United Nations, Accra 1628, Ghana; (K.A.); (A.A.); (B.A.)
| | - Tabitha Kimani
- Food and Agriculture Organization of the United Nations, Nairobi 00100, Kenya; (S.K.); (T.K.)
| | - Benjamin Adjei
- Food and Agriculture Organization of the United Nations, Accra 1628, Ghana; (K.A.); (A.A.); (B.A.)
| | - Mark A Caudell
- Food and Agriculture Organization of the United Nations, Nairobi 00100, Kenya; (S.K.); (T.K.)
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Assessing Antibiotic Residues in Poultry Eggs from Backyard Production Systems in Chile, First Approach to a Non-Addressed Issue in Farm Animals. Animals (Basel) 2020; 10:ani10061056. [PMID: 32575363 PMCID: PMC7341250 DOI: 10.3390/ani10061056] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 02/06/2023] Open
Abstract
Eggs are the main product generated from backyard poultry production systems (BPS) because they can quickly be consumed and sold to meet essential family needs. Nevertheless, antimicrobial residues can accumulate in this product. The objective of this study was to evaluate the presence of antimicrobial residues in eggs produced by poultry kept in BPS in central Chile. To assess this, eggs were obtained from 83 BPS and analysed to evaluate the presence of antibiotic residues (families: tetracyclines, beta-lactams, aminoglycosides and macrolides), using a Four-Plate Test screening method for the detection, based on a bacterial growth inhibition method. Results show a lack of biosecurity procedures at BPS level, making these systems susceptible to the dissemination of antimicrobial residues. These include intensive animal production units in the proximity, and the presence of shared watercourses with other farms. Furthermore, 66% of the surveyed owners are indicated as giving pharmacological treatments to their chickens. Eggs from 61 BPS were positive for at least one antimicrobial. Fifty-three BPS were positive for more than one antimicrobial, and one BPS was positive for all four antimicrobials tested. Consequently, there is a risk that poultry eggs produced in BPS in central Chile carry residues of different families of antimicrobials.
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18
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Adesiyun AA, Nkuna C, Mokgoatlheng‐Mamogobo M, Malepe K, Simanda L. Food safety risk posed to consumers of table eggs from layer farms in Gauteng Province, South Africa: Prevalence of
Salmonella
species and
Escherichia coli
, antimicrobial residues, and antimicrobial resistant bacteria. J Food Saf 2020. [DOI: 10.1111/jfs.12783] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Abiodun A. Adesiyun
- Department of Production Animal Studies, Faculty of Veterinary ScienceUniversity of Pretoria Onderstepoort South Africa
| | - Charlotte Nkuna
- Poultry Disease Management AgencySouth African Poultry Association (SAPA) Johannesburg South Africa
| | | | - Keleabetswe Malepe
- Veterinary Public Health UnitDepartment of Agriculture Forestry and Fisheries (DAFF), Pretoria South Africa
| | - Liberty Simanda
- Residue LaboratoryOndersterpoort Veterinary Research Onderstepoort South Africa
- Randox Food Diagnostics, Ltd. London UK
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19
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Caudell MA, Dorado-Garcia A, Eckford S, Creese C, Byarugaba DK, Afakye K, Chansa-Kabali T, Fasina FO, Kabali E, Kiambi S, Kimani T, Mainda G, Mangesho PE, Chimpangu F, Dube K, Kikimoto BB, Koka E, Mugara T, Rubegwa B, Swiswa S. Towards a bottom-up understanding of antimicrobial use and resistance on the farm: A knowledge, attitudes, and practices survey across livestock systems in five African countries. PLoS One 2020; 15:e0220274. [PMID: 31978098 PMCID: PMC6980545 DOI: 10.1371/journal.pone.0220274] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Accepted: 12/25/2019] [Indexed: 02/05/2023] Open
Abstract
The nutritional and economic potentials of livestock systems are compromised by the emergence and spread of antimicrobial resistance. A major driver of resistance is the misuse and abuse of antimicrobial drugs. The likelihood of misuse may be elevated in low- and middle-income countries where limited professional veterinary services and inadequately controlled access to drugs are assumed to promote non-prudent practices (e.g., self-administration of drugs). The extent of these practices, as well as the knowledge and attitudes motivating them, are largely unknown within most agricultural communities in low- and middle-income countries. The main objective of this study was to document dimensions of knowledge, attitudes and practices related to antimicrobial use and antimicrobial resistance in livestock systems and identify the livelihood factors associated with these dimensions. A mixed-methods ethnographic approach was used to survey households keeping layers in Ghana (N = 110) and Kenya (N = 76), pastoralists keeping cattle, sheep, and goats in Tanzania (N = 195), and broiler farmers in Zambia (N = 198), and Zimbabwe (N = 298). Across countries, we find that it is individuals who live or work at the farm who draw upon their knowledge and experiences to make decisions regarding antimicrobial use and related practices. Input from animal health professionals is rare and antimicrobials are sourced at local, privately owned agrovet drug shops. We also find that knowledge, attitudes, and particularly practices significantly varied across countries, with poultry farmers holding more knowledge, desirable attitudes, and prudent practices compared to pastoralist households. Multivariate models showed that variation in knowledge, attitudes and practices is related to several factors, including gender, disease dynamics on the farm, and source of animal health information. Study results emphasize that interventions to limit antimicrobial resistance should be founded upon a bottom-up understanding of antimicrobial use at the farm-level given limited input from animal health professionals and under-resourced regulatory capacities within most low- and middle-income countries. Establishing this bottom-up understanding across cultures and production systems will inform the development and implementation of the behavioral change interventions to combat antimicrobial resistance globally.
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Affiliation(s)
- Mark A. Caudell
- Food and Agriculture Organization of the United Nations, Nairobi, Kenya
| | | | - Suzanne Eckford
- Food and Agriculture Organization of the United Nations, Rome, Italy
| | - Chris Creese
- Food and Agriculture Organization of the United Nations, Rome, Italy
| | | | - Kofi Afakye
- Food and Agriculture Organization of the United Nations, Accra, Ghana
| | | | - Folorunso O. Fasina
- Food and Agriculture Organization of the United Nations, Dar es Salaam, Tanzania
| | - Emmanuel Kabali
- Food and Agriculture Organization of the United Nations, Harare, Zimbabwe
| | - Stella Kiambi
- Food and Agriculture Organization of the United Nations, Nairobi, Kenya
| | - Tabitha Kimani
- Food and Agriculture Organization of the United Nations, Nairobi, Kenya
| | - Geoffrey Mainda
- Department of Veterinary Services, Ministry of Fisheries and Livestock, Lusaka, Zambia
| | - Peter E. Mangesho
- National Institute for Medical Research, Amani Medical Research Centre, Muheza, Tanzania
| | - Francis Chimpangu
- Food and Agriculture Organization of the United Nations, Lusaka, Zambia
| | - Kululeko Dube
- Food and Agriculture Organization of the United Nations, Harare, Zimbabwe
| | | | - Eric Koka
- Department of Sociology and Anthropology, University of Cape Coast, Cape Coast, Ghana
| | - Tendai Mugara
- Food and Agriculture Organization of the United Nations, Harare, Zimbabwe
| | - Bachana Rubegwa
- Food and Agriculture Organization of the United Nations, Dar es Salaam, Tanzania
| | - Samuel Swiswa
- Division of Veterinary Services, Department of Livestock and Veterinary Services, Harare, Zimbabwe
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20
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Cuong NV, Padungtod P, Thwaites G, Carrique-Mas JJ. Antimicrobial Usage in Animal Production: A Review of the Literature with a Focus on Low- and Middle-Income Countries. Antibiotics (Basel) 2018; 7:E75. [PMID: 30111750 PMCID: PMC6164101 DOI: 10.3390/antibiotics7030075] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2018] [Revised: 08/07/2018] [Accepted: 08/10/2018] [Indexed: 12/14/2022] Open
Abstract
Antimicrobial use (AMU) in animal production is a key contributor to antimicrobial resistance (AMR) worldwide. As consumption of animal protein and associated animal production is forecast to increase markedly over coming years in low- and middle-income countries (LMICs), accurate monitoring of AMU has become imperative. We summarized data from 89 scientific studies reporting AMU data in animal production published in English since 1998, identified through the 'ISI Web of Knowledge' search engine. The aims were as follows: (a) to describe methodologies and metrics used to quantify AMU; (b) to summarize qualitative (on-farm prevalence of use) and quantitative (amounts of antimicrobial active principle) data, in order to identify food animal species at the highest risk of AMU; and (c) to highlight data gaps from LMICs. Only 17/89 (19.1%) studies were conducted in LMICs. Sixty (67.3%) reported quantitative data use, with 'daily doses per animal-time' being the most common metric. AMU was greatest in chickens (138 doses/1000 animal-days [inter quartile range (IQR) 91.1⁻438.3]), followed by swine (40.2 [IQR 8.5⁻120.4]), and dairy cattle (10.0 [IQR 5.5⁻13.6]). However, per kg of meat produced, AMU was highest in swine, followed by chickens and cattle. Our review highlights a large deficit of data from LMICs, and provides a reference for comparison with further surveillance and research initiatives aiming to reduce AMU in animal production globally.
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Affiliation(s)
- Nguyen V Cuong
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam.
| | - Pawin Padungtod
- Emergency Center for Transboundary Animal Diseases, Food and Agriculture Organization of the United Nations, Green One UN House Building, 304 Kim Ma, Hanoi, Vietnam.
| | - Guy Thwaites
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam.
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, Oxford University, Old Road Campus, Headington, Oxford OX3 7BN, UK.
| | - Juan J Carrique-Mas
- Oxford University Clinical Research Unit, 764 Vo Van Kiet, District 5, Ho Chi Minh City, Vietnam.
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, Oxford University, Old Road Campus, Headington, Oxford OX3 7BN, UK.
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21
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Gwandu SH, Nonga HE, Mdegela RH, Katakweba AS, Suleiman TS, Ryoba R. Assessment of Raw Cow Milk Quality in Smallholder Dairy Farms in Pemba Island Zanzibar, Tanzania. Vet Med Int 2018; 2018:1031726. [PMID: 29721257 PMCID: PMC5867610 DOI: 10.1155/2018/1031726] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Accepted: 01/24/2018] [Indexed: 11/17/2022] Open
Abstract
Milk quality depends on the physicochemical characteristics, hygienic standards, and nutritional quality; however, animal husbandry practices, unhygienic harvesting and processing, may affect its quality. A cross-sectional study was conducted between August 2010 and July 2011 to assess the hygiene of cow milk production environment, raw cow milk physicochemical characteristics, and microbial quality and estimate the prevalence of antimicrobial residues using standard methods in Pemba Island. A total of 98 raw cow milk samples from selected smallholder dairy farms were analyzed, and the judgement on the quality used the East African Standards. Generally, the milk production chain was done under the unhygienic condition, and dirty plastic containers were used for collection and storage of milk under room temperature. Some milk samples had abnormal colour (2.1%), abnormal smell (7.1%), and pH below normal (35.7%), clotted on alcohol test (9.2%), and had the specific gravity below normal (13.3%). All the milk samples had mineral contents within the recommended range. Milk samples with butterfat below normal were 29.6%, while 14.3% had total solids below recommended values. The mean total viable count (TVC) of milk container surfaces was 9.7 ± 10.5 log CFU/100 cm2, while total coliform count (TCC) was 7.8 ± 8.5 log CFU/100 cm2. Up to 55.1% of milk had TVC beyond the recommended levels. The milk mean TVC was 11.02 ± 11.6 log CFU/ml and TCC was 6.7 ± 7.3 log CFU/ml. Up to 26.5% of milk samples had the TCC beyond levels. Results on physicochemical characteristics and nutritional analysis show that the raw cow milk in Pemba Island is of inferior quality. Microbiological results of this study imply heavy contaminations of milk. Antimicrobial residues were detected in 83% of the samples and most of them were from Wete District. Unhygienic milk production chain accelerates microbial contaminations, and antimicrobial residues in milk are a big problem that needs urgent attention from the responsible authority.
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Affiliation(s)
- S. H. Gwandu
- Ministry of Education and Vocational Training, P.O. Box 90543, Dar es Salaam, Tanzania
| | - H. E. Nonga
- Department of Veterinary Medicine and Public Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3021, Chuo Kikuu, Morogoro, Tanzania
| | - R. H. Mdegela
- Department of Veterinary Medicine and Public Health, College of Veterinary Medicine and Biomedical Sciences, Sokoine University of Agriculture, P.O. Box 3021, Chuo Kikuu, Morogoro, Tanzania
| | - A. S. Katakweba
- Pest Management Centre, Sokoine University of Agriculture, P.O. Box 3010, Chuo Kikuu, Morogoro, Tanzania
| | - T. S. Suleiman
- Department of Veterinary Services, Ministry of Livestock and Fisheries, P.O. Box 295, Zanzibar, Tanzania
| | - R. Ryoba
- Department of Animal Science and Production, Sokoine University of Agriculture, P.O. Box 3004, Chuo Kikuu, Morogoro, Tanzania
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22
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Molecular Typing and Antimicrobial Susceptibility of Methicillin-Resistant Staphylococcus aureus Isolated from Bovine Milk in Tanzania. Int J Microbiol 2018; 2018:4287431. [PMID: 29721021 PMCID: PMC5867597 DOI: 10.1155/2018/4287431] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 01/30/2018] [Accepted: 02/11/2018] [Indexed: 12/23/2022] Open
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) in raw milk can be transmitted from animals to humans, and in Tanzania raw milk is sold in local markets and consumed as purchased. This study was performed to determine the molecular characteristics and antimicrobial susceptibility pattern of MRSA strains isolated from raw bovine milk sold at local markets in Tanzania. A total of 117 raw milk samples were cultured on Baird-Parker medium to isolate S. aureus and PCR was used for amplification of gltB gene for S. aureus identification and the presence of mecA gene for methicillin-resistant strains. Coagulase-negative (CN) S. aureus were reconfirmed using tube coagulase, DNase, and API Staph tests. MRSA isolates were spa typed whereas antimicrobial susceptibility testing was performed by the disc diffusion method. Forty-six coagulase positives (CP) and two CN S. aureus were identified. Most strains were resistant to penicillin (72%), and 3 isolates: 2 CN S. aureus and 1 coagulase-negative Staphylococci (CNS), were phenotypically resistant to vancomycin, oxacillin, and cefoxitin and were confirmed to carry mecA. Resistance to clindamycin, trimethoprim-sulfamethoxazole, and tetracycline was 23.9%, 30.4%, and 41.3%, respectively. Twelve isolates exhibited multidrug resistance; however, only one mecA positive strain among the three was typeable and belonged to spa type t2603. This study reports for the first time the presence of CN variant of MRSA, which was assigned the spa type t2603, and the presence of multidrug resistant S. aureus isolates from bovine milk in Morogoro, Tanzania.
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Graham JP, Eisenberg JNS, Trueba G, Zhang L, Johnson TJ. Small-Scale Food Animal Production and Antimicrobial Resistance: Mountain, Molehill, or Something in-between? ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:104501. [PMID: 29038091 PMCID: PMC5933306 DOI: 10.1289/ehp2116] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 09/05/2017] [Accepted: 09/14/2017] [Indexed: 05/10/2023]
Abstract
Small-scale food animal production is widely practiced around the globe, yet it is often overlooked in terms of the environmental health risks. Evidence suggests that small-scale food animal producers often employ the use of antimicrobials to improve the survival and growth of their animals, and that this practice leads to the development of antimicrobial resistance (AMR) that can potentially spread to humans. The nature of human-animal interactions in small-scale food animal production systems, generally practiced in and around the home, likely augments spillover events of AMR into the community on a scale that is currently unrecognized and deserves greater attention. https://doi.org/10.1289/EHP2116.
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Affiliation(s)
- Jay P Graham
- Public Health Institute , Oakland, California, USA
| | | | - Gabriel Trueba
- Instituto de Microbiologia, Colegio de Ciencias Biologicas y Ambientales, Universidad San Francisco de Quito , Quito, Ecuador
| | - Lixin Zhang
- Department of Epidemiology and Biostatistics, Michigan State University , East Lansing, Michigan, USA
- Department of Microbiology and Molecular Genetics, Michigan State University , East Lansing, Michigan, USA
| | - Timothy J Johnson
- Department of Veterinary and Biomedical Sciences, University of Minnesota , St. Paul, Minnesota, USA
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24
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Kimera ZI, Mdegela RH, Mhaiki CJN, Karimuribo ED, Mabiki F, Nonga HE, Mwesongo J. Determination of oxytetracycline residues in cattle meat marketed in the Kilosa district, Tanzania. ACTA ACUST UNITED AC 2015; 82:911. [PMID: 26842366 PMCID: PMC6238663 DOI: 10.4102/ojvr.v82i1.911] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Revised: 08/02/2015] [Accepted: 08/27/2015] [Indexed: 11/01/2022]
Abstract
Oxytetracycline is used to treat various diseases in cattle. However, its use may be associated with unacceptable residue levels in food. Oxytetracycline residues in tissues from indigenous cattle were determined in a cross-sectional study conducted in the Kilosa district, Tanzania, between November 2012 and April 2013. A total of 60 tissue samples, including muscle, liver and kidney, were collected from slaughterhouses and butchers and analysed for oxytetracycline using high-performance liquid chromatography. Oxytetracycline residues were found in 71.1% of the samples, of which 68.3% were above acceptable regulatory levels. The mean concentration of oxytetracycline across tissues was 3401.1 μg/kg ± 879.3 μg/kg; concentrations in muscle, liver and kidney were 2604.1 μg/kg ± 703.7 μg/kg, 3434.4 μg/kg ± 606.4 μg/kg and 3533.1 μg/kg ± 803.6 μg/kg, respectively. High levels of oxytetracycline residue in meat from indigenous cattle may pose a health threat to consumers in Kilosa. The findings possibly reflect a general lack of implementation of recommended withdrawal periods, ignorance about drug use and lack of extension services. Strict regulation of the use of antimicrobial drugs in the livestock industry and associated testing of animal-derived food sources prior to marketing are required.
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Affiliation(s)
| | | | | | | | | | - Hezron E Nonga
- Department of Veterinary Medicine and Public Health, Sokoine University of Agriculture.
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25
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Kodimalar K, Rajini RA, Ezhilvalavan S, Sarathchandra G. A survey of chlortetracycline concentration in feed and its residue in chicken egg in commercial layer farms. J Biosci 2015; 39:425-31. [PMID: 24845506 DOI: 10.1007/s12038-014-9425-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The worldwide increase in the use of antibiotics as an integral part of poultry and livestock production industry has recently received increasing attention as a contributory factor in the international emergence of antibiotic-resistant bacteria in human beings. To gauge the presence of the aforementioned scenario in the Indian context, a preliminary survey was conducted to assess the use of chlortetracycline (CTC) in 12 commercial layer farms and to quantify and confirm its residue in the egg. Samples of feed and eggs were collected at day 0 (prior to CTC addition), 3rd, 5th and 7th day during treatment and on the 9th and 14th day (2nd and 7th day after withdrawal of CTC) from each of the 12 commercial poultry farms studied. Concentration of CTC in feed was significantly (P less than 0.01) high on the 3rd, 5th and 7th day. On the 9th day and 14th day CTC concentration in feed was significantly (P less than 0.01) lower compared to the earlier 3 days studied. A highly significant difference (P less than 0.01) of the antibiotic residue in egg was observed in all the 5 days with high residual levels of CTC in egg. CTC in feed and its residue in egg were detected even on the 9th and 14th day respectively.
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Affiliation(s)
- K Kodimalar
- Madras Veterinary College, Chennai, Tamil Nadu, India
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26
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Antibiotic Types and Handling Practices in Disease Management among Pig Farms in Ashanti Region, Ghana. J Vet Med 2014; 2014:531952. [PMID: 26464936 PMCID: PMC4590843 DOI: 10.1155/2014/531952] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 08/10/2014] [Accepted: 08/29/2014] [Indexed: 01/21/2023] Open
Abstract
Antibiotic resistance in bacteria is affected by the type of antibiotics used and how they are handled. The types of antibiotics used by 110 pig farms in the Ashanti region and the handling practices of the farmers during disease management were assessed. Injectable tetracycline, sulphadimidine, benzylpenicillin, and dihydrostreptomycin containing antibiotics were overly used by the farmers especially in the management of diarrhea, rashes, and coughs. Unsafe storage and disposal practices observed among the farms reflected the abysmal knowledge on appropriate use of antibiotics. Misdiagnosis and inadequate protection during antibiotic handling in the farms increased the risk of antibiotic resistance development and spread. The factors affecting antibiotic resistance development and spread are rife in pig farms in Ashanti region and appropriate education and veterinary interventions are needed to prevent resistant bacteria from becoming endemic in pork and pig farm communities.
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