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Yamagami Y, Asao M, Takahashi A, Hashimoto Y, Okuyama N, Arai E, Arihara W, Masui R, Shimazaki Y. Prevalence and antimicrobial resistance of Enterococcus spp. isolated from animal feed in Japan. Front Vet Sci 2024; 10:1328552. [PMID: 38327814 PMCID: PMC10847256 DOI: 10.3389/fvets.2023.1328552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 12/26/2023] [Indexed: 02/09/2024] Open
Abstract
The rising prevalence of antimicrobial resistance (AMR) of bacteria is a global health problem at the human, animal, and environmental interfaces, which necessitates the "One Health" approach. AMR of bacteria in animal feed are a potential cause of the prevalence in livestock; however, the role remains unclear. To date, there is limited research on AMR of bacteria in animal feed in Japan. In this study, a total of 57 complete feed samples and 275 feed ingredient samples were collected between 2018 and 2020. Enterococcus spp. were present in 82.5% of complete feed (47/57 samples), 76.5% of soybean meal (62/81), 49.6% of fish meal (55/111), 33.3% of poultry meal (22/66), and 47.1% of meat and bone meal (8/17) samples. Of 295 isolates, E. faecium (33.2% of total isolates) was the dominant Enterococcus spp., followed by E. faecalis (14.2%), E. hirae (6.4%), E. durans (2.7%), E. casseliflavus (2.4%), and E. gallinarum (1.0%). Of 134 isolates which were tested for antimicrobial susceptibility, resistance to kanamycin was the highest (26.1%), followed by erythromycin (24.6%), tetracycline (6.0%), lincomycin (2.2%), tylosin (1.5%), gentamicin (0.8%), and ciprofloxacin (0.8%). All Enterococcus spp. exhibited susceptibility to ampicillin, vancomycin, and chloramphenicol. Of 33 erythromycin-resistant isolates, only two showed a high minimum inhibitory concentration value (>128 μg/mL) and possessed ermB. These results revealed that overall resistance to antimicrobials is relatively low; however, animal feed is a source of Enterococcus spp. It is essential to elucidate the causative factors related to the prevalence of AMR in animal feed.
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Affiliation(s)
- Yohei Yamagami
- Department of Fertilizer and Feed Inspection, Food and Agricultural Materials Inspection Center, Saitama, Japan
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Paredes R, Damme M, Mantilla J, Castellanos LR, Clavijo V, Celis Y, Mehta K, Kumar A, Patiño A, Jeyashree K. Prevalence and antimicrobial resistance of Escherichia coli and Salmonella spp. in animal feed in Colombia. Rev Panam Salud Publica 2023; 47:e57. [PMID: 37082538 PMCID: PMC10105593 DOI: 10.26633/rpsp.2023.57] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 11/14/2022] [Indexed: 04/22/2023] Open
Abstract
Objective To determine the prevalence and antimicrobial resistance of Escherichia coli and Salmonella spp. in animal feed samples collected between 2018 and 2021 in Colombia. Methods This was a laboratory-based cross-sectional study using routine data from the program for inspection, surveillance, and control of animal feed at the Colombian Agriculture Institute. Samples of animal feed for swine, poultry, canine, feline, leporine, piscine, and equine species were processed for detection of E. coli and Salmonella spp. using enrichment and selective culture methods. Isolates were tested for antimicrobial susceptibility using an automated microdilution method. Results Of 1 748 animal feed samples analyzed, 83 (4.7%) were positive for E. coli and 66 (3.8%) for Salmonella spp. The presence of E. coli and Salmonella spp. was highest in feed for poultry (6.4% and 5.5%) and swine (6.1% and 4.3%). Antimicrobial resistance testing was performed in 27 (33%) E. coli isolates and 26 (39%) Salmonella isolates. Among E. coli, resistance was most frequently observed to ampicillin (44.5%) followed by cefazolin (33.3%), ciprofloxacin (29.6%), ampicillin/sulbactam (26%), and ceftriaxone (11.1%). The highest resistance levels in Salmonella spp. isolates were against cefazolin (7.7%) and piperacillin/tazobactam (7.7%). Conclusions This is the first study from Colombia reporting on the prevalence and antimicrobial resistance of E. coli and Salmonella spp. in animal feed samples. Its results establish a baseline over a wide geographical distribution in Colombia. It highlights the need to integrate antimicrobial resistance surveillance in animal feed due to the emergence of resistant bacteria in this important stage of the supply chain.
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Affiliation(s)
- Rocío Paredes
- Instituto Colombiano AgropecuarioMosqueraColombiaInstituto Colombiano Agropecuario, Mosquera, Colombia
| | - Monica Damme
- Instituto Colombiano AgropecuarioMosqueraColombiaInstituto Colombiano Agropecuario, Mosquera, Colombia
| | - Jazmin Mantilla
- Instituto Colombiano AgropecuarioMosqueraColombiaInstituto Colombiano Agropecuario, Mosquera, Colombia
| | - Luis Ricardo Castellanos
- Quadram Institute BioscienceNorwichUnited KingdomQuadram Institute Bioscience, Norwich, United Kingdom
| | - Viviana Clavijo
- Ciencia y Tecnología de Fagos Sciphage S.A.SBogotáColombiaCiencia y Tecnología de Fagos Sciphage S.A.S, Bogotá, Colombia
| | - Yamile Celis
- Pan American Health OrganizationBogotáColombiaPan American Health Organization, Bogotá, Colombia
| | - Kedar Mehta
- GMERS Medical CollegeGotri VadodaraIndiaGMERS Medical College, Gotri Vadodara, India
| | - Ajay Kumar
- International Union Against Tuberculosis and Lung DiseaseParisFranceInternational Union Against Tuberculosis and Lung Disease, Paris, France
- International Union Against Tuberculosis and Lung DiseaseNew DelhiIndiaInternational Union Against Tuberculosis and Lung Disease, New Delhi, India
- Yenepoya (Deemed to be University)MangaluruIndiaYenepoya (Deemed to be University), Mangaluru, India
| | - Ana Patiño
- Instituto Colombiano AgropecuarioMosqueraColombiaInstituto Colombiano Agropecuario, Mosquera, Colombia
| | - Kathiresan Jeyashree
- Indian Council of Medical Research–National Institute of EpidemiologyChennaiIndiaIndian Council of Medical Research–National Institute of Epidemiology, Chennai, India
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Feed Safety and the Development of Poultry Intestinal Microbiota. Animals (Basel) 2022; 12:ani12202890. [PMID: 36290275 PMCID: PMC9598862 DOI: 10.3390/ani12202890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 10/10/2022] [Accepted: 10/18/2022] [Indexed: 11/18/2022] Open
Abstract
Simple Summary Intensive gut colonisation of animals starts immediately after birth or hatch. Oral route of colonisation, and consequently the first feed, plays a significant role in the continual defining of the intestinal microbial community. The feed can influence colonisation in two ways: providing the microbial inoculum and providing the nutritional requirements that suit a specific type of microbes. In combination with environmental factors, feed shapes animal’s future health and performance from the first day of life. The objective of this review was to investigate feed safety aspects of animal nutrition from the gut colonisation aspect. Abstract The first feed offered to young chicks is likely the most important meal in their life. The complex gut colonisation process is determined with early exposure and during the first days of life before the microbial community is formed. Therefore, providing access to high-quality feed and an environment enriched in the beneficial and deprived of pathogenic microorganisms during this period is critical. Feed often carries a complex microbial community that can contain major poultry pathogens and a range of chemical contaminants such as heavy metals, mycotoxins, pesticides and herbicides, which, although present in minute amounts, can have a profound effect on the development of the microbial community and have a permanent effect on bird’s overall health and performance. The magnitude of their interference with gut colonisation in livestock is yet to be determined. Here, we present the animal feed quality issues that can significantly influence the microbial community development, thus severely affecting the bird’s health and performance.
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Gosling R, Oastler C, Nichols C, Jackson G, Wales AD, Davies RH. Investigations into Salmonella Contamination in Feed Mills Producing Rations for the Broiler Industry in Great Britain. Vet Sci 2022; 9:307. [PMID: 35878324 PMCID: PMC9323917 DOI: 10.3390/vetsci9070307] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 06/10/2022] [Accepted: 06/15/2022] [Indexed: 12/02/2022] Open
Abstract
Feed-associated Salmonella serovars continue to be reported in poultry flocks. A study was conducted to investigate Salmonella contamination in major commercial feed mills that produce rations for broiler chickens within Great Britain. Dust and large moist gauze swab samples (12,791) were collected from 22 feed mills on 31 visits. Salmonella was isolated from 20 mills, with 15 mills (75%) having fewer than 5% Salmonella-positive samples. Fifty-one Salmonella serovars were isolated, with a large proportion of isolates being Salmonella (S.) Kedougou (29.4%) or S. 13,23:i:- (21.4%). European Union-regulated Salmonella serovars (Enteritidis, Infantis, Typhimurium and its monophasic variants) were isolated from 12 mills, mostly from non-processing areas, accounting for 40 isolates (4.4% of all Salmonella-positive samples). Fifteen Salmonella serovars were only isolated once. In terms of individual sampling locations within the mill, the waste handling locations were significantly more likely to be Salmonella-positive than some other mill locations. When sampling locations were grouped, samples collected from finished product areas were significantly less likely to be Salmonella-positive for Salmonella than some other mill areas. In conclusion, this study found that most mills producing broiler rations showed low-level Salmonella contamination.
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Affiliation(s)
- Rebecca Gosling
- Department of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK; (R.G.); (C.N.); (G.J.); (R.H.D.)
| | - Claire Oastler
- Department of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK; (R.G.); (C.N.); (G.J.); (R.H.D.)
| | - Christopher Nichols
- Department of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK; (R.G.); (C.N.); (G.J.); (R.H.D.)
- Woodland Trust, Kempton Way, Grantham NG31 6LL, UK
| | - George Jackson
- Department of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK; (R.G.); (C.N.); (G.J.); (R.H.D.)
| | - Andrew D. Wales
- Department of Pathology and Infectious Diseases, School of Veterinary Medicine, University of Surrey, Guildford GU2 7AL, UK;
| | - Robert H. Davies
- Department of Bacteriology, Animal and Plant Health Agency (APHA–Weybridge), Woodham Lane, New Haw, Addlestone KT15 3NB, UK; (R.G.); (C.N.); (G.J.); (R.H.D.)
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Domesle KJ, Young SR, McDonald RC, Ge B. Versatility of a Salmonella Loop-Mediated Isothermal Amplification Assay Using Multiple Platforms and Master Mixes in Animal Food Matrices. J AOAC Int 2022; 105:1503-1515. [DOI: 10.1093/jaoacint/qsac059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 11/14/2022]
Abstract
Abstract
Background
Improvement in Salmonella detection methods greatly enhances the efficiency of various food testing programs. A Salmonella loop-mediated isothermal amplification (LAMP) assay has been validated in animal food through multi-laboratory validation.
Objective
The study aimed to demonstrate the versatility of this molecular assay while expanding it to multiple platforms and various reagent choices for use in animal food testing.
Methods
Following the U.S. Food and Drug Administration (FDA)’s Guidelines for the Validation of Analytical Methods for the Detection of Microbial Pathogens in Foods and Feeds, we examined the inclusivity, exclusivity, and LOD of the assay using two platforms (7500 Fast and Genie II) and three LAMP master mixes (GspSSD, GspSSD2.0, and WarmStart) in seven animal food matrixes (dry cat food, dry dog food, cattle feed, dairy feed, horse feed, poultry feed, and swine feed). The FDA’s Bacteriological Analytical Manual (BAM) Salmonella culture method was the reference method.
Results
Inclusivity and exclusivity data were consistent among all six platform and master mix combinations with a few exceptions. Comparable LODs were observed down to the single-cell level (WarmStart was 10-fold less sensitive). Performance was similar to the BAM method for detecting fractional positive results in seven animal food matrixes. Nonetheless, LAMP time to positive results and annealing/melting temperature differed among master mixes and platforms.
Conclusion
The Salmonella LAMP assay was successfully validated in two platforms and three master mixes, making it a flexible tool for use by the FDA’s field laboratories in regulatory testing of animal food and for adoption by other food testing programs.
Highlights
We demonstrated the LAMP assay’s versatility on two platforms and three master mixes for the rapid and reliable screening of Salmonella in seven animal food matrixes. GspSSD2.0 was the fastest master mix (time to positive results as early as 3.5 min) while Genie II had several attractive features from a user perspective.
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Affiliation(s)
- Kelly J Domesle
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Division of Animal and Food Microbiology , 8401 Muirkirk Rd , Laurel, MD 20708, USA
| | - Shenia R Young
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Division of Animal and Food Microbiology , 8401 Muirkirk Rd , Laurel, MD 20708, USA
| | - Ryan C McDonald
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Division of Animal and Food Microbiology , 8401 Muirkirk Rd , Laurel, MD 20708, USA
| | - Beilei Ge
- U.S. Food and Drug Administration, Center for Veterinary Medicine, Office of Research, Division of Animal and Food Microbiology , 8401 Muirkirk Rd , Laurel, MD 20708, USA
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Muckey M, Huss AR, Jones C. Evaluation of Liquid and Dry Chemical Treatments To Reduce Salmonella Typhimurium Contamination on Animal Food Manufacturing Surfaces. J Food Prot 2022; 85:792-797. [PMID: 35146521 DOI: 10.4315/jfp-21-240] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 02/09/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT Salmonella can be isolated from animal food, ingredients, and animal food manufacturing surfaces. There are limited data regarding the sanitation of animal food manufacturing surfaces. This experiment evaluated the effects of nine chemical treatments on reduction of Salmonella Typhimurium contamination on various manufacturing surfaces. This experiment was a 9 × 5 factorial with nine chemical treatments and five surfaces. The nine chemical treatments included one with no inoculation or sanitation treatment (negative control). In the other eight treatments, inoculation with Salmonella Typhimurium was followed by either no sanitation treatment (positive control) or treatment with ground corn; liquid commercial formaldehyde; liquid food-grade sanitizer; liquid medium chain fatty acid blend of caprylic, caproic, and capric acids (MCFA); dry commercial calcium propionate; dry commercial acidulant; and dry commercial benzoic acid. The five surfaces included stainless steel, plastic, polypropylene tote bag, rubber belt, and rubber tire. Plastic had higher levels of Salmonella in the positive control than did the polypropylene tote bag; other surfaces had intermediate levels (P < 0.05). Surfaces treated with formaldehyde had no detectable Salmonella after treatment, and surfaces treated with MCFA had at least a 4-log reduction compared to the control (P < 0.05). The dry acidulant was the most effective dry sanitizer tested, but it had no impact on Salmonella concentration on rubber tires (P < 0.05). Whereas liquid sanitizers were the most effective in this experiment, they have limitations for use in dry bulk systems. In summary, formaldehyde, food-grade sanitizer, and MCFA were the most effective chemical treatments to reduce Salmonella surface contamination. Surface type can also influence Salmonella mitigation strategies; specifically, stainless steel and plastic can be more challenging to sanitize within animal food facilities. HIGHLIGHTS
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Affiliation(s)
- Mary Muckey
- Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Anne R Huss
- Department of Grain Science and Industry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Cassandra Jones
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, Kansas 66506, USA
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Harrison OL, Rensing S, Jones CK, Trinetta V. Salmonella enterica 4,[5],12:i:-, an Emerging Threat for the Swine Feed and Pork Production Industry. J Food Prot 2022; 85:660-663. [PMID: 34936694 DOI: 10.4315/jfp-21-400] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 12/20/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT Salmonella continues to be a significant cause of foodborne illnesses in human medicine. The Centers for Disease Control and Prevention reported Salmonella as the second leading cause of foodborne illness in the United States and the leading cause of both hospitalizations and deaths. Salmonella enterica 4,[5],12:i:- (STM) is a monophasic variant of Salmonella Typhimurium, and it is an emerging threat to both human and animal health. STM was first identified in the 1980s from poultry products and has become increasingly prevalent in meat products including pork. STM has also been identified in swine farms as well as in feed manufacturing environments and feed itself. Similar pulse-field gel electrophoresis profiles have been observed between human clinical cases and the STM samples originating from swine feed. These related profiles suggest a link between ingestion of contaminated feed by swine and the source of foodborne illness in human. The objective of this article was to better understand the history of STM and the possible pathway from swine feed to table. Continued research is necessary to better understand how STM can enter both the feed supply chain and the pork production chain to avoid contamination of pork products destined for human consumption. HIGHLIGHTS
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Affiliation(s)
- Olivia L Harrison
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Susan Rensing
- Department of Gender, Women, and Sexuality Studies, Kansas State University, Manhattan, Kansas 66506, USA
| | - Cassandra K Jones
- Department of Animal Sciences and Industry, Kansas State University, Manhattan, Kansas 66506, USA
| | - Valentina Trinetta
- Food Science Institute, Kansas State University, Manhattan, Kansas 66506, USA
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Dankittipong N, Fischer EAJ, Swanenburg M, Wagenaar JA, Stegeman AJ, de Vos CJ. Quantitative Risk Assessment for the Introduction of Carbapenem-Resistant Enterobacteriaceae (CPE) into Dutch Livestock Farms. Antibiotics (Basel) 2022; 11:281. [PMID: 35203883 PMCID: PMC8868399 DOI: 10.3390/antibiotics11020281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 02/09/2022] [Accepted: 02/15/2022] [Indexed: 12/10/2022] Open
Abstract
Early detection of emerging carbapenem-resistant Enterobacteriaceae (CPE) in food-producing animals is essential to control the spread of CPE. We assessed the risk of CPE introduction from imported livestock, livestock feed, companion animals, hospital patients, and returning travelers into livestock farms in The Netherlands, including (1) broiler, (2) broiler breeder, (3) fattening pig, (4) breeding pig, (5) farrow-to-finish pig, and (6) veal calf farms. The expected annual number of introductions was calculated from the number of farms exposed to each CPE source and the probability that at least one animal in an exposed farm is colonized. The total number of farms with CPE colonization was estimated to be the highest for fattening pig farms, whereas the probability of introduction for an individual farm was the highest for broiler farms. Livestock feed and imported livestock are the most likely sources of CPE introduction into Dutch livestock farms. Sensitivity analysis indicated that the number of fattening pig farms determined the number of high introductions in fattening pigs from feed, and that uncertainty on CPE prevalence impacted the absolute risk estimate for all farm types. The results of this study can be used to inform risk-based surveillance for CPE in livestock farms.
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Affiliation(s)
- Natcha Dankittipong
- Department Population Health Sciences, Farm Animal Health, Utrecht University, Martinus G. de Bruingebouw, Yalelaan 7, 3584 CL Utrecht, The Netherlands; (E.A.J.F.); (A.J.S.)
| | - Egil A. J. Fischer
- Department Population Health Sciences, Farm Animal Health, Utrecht University, Martinus G. de Bruingebouw, Yalelaan 7, 3584 CL Utrecht, The Netherlands; (E.A.J.F.); (A.J.S.)
| | - Manon Swanenburg
- Wageningen Bioveterinary Research, Wageningen University & Research, Houtribweg 39, 8221 RA Lelystad, The Netherlands; (M.S.); (C.J.d.V.)
| | - Jaap A. Wagenaar
- Department Biomolecular Health Science, Infectious Diseases & Immunology, Utrecht University, Androclusgebouw, Yalelaan 1, 3584 CL Utrecht, The Netherlands;
| | - Arjan J. Stegeman
- Department Population Health Sciences, Farm Animal Health, Utrecht University, Martinus G. de Bruingebouw, Yalelaan 7, 3584 CL Utrecht, The Netherlands; (E.A.J.F.); (A.J.S.)
| | - Clazien J. de Vos
- Wageningen Bioveterinary Research, Wageningen University & Research, Houtribweg 39, 8221 RA Lelystad, The Netherlands; (M.S.); (C.J.d.V.)
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Olson EG, Dittoe DK, Jendza JA, Stock DA, Ricke SC. Application of Microbial Analyses to Feeds and Potential Implications for Poultry Nutrition. Poult Sci 2022; 101:101789. [PMID: 35346494 PMCID: PMC9079344 DOI: 10.1016/j.psj.2022.101789] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 02/05/2022] [Indexed: 11/16/2022] Open
Affiliation(s)
- Elena G Olson
- Meat Science and Animal Biologics Discovery Program, Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706, USA
| | - Dana K Dittoe
- Meat Science and Animal Biologics Discovery Program, Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706, USA
| | - Joshua A Jendza
- BASF Corporation, 100 Park Avenue, Florham Park, NJ 07932, USA
| | - David A Stock
- Biology Department, Stetson University, Deland, FL 32723, USA
| | - Steven C Ricke
- Meat Science and Animal Biologics Discovery Program, Department of Animal and Dairy Sciences, University of Wisconsin, Madison, WI 53706, USA.
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Parker EM, Valcanis M, Edwards LJ, Andersson P, Mollenkopf DF, Wittum TE. Antimicrobial-resistant Salmonella is detected more frequently in feed milling equipment than in raw feed components or processed animal feed. Aust Vet J 2022; 100:213-219. [PMID: 35040117 PMCID: PMC9304270 DOI: 10.1111/avj.13146] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 01/04/2022] [Accepted: 01/06/2022] [Indexed: 11/30/2022]
Abstract
Food for human and animal consumption can provide a vehicle for the transfer of pathogenic and antimicrobial‐resistant bacteria into the food chain. We investigated the antimicrobial susceptibility of 453 Salmonella isolates collected from raw feed components, equipment and finished feed from 17 commercial feed mills in Australia between 2012 and 2021. Previous studies have found Salmonella prevalence and the diversity of Salmonella serotypes are greatest in the raw feed components. We, therefore, hypothesised that we would find a greater proportion of antimicrobial‐resistant Salmonella isolates in the raw feed components compared to other sample types. We found that of 453 isolates tested, 356 (0.80) were susceptible to all antimicrobials tested, 49 (0.11) were nonsusceptible to streptomycin only and 48 (0.11) were resistant to two or more antimicrobials. Of the 48 antimicrobial‐resistant isolates, 44 were found in feed milling equipment, two in raw feed components and two in finished feed. Statistical analysis, using a logistic regression with random effects model, found that the population‐adjusted mean probability of detecting antimicrobial‐resistant Salmonella isolates from feed milling equipment of 0.39, was larger than the probability of detecting resistant isolates in raw feed components 0.01, (P < 0.001) and in finished feed, 0.11, (P = 0.006). This propensity for antimicrobial‐resistant bacteria to colonise feed milling equipment has not been previously reported. Further studies are required to understand the ecology of antimicrobial‐resistant Salmonella in the feed milling environment.
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Affiliation(s)
- E M Parker
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920, Coffey Road, Columbus, Ohio, 43210, USA
| | - M Valcanis
- Microbiological Diagnostic Unit-Public Health Laboratory, Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - L J Edwards
- Ridley AgriProducts Pty Ltd, 70-80, Bald Hill Road, Pakenham, Victoria, 3810, Australia
| | - P Andersson
- Microbiological Diagnostic Unit-Public Health Laboratory, Department of Microbiology and Immunology, The Peter Doherty Institute for Infection and Immunity, University of Melbourne, Melbourne, Victoria, Australia
| | - D F Mollenkopf
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920, Coffey Road, Columbus, Ohio, 43210, USA
| | - T E Wittum
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920, Coffey Road, Columbus, Ohio, 43210, USA
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11
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Parker EM, Parker AJ, Short G, O'Connor AM, Wittum TE. Salmonella detection in commercially prepared livestock feed and the raw ingredients and equipment used to manufacture the feed: A systematic review and meta-analysis. Prev Vet Med 2021; 198:105546. [PMID: 34826732 DOI: 10.1016/j.prevetmed.2021.105546] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 11/08/2021] [Accepted: 11/16/2021] [Indexed: 12/12/2022]
Abstract
Salmonella contamination of livestock feed is a serious veterinary and public health issue. In this study we used a systematic review to assess the prevalence and characterization of Salmonella isolates detected in raw feed components, feed milling equipment and finished feed from 97 studies published from 1955 to 2020 across seven global regions. Eighty-five studies were included in a meta-analyses to estimate the combined prevalence of Salmonella detection and to compare the risk of contamination associated with different sample types. We found the overall combined prevalence estimate of Salmonella detection was 0.14 with a prevalence of 0.18 in raw feed components, 0.09 in finished feed and 0.08 in feed milling equipment. Animal based raw feed components were 3.9 times more likely to be contaminated with Salmonella than plant based raw feed components. Differences between studies accounted for 99 % of the variance in the prevalence estimate for all sample types and there was no effect of region on the prevalence estimates. The combined prevalence of Salmonella detection in raw feed components decreased from 0.25 in 1955 to 0.11 in 2019. The proportion of Salmonella isolates that were resistant to antimicrobials was largest for amikacin (0.20), tetracycline (0.18) streptomycin (0.17), cefotaxime (0.14) and sulfisoxazole (0.11). The prevalence of Salmonella contamination of animal feed varies widely between individual studies and is an ongoing challenge for the commercial feed industry. Control relies on the vigilant monitoring and control of Salmonella in each individual mill.
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Affiliation(s)
- Elizabeth M Parker
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920 Coffey Road, Columbus, OH 43210, United States.
| | - Anthony J Parker
- The Department of Animal Science, The Ohio State University, 2029 Fyffe, Columbus, OH 43210, United States
| | - Gwen Short
- The Wooster Campus Research Library, The Ohio State University, 1680 Madison Ave, Wooster, OH 44691, United States
| | - Annette M O'Connor
- Large Animal Clinical Sciences, Michigan State University, 784 Wilson Road, East Lansing, MI 48824, United States
| | - Thomas E Wittum
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920 Coffey Road, Columbus, OH 43210, United States
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Koutsoumanis K, Allende A, Álvarez‐Ordóñez A, Bolton D, Bover‐Cid S, Chemaly M, Davies R, De Cesare A, Herman L, Hilbert F, Lindqvist R, Nauta M, Ru G, Simmons M, Skandamis P, Suffredini E, Argüello H, Berendonk T, Cavaco LM, Gaze W, Schmitt H, Topp E, Guerra B, Liébana E, Stella P, Peixe L. Role played by the environment in the emergence and spread of antimicrobial resistance (AMR) through the food chain. EFSA J 2021; 19:e06651. [PMID: 34178158 PMCID: PMC8210462 DOI: 10.2903/j.efsa.2021.6651] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The role of food-producing environments in the emergence and spread of antimicrobial resistance (AMR) in EU plant-based food production, terrestrial animals (poultry, cattle and pigs) and aquaculture was assessed. Among the various sources and transmission routes identified, fertilisers of faecal origin, irrigation and surface water for plant-based food and water for aquaculture were considered of major importance. For terrestrial animal production, potential sources consist of feed, humans, water, air/dust, soil, wildlife, rodents, arthropods and equipment. Among those, evidence was found for introduction with feed and humans, for the other sources, the importance could not be assessed. Several ARB of highest priority for public health, such as carbapenem or extended-spectrum cephalosporin and/or fluoroquinolone-resistant Enterobacterales (including Salmonella enterica), fluoroquinolone-resistant Campylobacter spp., methicillin-resistant Staphylococcus aureus and glycopeptide-resistant Enterococcus faecium and E. faecalis were identified. Among highest priority ARGs bla CTX -M, bla VIM, bla NDM, bla OXA -48-like, bla OXA -23, mcr, armA, vanA, cfr and optrA were reported. These highest priority bacteria and genes were identified in different sources, at primary and post-harvest level, particularly faeces/manure, soil and water. For all sectors, reducing the occurrence of faecal microbial contamination of fertilisers, water, feed and the production environment and minimising persistence/recycling of ARB within animal production facilities is a priority. Proper implementation of good hygiene practices, biosecurity and food safety management systems is very important. Potential AMR-specific interventions are in the early stages of development. Many data gaps relating to sources and relevance of transmission routes, diversity of ARB and ARGs, effectiveness of mitigation measures were identified. Representative epidemiological and attribution studies on AMR and its effective control in food production environments at EU level, linked to One Health and environmental initiatives, are urgently required.
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13
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Validating Thermal Lethality to Salmonella enterica in Chicken Blood by Simulated Commercial Rendering. Microorganisms 2020; 8:microorganisms8122009. [PMID: 33339311 PMCID: PMC7765806 DOI: 10.3390/microorganisms8122009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/08/2020] [Accepted: 12/14/2020] [Indexed: 11/16/2022] Open
Abstract
The U.S. rendering industry produces materials for use in further processed animal foods and feeds and is required to scientifically validate food safety hazard control. This study aimed to provide lethality validation for Salmonella enterica during simulated commercial rendering of whole chicken blood. Chicken blood was inoculated with a blend of multiple serovars of the pathogen (S. Heidelberg, Typhimurium, Senftenberg) and subjected to heating at 82.2, 87.8, or 93.3 °C; surviving cells were enumerated incrementally up to 5.0 min. Survivor data were modeled using the GInaFiT 1.7 freeware package. D-values and t7D (time to a 7.0 log10-cycle inactivation) values were generated from best-fit model parameters. Predictive modeling analysis revealed that the survival curves of Salmonella possessed log-linear components but also possessed shoulder and/or tail components. Mean D-values declined from 0.61 to 0.12 min as heating temperature was raised from 82.2 to 93.3 °F, respectively, differing by heating temperature (p = 0.023). t7D values differed significantly by heating temperature (p = 0.001), as was also the case for shoulder length (SL) (p = <0.0001), where, at lower temperatures, a shoulder was observed versus heating at 93.3 °F. These data aid scientific validation of Salmonella enterica inactivation during thermal rendering of poultry blood for use in further processed animal foods.
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14
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Ricke SC, Dittoe DK, Richardson KE. Formic Acid as an Antimicrobial for Poultry Production: A Review. Front Vet Sci 2020; 7:563. [PMID: 33088825 PMCID: PMC7494846 DOI: 10.3389/fvets.2020.00563] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Accepted: 07/15/2020] [Indexed: 02/06/2023] Open
Abstract
Organic acids continue to receive considerable attention as feed additives for animal production. Most of the emphasis to date has focused on food safety aspects, particularly on lowering the incidence of foodborne pathogens in poultry and other livestock. Several organic acids are currently either being examined or are already being implemented in commercial settings. Among the several organic acids that have been studied extensively, is formic acid. Formic acid has been added to poultry diets as a means to limit Salmonella spp. and other foodborne pathogens both in the feed and potentially in the gastrointestinal tract once consumed. As more becomes known about the efficacy and impact formic acid has on both the host and foodborne pathogens, it is clear that the presence of formic acid can trigger certain pathways in Salmonella spp. This response may become more complex when formic acid enters the gastrointestinal tract and interacts not only with Salmonella spp. that has colonized the gastrointestinal tract but the indigenous microbial community as well. This review will cover current findings and prospects for further research on the poultry microbiome and feeds treated with formic acid.
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Affiliation(s)
- Steven C. Ricke
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
| | - Dana K. Dittoe
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
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15
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Ge B, Domesle KJ, Gaines SA, Lam C, Bodeis Jones SM, Yang Q, Ayers SL, McDermott PF. Prevalence and Antimicrobial Susceptibility of Indicator Organisms Escherichia coli and Enterococcus spp. Isolated from U.S. Animal Food, 2005-2011. Microorganisms 2020; 8:E1048. [PMID: 32679763 PMCID: PMC7409216 DOI: 10.3390/microorganisms8071048] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 07/06/2020] [Accepted: 07/11/2020] [Indexed: 11/16/2022] Open
Abstract
The role animal food plays in the introduction of antimicrobial-resistant bacteria into the human food chain is not well understood. We conducted an analysis of 1025 samples (647 pet food and 378 animal feed) collected across the United States during 2005-2011 for two indicator organisms (Escherichia coli and Enterococcus spp.). The overall prevalence ranged from 12.5% for E. coli to 45.2% for Enterococcus spp., and 11.2% of samples harbored both organisms. Regardless of bacterial genus, animal feed had significantly higher prevalence than pet food (p < 0.001). A general downward trend in prevalence was observed from 2005 to 2009 followed by an upward trend thereafter. Among E. coli isolates (n = 241), resistance was highest to tetracycline (11.2%) and below 5% for fourteen other antimicrobials. Among Enterococcus spp. isolates (n = 1074), Enterococcus faecium (95.1%) was the predominant species. Resistance was most common to tetracycline (30.1%) and ciprofloxacin (10.7%), but below 10% for thirteen other antimicrobials. Multidrug-resistant organisms were observed among both E. coli and Enterococcus spp. isolates at 3.3%. Compared to National Antimicrobial Resistance Monitoring System (NARMS) 2011 retail meat and animal data, the overall resistance for both organisms was much lower in animal food. These findings help establish a historic baseline for the prevalence and antimicrobial resistance among U.S. animal food products and future efforts may be needed to monitor changes over time.
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Affiliation(s)
- Beilei Ge
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, 8401 Muirkirk Road, Laurel, MD 20708, USA; (K.J.D.); (S.A.G.); (C.L.); (S.M.B.J.); (Q.Y.); (S.L.A.); (P.F.M.)
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16
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Parker EM, Edwards LJ, Mollenkopf DF, Ballash GA, Wittum TE, Parker AJ. Salmonella monitoring programs in Australian feed mills: a retrospective analysis. Aust Vet J 2019; 97:336-342. [PMID: 31328262 DOI: 10.1111/avj.12851] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 05/28/2019] [Accepted: 06/06/2019] [Indexed: 11/28/2022]
Abstract
The availability of safe, commercially prepared stock feed for production animals is an important step in ensuring animal health and welfare and the safety of food animal products for human consumption. Animal feed quality assurance programs include microbiological monitoring of raw materials, mill equipment and finished feed. Over a period of 16 years, 23,963 samples for Salmonella culture and serotyping were collected from 22 stock feed mills. A multivariable generalized linear mixed model (GLMM) was used to identify mill and sample type factors that increase the odds of detecting Salmonella. The odds of detecting a Salmonella positive sample was greatest in samples from raw materials and in mills that processed restricted animal material (RAM). The percentage of positive samples ranged from 7.2% in 2003 to 2.8% in 2017. Of the 1,069 positive samples, 976 were serotyped with 61 different Salmonella serotypes isolated. The serotype most frequently isolated from raw materials was S. Agona, (n = 108) whilst S. Anatum was the serotype most frequently isolated from equipment and finished feed (n = 156). The diversity of Salmonella serotypes differed between mills and different stages of the production line. Microbiological monitoring in the commercial preparation of animal feed in Australian stock feed mills guides the implementation of quality control measures and risk mitigation strategies thereby reducing the prevalence and diversity of potentially zoonotic bacteria such as Salmonella, enhancing food safety for both animal and consumer.
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Affiliation(s)
- E M Parker
- The Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, 1680 Madison Avenue Wooster, Ohio, 446911
| | - L J Edwards
- Ridley AgriProducts Pty Ltd, 70-80, Bald Hill Road, Pakenham, Victoria, 3810, Australia
| | - D F Mollenkopf
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920 Coffey Road Columbus, Ohio, 43210
| | - G A Ballash
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920 Coffey Road Columbus, Ohio, 43210
| | - T E Wittum
- The Department of Veterinary Preventive Medicine, The Ohio State University, 1920 Coffey Road Columbus, Ohio, 43210
| | - A J Parker
- The Department of Animal Sciences, Ohio Agricultural Research and Development Center, The Ohio State University, 1680 Madison Avenue Wooster, Ohio, 446911
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17
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Ricke SC, Richardson K, Dittoe DK. Formaldehydes in Feed and Their Potential Interaction With the Poultry Gastrointestinal Tract Microbial Community-A Review. Front Vet Sci 2019; 6:188. [PMID: 31249838 PMCID: PMC6584747 DOI: 10.3389/fvets.2019.00188] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 05/28/2019] [Indexed: 12/27/2022] Open
Abstract
As antibiotics continue to be phased out of livestock production, alternative feed amendments have received increased interest not only from a research standpoint but for commercial application. Most of the emphasis to date has focused on food safety aspects, particularly on lowering the incidence of foodborne pathogens in livestock. Several candidates are currently either being examined or are already being implemented in commercial settings. Among these candidates are chemical compounds such as formaldehyde. Formaldehyde has historically been used to inhibit Salmonella in feeds during feed processing. Currently, there are several commercial products available for this purpose. This review will cover both the historical background, current research, and prospects for further research on the poultry gastrointestinal tract and feeds treated with formaldehyde.
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Affiliation(s)
- Steven C. Ricke
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
| | | | - Dana K. Dittoe
- Department of Food Science, Center of Food Safety, University of Arkansas, Fayetteville, AR, United States
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18
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Ge B, Domesle KJ, Yang Q, Hammack TS, Wang SS, Deng X, Hu L, Zhang G, Hu Y, Lai X, Chou KX, Dollete JR, Hirneisen KA, La SP, Richter RS, Rai DR, Yousefvand AA, Park PK, Wu CH, Eames T, Kiang D, Sheng J, Wu D, Hahn L, Ledger L, Logie C, You Q, Slavic D, Cai H, Ayers SL, Young SR, Pamboukian R. Multi-Laboratory Validation of a Loop-Mediated Isothermal Amplification Method for Screening Salmonella in Animal Food. Front Microbiol 2019; 10:562. [PMID: 30984125 PMCID: PMC6447708 DOI: 10.3389/fmicb.2019.00562] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/05/2019] [Indexed: 11/17/2022] Open
Abstract
Loop-mediated isothermal amplification (LAMP) has gained wide popularity in the detection of Salmonella in foods owing to its simplicity, rapidity, and robustness. This multi-laboratory validation (MLV) study aimed to validate a Salmonella LAMP-based method against the United States Food and Drug Administration (FDA) Bacteriological Analytical Manual (BAM) Chapter 5 Salmonella reference method in a representative animal food matrix (dry dog food). Fourteen independent collaborators from seven laboratories in the United States and Canada participated in the study. Each collaborator received two sets of 24 blind-coded dry dog food samples (eight uninoculated; eight inoculated at a low level, 0.65 MPN/25 g; and eight inoculated at a high level, 3.01 MPN/25 g) and initiated the testing on the same day. The MLV study used an unpaired design where different test portions were analyzed by the LAMP and BAM methods using different preenrichment protocols (buffered peptone water for LAMP and lactose broth for BAM). All LAMP samples were confirmed by culture using the BAM method. BAM samples were also tested by LAMP following lactose broth preenrichment (paired samples). Statistical analysis was carried out by the probability of detection (POD) per AOAC guidelines and by a random intercept logistic regression model. Overall, no significant differences in POD between the Salmonella LAMP and BAM methods were observed with either unpaired or paired samples, indicating the methods were comparable. LAMP testing following preenrichment in buffered peptone water or lactose broth also resulted in insignificant POD differences (P > 0.05). The MLV study strongly supports the utility and applicability of this rapid and reliable LAMP method in routine regulatory screening of Salmonella in animal food.
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Affiliation(s)
- Beilei Ge
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, United States Food and Drug Administration, Laurel, MD, United States
| | - Kelly J. Domesle
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, United States Food and Drug Administration, Laurel, MD, United States
| | - Qianru Yang
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, United States Food and Drug Administration, Laurel, MD, United States
| | - Thomas S. Hammack
- Office of Regulatory Science, Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, College Park, MD, United States
| | - Shizhen S. Wang
- Office of Analytics and Outreach, Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, College Park, MD, United States
| | - Xiaohong Deng
- Office of Regulatory Science, Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, College Park, MD, United States
| | - Lijun Hu
- Office of Regulatory Science, Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, College Park, MD, United States
| | - Guodong Zhang
- Office of Regulatory Science, Center for Food Safety and Applied Nutrition, United States Food and Drug Administration, College Park, MD, United States
| | - Yuan Hu
- Northeast Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Jamaica, NY, United States
| | - Xiaokuang Lai
- Northeast Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Jamaica, NY, United States
| | - Kyson X. Chou
- Pacific Southwest Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Irvine, CA, United States
| | - Jan Ryan Dollete
- Pacific Southwest Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Irvine, CA, United States
| | - Kirsten A. Hirneisen
- Pacific Southwest Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Irvine, CA, United States
| | - Sammie P. La
- Pacific Southwest Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Irvine, CA, United States
| | - Richelle S. Richter
- Pacific Southwest Food and Feed Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Irvine, CA, United States
| | - Diyo R. Rai
- San Francisco Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Alameda, CA, United States
| | - Azadeh A. Yousefvand
- San Francisco Laboratory, Office of Regulatory Affairs, United States Food and Drug Administration, Alameda, CA, United States
| | - Paul K. Park
- Food and Drug Laboratory Branch, California Department of Public Health, Richmond, CA, United States
| | - Cindy H. Wu
- Food and Drug Laboratory Branch, California Department of Public Health, Richmond, CA, United States
| | - Tameji Eames
- Food and Drug Laboratory Branch, California Department of Public Health, Richmond, CA, United States
| | - David Kiang
- Food and Drug Laboratory Branch, California Department of Public Health, Richmond, CA, United States
| | - Ju Sheng
- Office of Indiana State Chemist, Purdue University, West Lafayette, IN, United States
| | - Dancia Wu
- Office of Indiana State Chemist, Purdue University, West Lafayette, IN, United States
| | - Lori Hahn
- Animal Health Laboratory, University of Guelph, Guelph, ON, Canada
| | - Lisa Ledger
- Animal Health Laboratory, University of Guelph, Guelph, ON, Canada
| | - Cynthia Logie
- Animal Health Laboratory, University of Guelph, Guelph, ON, Canada
| | - Qiu You
- Animal Health Laboratory, University of Guelph, Guelph, ON, Canada
| | - Durda Slavic
- Animal Health Laboratory, University of Guelph, Guelph, ON, Canada
| | - Hugh Cai
- Animal Health Laboratory, University of Guelph, Guelph, ON, Canada
| | - Sherry L. Ayers
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, United States Food and Drug Administration, Laurel, MD, United States
| | - Shenia R. Young
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, United States Food and Drug Administration, Laurel, MD, United States
| | - Ruiqing Pamboukian
- Office of Regulatory Science, Office of Regulatory Affairs, United States Food and Drug Administration, Rockville, MD, United States
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Koutsoumanis K, Allende A, Alvarez-Ordóñez A, Bolton D, Bover-Cid S, Chemaly M, De Cesare A, Herman L, Hilbert F, Lindqvist R, Nauta M, Peixe L, Ru G, Simmons M, Skandamis P, Suffredini E, Dewulf J, Hald T, Michel V, Niskanen T, Ricci A, Snary E, Boelaert F, Messens W, Davies R. Salmonella control in poultry flocks and its public health impact. EFSA J 2019; 17:e05596. [PMID: 32626222 PMCID: PMC7009056 DOI: 10.2903/j.efsa.2019.5596] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
An increase in confirmed human salmonellosis cases in the EU after 2014 triggered investigation of contributory factors and control options in poultry production. Reconsideration of the five current target serovars for breeding hens showed that there is justification for retaining Salmonella Enteritidis, Salmonella Typhimurium (including monophasic variants) and Salmonella Infantis, while Salmonella Virchow and Salmonella Hadar could be replaced by Salmonella Kentucky and either Salmonella Heidelberg, Salmonella Thompson or a variable serovar in national prevalence targets. However, a target that incorporates all serovars is expected to be more effective as the most relevant serovars in breeding flocks vary between Member State (MS) and over time. Achievement of a 1% target for the current target serovars in laying hen flocks is estimated to be reduced by 254,400 CrI95[98,540; 602,700] compared to the situation in 2016. This translates to a reduction of 53.4% CrI95[39.1; 65.7] considering the layer-associated human salmonellosis true cases and 6.2% considering the overall human salmonellosis true cases in the 23 MSs included in attribution modelling. A review of risk factors for Salmonella in laying hens revealed that overall evidence points to a lower occurrence in non-cage compared to cage systems. A conclusion on the effect of outdoor access or impact of the shift from conventional to enriched cages could not be reached. A similar review for broiler chickens concluded that the evidence that outdoor access affects the occurrence of Salmonella is inconclusive. There is conclusive evidence that an increased stocking density, larger farms and stress result in increased occurrence, persistence and spread of Salmonella in laying hen flocks. Based on scientific evidence, an impact of Salmonella control programmes, apart from general hygiene procedures, on the prevalence of Campylobacter in broiler flocks at the holding and on broiler meat at the end of the slaughter process is not expected.
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Grassotti TT, de Angelis Zvoboda D, da Fontoura Xavier Costa L, de Araújo AJG, Pereira RI, Soares RO, Wagner PGC, Frazzon J, Frazzon APG. Antimicrobial Resistance Profiles in Enterococcus spp. Isolates From Fecal Samples of Wild and Captive Black Capuchin Monkeys (S apajus nigritus) in South Brazil. Front Microbiol 2018; 9:2366. [PMID: 30356681 PMCID: PMC6189294 DOI: 10.3389/fmicb.2018.02366] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2018] [Accepted: 09/14/2018] [Indexed: 11/13/2022] Open
Abstract
The environment, human, and animals play an important role in the spread of antibiotic-resistant bacteria. Enterococci are members of the gastrointestinal tracts of humans and animals and represent important reservoirs of antibiotic resistance genes. Until today, few studies have examined antibiotic susceptibility in enterococci isolated from primates. Therefore, the present study investigated species distribution, antibiotic susceptibility, and resistance genes in enterococci isolated from wild and captive black capuchins monkeys (Sapajus nigritus) in Rio Grande do Sul, South Brazil. A total of 24 swabs/fecal samples were collected, including 19 from wild monkeys living in two forest fragments [São Sebastião do Caí (SSC) and Santa Cruz do Sul (SCS)], and five in captive [Parque Zoológico da Fundação Zoobotânica (ZOO)], between August 2016 and November 2017. Fifteen colonies were randomly selected from each sample. Enterococci were identified by MALDI-TOF, tested for susceptibility to 12 antibiotics; and screened for tet(S), tet(M), tet(L), msrC, and erm(B) genes by PCR. Two-hundred ninety-six enterococci were isolated (SSC n = 137; SCS n = 86; ZOO n = 73) and differences in Enterococcus species distribution were detected on three monkey groups, with low abundance in SCS (1 - D = 0.2), followed by ZOO (1 - D = 0.68), and SSC (1 - D = 0.73). The enterococci frequently recovered include the following: Enterococcus faecalis (42.6%), E. hirae (29.1%), and E. faecium (15.9%). Antibiotic-nonsusceptible was observed in 202 (67.9%) strains. The rate of non-susceptibility to rifampicin, tetracycline, erythromycin, nitrofurantoin, chloramphenicol, and ampicillin was 46%, 26%, 22% and 19%, 13%, 0.3%, and 0.3%, respectively. All strains were susceptible to vancomycin, streptomycin, gentamycin, and linezolid. Forty-three (14.52%) isolates were identified as multidrug resistant (MDR), and the highest number of MDR enterococci were E. faecium recovered from wild monkeys living close to a hospital and water treatment plant. Elevated rates of antibiotic resistance genes msrC and tet(L) were isolates from ZOO. In conclusion, differences in the frequency of enterococci species, antibiotic-nonsusceptible and antibiotic resistance genes in all groups of monkeys were identified. These data suggest that anthropogenic activities could have an impact in the resistome of primate gut enterococci communities.
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Affiliation(s)
- Tiela Trapp Grassotti
- Microbiology, Immunology, and Parasitology Department, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Dejoara de Angelis Zvoboda
- Microbiology, Immunology, and Parasitology Department, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Letícia da Fontoura Xavier Costa
- Microbiology, Immunology, and Parasitology Department, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Alberto Jorge Gomes de Araújo
- Microbiology, Immunology, and Parasitology Department, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Rebeca Inhoque Pereira
- Gram-Positive Cocci Laboratory, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | - Renata Oliveira Soares
- Gram-Positive Cocci Laboratory, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Brazil
| | | | - Jeverson Frazzon
- Institute of Food Science and Technology, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Ana Paula Guedes Frazzon
- Microbiology, Immunology, and Parasitology Department, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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21
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Physical and Chemical Methods for the Reduction of Biological Hazards in Animal Feeds. FOOD AND FEED SAFETY SYSTEMS AND ANALYSIS 2018. [PMCID: PMC7149496 DOI: 10.1016/b978-0-12-811835-1.00005-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Feed for livestock animals have been under increased scrutiny as a vector for pathogenic bacteria leading to human illnesses. Control of these pathogenic bacteria in animal feeds can be controlled via physical and chemical means. Physical methods can include thermal processing, including irradiation, pelleting, and extrusion. Chemical mitigation can be accomplished through the inclusion of various additives, including formaldehyde, organic acids, essential oils, or medium chain fatty acids. While physical and chemical interventions can help mitigate risk of pathogens contaminating finished animal feeds, the implementation of a biosecurity plan at the feed mill can help prevent pathogens from entering or spreading throughout the facility.
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22
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Domesle KJ, Yang Q, Hammack TS, Ge B. Validation of a Salmonella loop-mediated isothermal amplification assay in animal food. Int J Food Microbiol 2017; 264:63-76. [PMID: 29121500 DOI: 10.1016/j.ijfoodmicro.2017.10.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 10/12/2017] [Accepted: 10/16/2017] [Indexed: 12/18/2022]
Abstract
Loop-mediated isothermal amplification (LAMP) has emerged as a promising alternative to PCR for pathogen detection in food testing and clinical diagnostics. This study aimed to validate a Salmonella LAMP method run on both turbidimetry (LAMP I) and fluorescence (LAMP II) platforms in representative animal food commodities. The U.S. Food and Drug Administration (FDA)'s culture-based Bacteriological Analytical Manual (BAM) method was used as the reference method and a real-time quantitative PCR (qPCR) assay was also performed. The method comparison study followed the FDA's microbiological methods validation guidelines, which align well with those from the AOAC International and ISO. Both LAMP assays were 100% specific among 300 strains (247 Salmonella of 185 serovars and 53 non-Salmonella) tested. The detection limits ranged from 1.3 to 28 cells for six Salmonella strains of various serovars. Six commodities consisting of four animal feed items (cattle feed, chicken feed, horse feed, and swine feed) and two pet food items (dry cat food and dry dog food) all yielded satisfactory results. Compared to the BAM method, the relative levels of detection (RLODs) for LAMP I ranged from 0.317 to 1 with a combined value of 0.610, while those for LAMP II ranged from 0.394 to 1.152 with a combined value of 0.783, which all fell within the acceptability limit (2.5) for an unpaired study. This also suggests that LAMP was more sensitive than the BAM method at detecting low-level Salmonella contamination in animal food and results were available 3days sooner. The performance of LAMP on both platforms was comparable to that of qPCR but notably faster, particularly LAMP II. Given the importance of Salmonella in animal food safety, the LAMP assays validated in this study holds great promise as a rapid, reliable, and robust method for routine screening of Salmonella in these commodities.
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Affiliation(s)
- Kelly J Domesle
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, 8401 Muirkirk Road, Laurel, MD 20708, USA
| | - Qianru Yang
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, 8401 Muirkirk Road, Laurel, MD 20708, USA
| | - Thomas S Hammack
- Division of Microbiology, Office of Regulatory Science, Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, 5001 Campus Drive, College Park, MD 20740, USA
| | - Beilei Ge
- Division of Animal and Food Microbiology, Office of Research, Center for Veterinary Medicine, U.S. Food and Drug Administration, 8401 Muirkirk Road, Laurel, MD 20708, USA.
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23
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Visscher CF, Abd El-Wahab A, Ahmed MFE, Hankel J, Taube V, Kamphues J. Influence of different protein sources in the broiler diet on the presence ofCampylobacterspp. in excreta and caecal content. J Anim Physiol Anim Nutr (Berl) 2017. [DOI: 10.1111/jpn.12733] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- C. F. Visscher
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
| | - A. Abd El-Wahab
- Department of Nutrition and Nutritional Deficiency Diseases; Faculty of Veterinary Medicine; Mansoura University; Mansoura Egypt
| | - M. F. E. Ahmed
- Department of Hygiene and Zoonoses; Faculty of Veterinary Medicine; Mansoura University; Mansoura Egypt
| | - J. Hankel
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
| | - V. Taube
- BEST 3 Geflügelernährung GmbH; Twistringen Germany
| | - J. Kamphues
- Institute for Animal Nutrition; University of Veterinary Medicine Hannover, Foundation; Hannover Germany
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24
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McCrackin MA, Helke KL, Galloway AM, Poole AZ, Salgado CD, Marriott BP. Effect of Antimicrobial Use in Agricultural Animals on Drug-resistant Foodborne Campylobacteriosis in Humans: A Systematic Literature Review. Crit Rev Food Sci Nutr 2017; 56:2115-32. [PMID: 26580432 DOI: 10.1080/10408398.2015.1119798] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Controversy continues concerning antimicrobial use in food animals and its relationship to drug-resistant infections in humans. We systematically reviewed published literature for evidence of a relationship between antimicrobial use in agricultural animals and drug-resistant foodborne campylobacteriosis in humans. Based on publications from the United States (U.S.), Canada and Denmark from 2010 to July 2014, 195 articles were retained for abstract review, 50 met study criteria for full article review with 36 retained for which data are presented. Two publications reported increase in macrolide resistance of Campylobacter coli isolated from feces of swine receiving macrolides in feed, and one of these described similar findings for tetracyclines and fluoroquinolones. A study in growing turkeys demonstrated increased macrolide resistance associated with therapeutic dosing with Tylan® in drinking water. One publication linked tetracycline-resistant C. jejuni clone SA in raw cow's milk to a foodborne outbreak in humans. No studies that identified farm antimicrobial use also traced antimicrobial-resistant Campylobacter from farm to fork. Recent literature confirms that on farm antibiotic selection pressure can increase colonization of animals with drug-resistant Campylobacter spp. but is inadequately detailed to establish a causal relationship between use of antimicrobials in agricultural animals and prevalence of drug-resistant foodborne campylobacteriosis in humans.
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Affiliation(s)
- M A McCrackin
- a Ralph H. Johnson VA Medical Center Research Service , Charleston , South Carolina , USA.,b Department of Comparative Medicine , College of Medicine, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Kristi L Helke
- b Department of Comparative Medicine , College of Medicine, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Ashley M Galloway
- c Nutrition Section, Division of Gastroenterology and Hepatology, Department of Medicine, and Military Division, Department of Psychiatry, College of Medicine, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Ann Z Poole
- c Nutrition Section, Division of Gastroenterology and Hepatology, Department of Medicine, and Military Division, Department of Psychiatry, College of Medicine, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Cassandra D Salgado
- d Division of Infectious Diseases, Department of Medicine, College of Medicine, Medical University of South Carolina , Charleston , South Carolina , USA
| | - Bernadette P Marriott
- c Nutrition Section, Division of Gastroenterology and Hepatology, Department of Medicine, and Military Division, Department of Psychiatry, College of Medicine, Medical University of South Carolina , Charleston , South Carolina , USA
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25
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Abstract
A microbiological investigation on Salmonella contamination was conducted in two U.S. rendering plants to investigate the potential cross-contamination of Salmonella in the rendering processing environment. Sampling locations were predetermined at the areas where Salmonella contamination may potentially occur, including raw materials receiving, crax (rendered materials before grinding process) grinding, and finished meal loading-out areas. Salmonella was either enumerated directly on xylose lysine Tergitol 4 agar plates or enriched in Rappaport-Vassiliadis and tetrathionate broths. The presumptive Salmonella isolates were confirmed using CHROMagar plating and latex agglutination testing and then characterized using pulsed-field gel electrophoresis, serotyping, and biofilm-forming determination. Among 108 samples analyzed, 79 (73%) samples were Salmonella positive after enrichment. Selected Salmonella isolates (n = 65) were assigned to 31 unique pulsed-field gel electrophoresis patterns, with 16 Salmonella serotypes, including Typhimurium and Mbandaka, identified as predominant serotypes and 10 Salmonella strains determined as strong biofilm formers. Our results indicated that the raw materials receiving area was the primary source of Salmonella and that the surfaces surrounding crax grinding and finished meal loading-out areas harbor Salmonella in biofilms that may recontaminate the finished meals. The same Salmonella serotypes found in both raw materials receiving and the finished meal loading-out areas suggested a potential of cross-contamination between different areas in the rendering processing environment.
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Affiliation(s)
- Chao Gong
- Department of Biological Sciences, Clemson University, Clemson, South Carolina 29634, USA
| | - Xiuping Jiang
- Department of Food, Nutrition, and Packaging Sciences, Clemson University, Clemson, South Carolina 29634, USA
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26
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Rajan K, Shi Z, Ricke SC. Current aspects ofSalmonellacontamination in the US poultry production chain and the potential application of risk strategies in understanding emerging hazards. Crit Rev Microbiol 2016; 43:370-392. [DOI: 10.1080/1040841x.2016.1223600] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Kalavathy Rajan
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR, USA
| | - Zhaohao Shi
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR, USA
| | - Steven C. Ricke
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR, USA
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27
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Jiang X. Prevalence and Characterization of Salmonella in Animal Meals Collected from Rendering Operations. J Food Prot 2016; 79:1026-31. [PMID: 27296608 DOI: 10.4315/0362-028x.jfp-15-537] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
As part of the Salmonella Education Reduction Program, the Animal Protein Producers Industry initiated a yearlong microbiological survey of animal meals from 1 January to 31 December 2010. The types of animal meals included poultry meal, pork and beef crax, meat meal, meat and bone meal, feather meal, blood meal, and fish meal from a variety of rendering operations (n = 65). Salmonella was positive in 731 (8.3%) of 8,783 analyzed samples, with contamination rates as 1.0, 33.2, and 21.3% from samples collected right after press, being loaded out, or unidentified, respectively. The randomly selected positive Salmonella samples (n = 100) representing 1.1% of the total samples tested were enumerated by the most-probable-number (MPN) method. The Salmonella contamination level ranged from <0.03 (below the detection limit) to 240 MPN/g with a median MPN per gram of 0.036. Among 102 Salmonella isolates from those 100 positive samples, a total of 42 Salmonella serotypes or groups were identified with Montevideo (13%), Senftenberg (11%), Mbandaka (7%), Orion (7%), Livingstone (6%), Tennessee (4%), Infantis (4%), Cerro (4%), and group C1 (4%) as the most predominant ones. Those Salmonella isolates were further analyzed for antimicrobial resistance to the 15 most common antibiotics by using the National Antimicrobial Resistance Monitoring System gram-negative plate. Most Salmonella isolates (n = 94) were sensitive to all antibiotics tested, with seven isolates resistant to one antibiotic and one resistant to seven antibiotics. Clearly, the prevalence of Salmonella in animal meals declined compared with previous surveys, and none of the Salmonella serotypes concerning target animal health were isolated. In addition, most Salmonella isolates remained susceptible to the majority of the 15 most commonly used antibiotics.
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Affiliation(s)
- Xiuping Jiang
- Department of Food, Nutrition and Packaging Sciences, Clemson University, 228A Life Science Facility, Clemson, South Carolina 29634, USA.
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28
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Pandey PK, Biswas S, Kass P. Microbial pathogen quality criteria of rendered products. Appl Microbiol Biotechnol 2016; 100:5247-55. [PMID: 27121572 DOI: 10.1007/s00253-016-7561-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2016] [Revised: 04/12/2016] [Accepted: 04/15/2016] [Indexed: 10/21/2022]
Abstract
The North American rendering industry processes approximately 24 million metric tons (Mt) of raw materials and produces more than 8 million Mt of rendered products. More than 85 % of rendered products produced annually in the USA are used for producing animal feed. Pathogen contamination in rendered products is an important and topical issue. Although elevated temperatures (115-140 °C) for 40-90 min during the standard rendering processes are mathematically sufficient to completely destroy commonly found pathogens, the presence of pathogens in rendered products has nevertheless been reported. Increased concern over the risk of microbial contamination in rendered products may require additional safeguards for producing pathogen-free rendered products. This study provides an overview of rendered products, existing microbial pathogen quality criteria of rendered products (MPQCR), limitations, and the scope of improving the MPQCR.
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Affiliation(s)
- Pramod K Pandey
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA. .,University of California, Division of Agriculture and Natural Resources, UC Cooperative Extension, Davis, CA, 95616, USA.
| | - Sagor Biswas
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA
| | - Philip Kass
- Department of Population Health and Reproduction, School of Veterinary Medicine, University of California Davis, Davis, CA, 95616, USA
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29
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Hsieh YC, Poole TL, Runyon M, Hume M, Herrman TJ. Prevalence of Nontyphoidal Salmonella and Salmonella Strains with Conjugative Antimicrobial-Resistant Serovars Contaminating Animal Feed in Texas. J Food Prot 2016; 79:194-204. [PMID: 26818979 DOI: 10.4315/0362-028x.jfp-15-163] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The objective of this study was to characterize 365 nontyphoidal Salmonella enterica isolates from animal feed. Among the 365 isolates, 78 serovars were identified. Twenty-four isolates (7.0%) were recovered from three of six medicated feed types. Three of these isolates derived from the medicated feed, Salmonella Newport, Salmonella Typhimurium var. O 5- (Copenhagen), and Salmonella Lexington var. 15+ (Manila), displayed antimicrobial resistance. Susceptibility testing revealed that only 3.0% (12) of the 365 isolates displayed resistance to any of the antimicrobial agents. These 12 isolates were recovered from unmedicated dry beef feed (n = 3), medicated dry beef feed (n = 3), cabbage culls (n = 2), animal protein products (n = 2), dry dairy cattle feed (n = 1), and fish meal (n = 1). Only Salmonella Newport and Salmonella Typhimurium var. O 5- (Copenhagen) were multidrug resistant. Both isolates possessed the IncA/C replicon and the blaCMY-2 gene associated with cephalosporin resistance. Plasmid replicons were amplified from 4 of 12 resistant isolates. Plasmids (40 kb) were Salmonella Montevideo and Salmonella Kentucky. Conjugation experiments were done using 7 of the 12 resistant isolates as donors. Only Salmonella Montevideo, possessing a plasmid and amplifying IncN, produced transconjugants. Transconjugants displayed the same antimicrobial resistance profile as did the donor isolate. Three isolates that amplified replicons corresponding to IncA/C or IncHI2 did not produce transconjugants at 30 or 37°C. The results of this study suggest that the prevalence of antimicrobial-resistant Salmonella contaminating animal feed is low in Texas. However, Salmonella was more prevalent in feed by-products; fish meal had the highest prevalence (84%) followed by animal protein products (48%). Ten of the 35 feed types had no Salmonella contamination. Further investigation is needed to understand the possible role of specific feed types in the dissemination of antimicrobial resistant bacteria.
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Affiliation(s)
- Yi-Cheng Hsieh
- Office of the Texas State Chemist, Texas Agricultural Experiment Station, Texas A&M University System, College Station, Texas 77843, USA.
| | - Toni L Poole
- U.S. Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, College Station, Texas 77845, USA
| | - Mick Runyon
- Office of the Texas State Chemist, Texas Agricultural Experiment Station, Texas A&M University System, College Station, Texas 77843, USA
| | - Michael Hume
- U.S. Department of Agriculture, Agricultural Research Service, Southern Plains Agricultural Research Center, College Station, Texas 77845, USA
| | - Timothy J Herrman
- Office of the Texas State Chemist, Texas Agricultural Experiment Station, Texas A&M University System, College Station, Texas 77843, USA
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30
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Characterization of antimicrobial resistance in Salmonella enterica strains isolated from Brazilian poultry production. Antonie van Leeuwenhoek 2015; 108:1227-38. [DOI: 10.1007/s10482-015-0577-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 08/28/2015] [Indexed: 01/01/2023]
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31
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Lambertini E, Buchanan RL, Narrod C, Pradhan AK. Transmission of Bacterial Zoonotic Pathogens between Pets and Humans: The Role of Pet Food. Crit Rev Food Sci Nutr 2015; 56:364-418. [DOI: 10.1080/10408398.2014.902356] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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32
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Application of Molecular Approaches for Understanding Foodborne Salmonella Establishment in Poultry Production. ACTA ACUST UNITED AC 2014. [DOI: 10.1155/2014/813275] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Salmonellosis in the United States is one of the most costly foodborne diseases. Given that Salmonella can originate from a wide variety of environments, reduction of this organism at all stages of poultry production is critical. Salmonella species can encounter various environmental stress conditions which can dramatically influence their survival and colonization. Current knowledge of Salmonella species metabolism and physiology in relation to colonization is traditionally based on studies conducted primarily with tissue culture and animal infection models. Consequently, while there is some information about environmental signals that control Salmonella growth and colonization, much still remains unknown. Genetic tools for comprehensive functional genomic analysis of Salmonella offer new opportunities for not only achieving a better understanding of Salmonella pathogens but also designing more effective intervention strategies. Now the function(s) of each single gene in the Salmonella genome can be directly assessed and previously unknown genetic factors that are required for Salmonella growth and survival in the poultry production cycle can be elucidated. In particular, delineating the host-pathogen relationships involving Salmonella is becoming very helpful for identifying optimal targeted gene mutagenesis strategies to generate improved vaccine strains. This represents an opportunity for development of novel vaccine approaches for limiting Salmonella establishment in early phases of poultry production. In this review, an overview of Salmonella issues in poultry, a general description of functional genomic technologies, and their specific application to poultry vaccine developments are discussed.
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33
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Sapkota AR, Kinney EL, George A, Hulet RM, Cruz-Cano R, Schwab KJ, Zhang G, Joseph SW. Lower prevalence of antibiotic-resistant Salmonella on large-scale U.S. conventional poultry farms that transitioned to organic practices. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 476-477:387-392. [PMID: 24486494 DOI: 10.1016/j.scitotenv.2013.12.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 12/02/2013] [Accepted: 12/02/2013] [Indexed: 06/03/2023]
Abstract
As a result of the widespread use of antibiotics in large-scale U.S. poultry production, a significant proportion of Salmonella strains recovered from conventional poultry farms and retail poultry products express antibiotic resistance. We evaluated whether large-scale poultry farms that transitioned from conventional to organic practices and discontinued antibiotic use were characterized by differences in the prevalence of antibiotic-resistant Salmonella compared to farms that maintained conventional practices. We collected poultry litter, water and feed samples from 10 newly organic and 10 conventional poultry houses. Samples were analyzed for Salmonella using standard enrichment methods. Isolates were confirmed using standard biochemical tests and the Vitek®2 Compact System. Antimicrobial susceptibility testing was performed by Sensititre® microbroth dilution. Data were analyzed using Fisher's exact test and generalized linear mixed models. We detected Salmonella in both conventional and newly organic poultry houses. Salmonella Kentucky was the predominant serovar identified, followed by S. Orion, S. Enteritidis, S. Gostrup and S. Infantis. Among S. Kentucky isolates (n=41), percent resistance was statistically significantly lower among isolates recovered from newly organic versus conventional poultry houses for: amoxicillin-clavulanate (p=0.049), ampicillin (p=0.042), cefoxitin (p=0.042), ceftiofur (p=0.043) and ceftriaxone (p=0.042). Percent multidrug resistance (resistance to ≥3 antimicrobial classes) was also statistically significantly lower among S. Kentucky isolates recovered from newly organic poultry houses (6%) compared to those recovered from conventional houses (44%) (p=0.015). To our knowledge, these are the first U.S. data to show immediate, on-farm changes in the prevalence of antibiotic-resistant Salmonella when antibiotics are voluntarily withdrawn from large-scale poultry facilities in the United States.
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Affiliation(s)
- Amy R Sapkota
- Maryland Institute for Applied Environmental Health, University of Maryland, School of Public Health, College Park, MD, United States.
| | - Erinna L Kinney
- Maryland Institute for Applied Environmental Health, University of Maryland, School of Public Health, College Park, MD, United States
| | - Ashish George
- Maryland Institute for Applied Environmental Health, University of Maryland, School of Public Health, College Park, MD, United States
| | - R Michael Hulet
- Department of Animal Science, Pennsylvania State University, University Park, PA, United States
| | - Raul Cruz-Cano
- Department of Epidemiology and Biostatistics, University of Maryland, School of Public Health, College Park, MD, United States
| | - Kellogg J Schwab
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States
| | - Guangyu Zhang
- Department of Epidemiology and Biostatistics, University of Maryland, School of Public Health, College Park, MD, United States
| | - Sam W Joseph
- Maryland Institute for Applied Environmental Health, University of Maryland, School of Public Health, College Park, MD, United States; Department of Cell Biology and Molecular Genetics, University of Maryland College Park, College Park, MD, United States
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34
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Technical specifications on harmonised epidemiological indicators for biological hazards to be covered by meat inspection of bovine animals. EFSA J 2013. [DOI: 10.2903/j.efsa.2013.3276] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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