1
|
Wongkuna S, Ambat A, Ghimire S, Mattiello SP, Maji A, Kumar R, Antony L, Chankhamhaengdecha S, Janvilisri T, Nelson E, Doerner KC, More S, Behr M, Scaria J. Identification of a microbial sub-community from the feral chicken gut that reduces Salmonella colonization and improves gut health in a gnotobiotic chicken model. Microbiol Spectr 2024; 12:e0162123. [PMID: 38315031 PMCID: PMC10913435 DOI: 10.1128/spectrum.01621-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 12/16/2023] [Indexed: 02/07/2024] Open
Abstract
A complex microbial community in the gut may prevent the colonization of enteric pathogens such as Salmonella. Some individual or a combination of species in the gut may confer colonization resistance against Salmonella. To gain a better understanding of the colonization resistance against Salmonella enterica, we isolated a library of 1,300 bacterial strains from feral chicken gut microbiota which represented a total of 51 species. Using a co-culture assay, we screened the representative species from this library and identified 30 species that inhibited Salmonella enterica subspecies enterica serovar Typhimurium in vitro. To improve the Salmonella inhibition capacity, from a pool of fast-growing species, we formulated 66 bacterial blends, each of which composed of 10 species. Bacterial blends were more efficient in inhibiting Salmonella as compared to individual species. The blend that showed maximum inhibition (Mix10) also inhibited other serotypes of Salmonella frequently found in poultry. The in vivo effect of Mix10 was examined in a gnotobiotic and conventional chicken model. The Mix10 consortium significantly reduced Salmonella load at day 2 post-infection in gnotobiotic chicken model and decreased intestinal tissue damage and inflammation in both models. Cell-free supernatant of Mix10 did not show Salmonella inhibition, indicating that Mix10 inhibits Salmonella through either nutritional competition, competitive exclusion, or through reinforcement of host immunity. Out of 10 species, 3 species in Mix10 did not colonize, while 3 species constituted more than 70% of the community. Two of these species were previously uncultured bacteria. Our approach could be used as a high-throughput screening system to identify additional bacterial sub-communities that confer colonization resistance against enteric pathogens and its effect on the host.IMPORTANCESalmonella colonization in chicken and human infections originating from Salmonella-contaminated poultry is a significant problem. Poultry has been identified as the most common food linked to enteric pathogen outbreaks in the United States. Since multi-drug-resistant Salmonella often colonize chicken and cause human infections, methods to control Salmonella colonization in poultry are needed. The method we describe here could form the basis of developing gut microbiota-derived bacterial blends as a microbial ecosystem therapeutic against Salmonella.
Collapse
Affiliation(s)
- Supapit Wongkuna
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Achuthan Ambat
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
- Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Sudeep Ghimire
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Samara Paula Mattiello
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Abhijit Maji
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Roshan Kumar
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Linto Antony
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | | | - Tavan Janvilisri
- Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Eric Nelson
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Kinchel C. Doerner
- Department of Biology and Microbiology, South Dakota State University, Brookings, South Dakota, USA
| | - Sunil More
- Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, Oklahoma, USA
| | - Melissa Behr
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
| | - Joy Scaria
- Department of Veterinary and Biomedical Sciences, South Dakota State University, Brookings, South Dakota, USA
- Department of Veterinary Pathobiology, Oklahoma State University, Stillwater, Oklahoma, USA
| |
Collapse
|
2
|
McWhorter AR, Weerasooriya G, Kumar S, Chousalkar KK. Comparison of peroxyacetic acid and acidified sodium chlorite at reducing natural microbial contamination on chicken meat pieces. Poult Sci 2023; 102:103009. [PMID: 37672838 PMCID: PMC10494258 DOI: 10.1016/j.psj.2023.103009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 08/03/2023] [Accepted: 08/03/2023] [Indexed: 09/08/2023] Open
Abstract
The spin-chill process at poultry processing plants involves the immersion of chicken carcasses in cold water (<5°C) often containing sodium hypochlorite which significantly contributes to the reduction of bacterial loads. Cutting carcasses into pieces, however, has been linked with increases in Campylobacter and Salmonella counts. Here, the efficacy of PAA and ASC on reducing bacteria on skin-on, bone-in thigh cuts was investigated. Three concentrations of ASC (60, 112, and 225 ppm) and PAA (50, 75, 100 ppm) were used. Thighs were dipped into sanitizer and tested for total viable bacterial counts, Campylobacter load, and prevalence of Salmonella. The efficacy of PAA and ASC was also compared with chlorine (8 ppm). All sanitizers exhibited a greater log reduction compared with water. PAA at both 75 and 100 ppm resulted in significantly higher log reductions compared with the water only. PAA at 100 ppm and 225 ppm ASC were the most effective at reducing Campylobacter. All wash treatments reduced the proportion of Salmonella positive samples, but the greatest reduction was observed for 225 ppm ASC. Both concentrations of ASC resulted in a greater reduction in total viable counts compared with chlorine.
Collapse
Affiliation(s)
- Andrea R McWhorter
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, South Australia 5371, Australia
| | - Gayani Weerasooriya
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, South Australia 5371, Australia
| | - Shruti Kumar
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, South Australia 5371, Australia
| | - Kapil K Chousalkar
- School of Animal and Veterinary Sciences, University of Adelaide, Roseworthy, South Australia 5371, Australia.
| |
Collapse
|
3
|
Vaccinating Meat Chickens against Campylobacter and Salmonella: A Systematic Review and Meta-Analysis. Vaccines (Basel) 2022; 10:vaccines10111936. [PMID: 36423031 PMCID: PMC9692956 DOI: 10.3390/vaccines10111936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/11/2022] [Accepted: 11/12/2022] [Indexed: 11/17/2022] Open
Abstract
Foodborne enteritis is a major disease burden globally. Two of the most common causative bacterial enteropathogens in humans are Campylobacter and Salmonella species which are strongly associated with the consumption of raw or contaminated chicken. The poultry industry has approached this issue by use of a multi-hurdle method across the production chain to reduce or eliminate this risk. The use of poultry vaccines is one of these control methods. A systematic review and meta-analysis of vaccination effects against caecal Campylobacter and Salmonella were performed on primary research published between 2009 and 2022. Screening was conducted by three reviewers with one reviewer performing subsequent data extraction and one reviewer performing the risk of bias assessment. The confidence in cumulative evidence was evaluated based on the GRADE method. Meta-analyses were performed using standardised mean differences (SMDs) with additional analyses and random effects regression models on intervention effects grouped by the vaccine type. A total of 13 Campylobacter and 19 Salmonella studies satisfied the eligibility criteria for this review. Many studies included multi-arm interventions, resulting in a total of 25 Campylobacter and 34 Salmonella comparators which were synthesised. The analyses revealed a large reduction in pathogen levels; however, many effects required statistical adjustment due to unit of analysis errors. There was a moderate level of confidence in the reduction of Campylobacter by 0.93 SMD units (95% CI: −1.275 to −0.585; p value < 0.001) and a very low level of confidence in the reduction of Salmonella by 1.10 SMD units (95% CI: −1.419 to −0.776; p value < 0.001). The Chi2 test for heterogeneity (p value 0.001 and <0.001 for Campylobacter and Salmonella, respectively) and the I2 statistic (52.4% and 77.5% for Campylobacter and Salmonella, respectively) indicated high levels of heterogeneity in the SMDs across the comparators. The certainty of gathered evidence was also affected by a high risk of study bias mostly due to a lack of detailed reporting and, additionally for Salmonella, the presence of publication bias. Further research is recommended to source areas of heterogeneity, and a conscious effort to follow reporting guidelines and consider units of analysis can improve the strength of evidence gathered to provide recommendations to the industry.
Collapse
|
4
|
Zhang X, Song M, Lv P, Hao G, Sun S. Effects of Clostridium butyricum on intestinal environment and gut microbiome under Salmonella infection. Poult Sci 2022; 101:102077. [PMID: 36067578 PMCID: PMC9468503 DOI: 10.1016/j.psj.2022.102077] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/12/2022] [Accepted: 07/19/2022] [Indexed: 11/10/2022] Open
Abstract
Salmonellosis causes massive economic losses globally every year. Especially in poultry, numerous drug-resistant bacteria have emerged; thus, it is imperative to find alternatives to antibiotics. As a probiotic, Clostridium butyricum (C. butyricum) provides the latest strategy for inhibiting the proliferation of Salmonella. This study aimed to evaluate the effects of C. butyricum on intestinal environment and gut microbiome under Salmonella infection. In this study, we modeled the infection of Salmonella using specific pathogen-free (SPF) chicks and found that the use of C. butyricum directly reduced the number of Salmonella colonizations in the spleen and liver. It also alleviated the histopathological changes of the liver, spleen, and cecum caused by Salmonella Enteritidis (S. Enteritidis). In addition, S. Enteritidis increased the expression of pro-inflammatory IL-6 in the cecum on day 6 postinfection. Interestingly, we found that C. butyricum changed PPAR-γ transcript levels in the cecum on day 6 postinfection. Analysis of the chick gastrointestinal microbiome showed that Salmonella infection increased the relative abundance of Subdoligranulum variabile. Further analysis found that Salmonella challenge significantly reduced the relative abundance of Faecalibacterium prausnitzii and C. butyricum increased the relative abundance of anaerobic bacteria in the gut on day 6 postinfection. Moreover, early supplementation of C. butyricum restored the epithelial hypoxia in S. Enteritidis infection in chicks. The results suggest that C. butyricum restores epithelial hypoxia caused by S. Enteritidis, improves the stability of intestinal flora, and inhibits the proliferation of Salmonella.
Collapse
|
5
|
McWhorter AR, Weerasooriya G, Willson NL, Chousalkar KK. Peroxyacetic acid and acidified sodium chlorite reduce microbial contamination on whole chicken carcasses obtained from two processing points. Food Microbiol 2022; 106:104035. [DOI: 10.1016/j.fm.2022.104035] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 03/29/2022] [Accepted: 03/30/2022] [Indexed: 12/29/2022]
|
6
|
Chaney WE, Englishbey AK, Stephens TP, Applegate SF, Sanchez-Plata MX. Application of a Commercial Salmonella Real-Time PCR Assay for the Detection and Quantitation of Salmonella enterica in Poultry Ceca. J Food Prot 2022; 85:527-533. [PMID: 34914838 DOI: 10.4315/jfp-21-285] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 12/14/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT Foodborne salmonellosis is commonly associated with poultry and poultry products, necessitating continued development of pre- and postharvest food safety interventions and risk management strategies. Evaluation of technologies and strategies is limited by availability of cost-effective, rapid laboratory methods. The objective of this study was to evaluate a commercial qualitative PCR assay and its novel quantitative application to detect and enumerate Salmonella in poultry ceca as an analytical matrix. Ceca were collected at harvest, the contents were homogenized, and paired samples were evaluated with buffered peptone water (BPW) and BAX MP + Supplement (MPS) preenrichment broths followed by PCR screening with a BAX System Q7 PCR and by culture isolation. Additional ceca were inoculated with Salmonella to develop a standard curve for the BAX System SalQuant quantitative PCR application (QA), and estimates were obtained by the QA and most-probable-number (MPN) methods. For preenrichment media, PCR outcomes were equivalent to those of culture isolation for detecting Salmonella in ceca with 95.65 and 87.88% sensitivity and 82.00 and 100.00% specificity (P = 0.074) for BPW and MPS, respectively. However, at the sample level, BPW performed significantly worse (47.92%) than did MPS (68.75%) for overall isolation of Salmonella (P < 0.0001). After standard curve development, the mean QA estimates obtained for the inoculated samples were 1.14 (95% confidence interval [CI]: 0.62 to 1.66), 1.79 (1.50 to 2.08), 2.91 (2.65 to 3.17), and 3.76 (3.26 to 4.25) log CFU/mL for each targeted inoculation of 1.0, 2.0, 3.0, and 4.0 log CFU/mL, respectively, and were within or comparable to the 95% CI values of paired MPN estimates. These data support the use of MPS for the detection and isolation of Salmonella enterica from poultry ceca when screening with PCR and indicate that QA may be useful as an alternative tool to estimate Salmonella loads in poultry ceca, which may support preharvest food safety interventions. HIGHLIGHTS
Collapse
Affiliation(s)
- W Evan Chaney
- Diamond V, Cargill Health Technologies, Cedar Rapids, Iowa 52404
| | | | | | - Savannah F Applegate
- Department of Animal and Food Sciences, Texas Tech University, Lubbock, Texas 79415, USA
| | - Marcos X Sanchez-Plata
- Department of Animal and Food Sciences, Texas Tech University, Lubbock, Texas 79415, USA
| |
Collapse
|
7
|
Lactobacillus reuteri and Enterococcus faecium from Poultry Gut Reduce Mucin Adhesion and Biofilm Formation of Cephalosporin and Fluoroquinolone-Resistant Salmonella enterica. Animals (Basel) 2021; 11:ani11123435. [PMID: 34944212 PMCID: PMC8697943 DOI: 10.3390/ani11123435] [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: 08/03/2021] [Revised: 08/29/2021] [Accepted: 09/03/2021] [Indexed: 12/16/2022] Open
Abstract
Non-typhoidal Salmonella (NTS) can cause infection in poultry, livestock, and humans. Although the use of antimicrobials as feed additives is prohibited, the previous indiscriminate use and poor regulatory oversight in some parts of the world have resulted in increased bacterial resistance to antimicrobials, including cephalosporins and fluoroquinolones, which are among the limited treatment options available against NTS. This study aimed to isolate potential probiotic lactic acid bacteria (LAB) strains from the poultry gut to inhibit fluoroquinolone and cephalosporin resistant MDR Salmonella Typhimurium and S. Enteritidis. The safety profile of the LAB isolates was evaluated for the hemolytic activity, DNase activity, and antibiotic resistance. Based on the safety results, three possible probiotic LAB candidates for in vitro Salmonella control were chosen. Candidate LAB isolates were identified by 16S rDNA sequencing as Lactobacillus reuteri PFS4, Enterococcus faecium PFS13, and Enterococcus faecium PFS14. These strains demonstrated a good tolerance to gastrointestinal-related stresses, including gastric acid, bile, lysozyme, and phenol. In addition, the isolates that were able to auto aggregate had the ability to co-aggregate with MDR S. Typhimurium and S. Enteritidis. Furthermore, LAB strains competitively reduced the adhesion of pathogens to porcine mucin Type III in co-culture studies. The probiotic combination of the selected LAB isolates inhibited the biofilm formation of S. Typhimurium FML15 and S. Enteritidis FML18 by 90% and 92%, respectively. In addition, the cell-free supernatant (CFS) of the LAB culture significantly reduced the growth of Salmonella in vitro. Thus, L. reuteri PFS4, E. faecium PFS13, and E. faecium PFS 14 are potential probiotics that could be used to control MDR S. Typhimurium and S. Enteritidis in poultry. Future investigations are required to elucidate the in vivo potential of these probiotic candidates as Salmonella control agents in poultry and animal feed.
Collapse
|
8
|
Dogan OB, Aditya A, Ortuzar J, Clarke J, Wang B. A systematic review and meta-analysis of the efficacy of processing stages and interventions for controlling Campylobacter contamination during broiler chicken processing. Compr Rev Food Sci Food Saf 2021; 21:227-271. [PMID: 34730272 DOI: 10.1111/1541-4337.12860] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/16/2021] [Accepted: 09/17/2021] [Indexed: 12/13/2022]
Abstract
Systematic review and meta-analysis were conducted to quantify the effects of processing stages and interventions on the prevalence and concentration of Campylobacter on broiler carcasses. To comprehensively capture relevant evidence, six databases were searched using the keywords "Campylobacter" and "broiler chicken." The literature search yielded 10,450 unique citations, and after applying predetermined inclusion and exclusion criteria, 72 and 53 relevant citations were included in meta-analyses for processing stages and interventions, respectively. As the two primary outcomes, log reduction and prevalence changes were estimated for each stage or intervention using a random-effects meta-analysis approach whenever possible. The outcome-level quality assessment was conducted following the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. The analysis revealed that scalding and chilling majorly reduces the prevalence and concentration of Campylobacter. Immersion chilling reduces the concentration regardless of chemical additives, but its effect on prevalence is not conclusive. The effects of carcass washing applications remain uncertain due to the inconsistency and imprecision of both outcomes. Defeathering and evisceration were identified as stages that can increase both prevalence and concentration. Both chemical and physical processing interventions provide limited efficacy in concentration and prevalence reduction. Major limitations of the review were inconsistency and imprecision at the outcome level and reporting issues and data gaps at the study level. The results are expected to inform quantitative microbial risk assessment model development and support evidence-based decision-making.
Collapse
Affiliation(s)
- Onay B Dogan
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Anand Aditya
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Juan Ortuzar
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Jennifer Clarke
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA.,Department of Statistics, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| | - Bing Wang
- Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA
| |
Collapse
|
9
|
The changing microbiome of poultry meat; from farm to fridge. Food Microbiol 2021; 99:103823. [PMID: 34119108 DOI: 10.1016/j.fm.2021.103823] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 04/24/2021] [Accepted: 04/27/2021] [Indexed: 11/20/2022]
Abstract
Chickens play host to a diverse community of microorganisms which constitute the microflora of the live bird. Factors such as diet, genetics and immune system activity affect this complex population within the bird, while external influences including weather and exposure to other animals alter the development of the microbiome. Bacteria from these settings including Campylobacter and Salmonella play an important role in the quality and safety of end-products from these birds. Further steps, including washing and chilling, within the production cycle aim to control the proliferation of these microbes as well as those which cause product spoilage. These steps impose specific selective pressures upon the microflora of the meat product. Within the next decade, it is forecast that poultry meat, particularly chicken will become the most consumed meat globally. However, as poultry meat is a frequently cited reservoir of zoonotic disease, understanding the development of its microflora is key to controlling the proliferation of important spoilage and pathogenic bacterial groups present on the bird. Whilst several excellent reviews exist detailing the microbiome of poultry during primary production, others focus on fate of important poultry pathogens such as Campylobacter and Salmonella spp. At farm and retail level, and yet others describe the evolution of spoilage microbes during spoilage. This review seeks to provide the poultry industry and research scientists unfamiliar with food technology process with a holistic overview of the key changes to the microflora of broiler chickens at each stage of the production and retail cycle.
Collapse
|
10
|
Perez‐Arnedo I, Cantalejo MJ, Martínez‐Laorden A, Gonzalez‐Fandos E. Effect of processing on the microbiological quality and safety of chicken carcasses at slaughterhouse. Int J Food Sci Technol 2021. [DOI: 10.1111/ijfs.14815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Iratxe Perez‐Arnedo
- Food Technology Department CIVA Research Center University of La Rioja Madre de Dios 53 Logrono La Rioja26006Spain
| | - María J. Cantalejo
- School of Agricultural Engineering Public University of NavarreEdificio Los Olivos Campus de Arrosadia sn Pamplona31006Spain
| | - Alba Martínez‐Laorden
- Food Technology Department CIVA Research Center University of La Rioja Madre de Dios 53 Logrono La Rioja26006Spain
| | - Elena Gonzalez‐Fandos
- Food Technology Department CIVA Research Center University of La Rioja Madre de Dios 53 Logrono La Rioja26006Spain
| |
Collapse
|
11
|
Rauf A, Khalil AA, Rahman UU, Khalid A, Naz S, Shariati MA, Rebezov M, Urtecho EZ, de Albuquerque RDDG, Anwar S, Alamri A, Saini RK, Rengasamy KRR. Recent advances in the therapeutic application of short-chain fatty acids (SCFAs): An updated review. Crit Rev Food Sci Nutr 2021; 62:6034-6054. [PMID: 33703960 DOI: 10.1080/10408398.2021.1895064] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Over the past decade, the gut microbiota has emerged as an important frontier in understanding the human body's homeostasis and the development of diseases. Gut flora in human beings regulates various metabolic functionalities, including enzymes, amino acid synthesis, bio-transformation of bile acid, fermentation of non-digestible carbohydrates (NDCs), generation of indoles and polyamines (PAs), and production of short-chain fatty acids (SCFAs). Among all the metabolites produced by gut microbiota, SCFAs, the final product of fermentation of dietary fibers by gut microbiota, receive lots of attention from scientists due to their pharmacological and physiological characteristics. However, the molecular mechanisms underlying the role of SCFAs in the interaction between diet, gut microbiota, and host energy metabolism is still needed in-depth research. This review highlights the recent biotechnological advances in applying SCFAs as important metabolites to treat various diseases and maintain colonic health.
Collapse
Affiliation(s)
- Abdur Rauf
- Department of Chemistry, University of Swabi, Swabi, Anbar, Khyber Pakhtunkhwa (KP), Pakistan
| | - Anees Ahmed Khalil
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Pakistan
| | - Ubaid-Ur- Rahman
- School of Food and Agricultural Sciences, University of Management and Technology, Lahore, Pakistan
| | - Ahood Khalid
- University Institute of Diet and Nutritional Sciences, Faculty of Allied Health Sciences, The University of Lahore, Pakistan
| | - Saima Naz
- Deaprtment of Biotechnology, Woman University Mardan, Mardan, Khyber Pakhtunkhwa (KP), Pakistan
| | - Mohammad Ali Shariati
- K.G. Razumovsky, Moscow State University of Technologies and Management (the First Cossack University), Moscow, Russian
| | - Maksim Rebezov
- V.M. Gorbatov Federal Research Center for Food Systems of Russian Academy of Sciences, Moscow, Russian.,Prokhorov General Physics Institute of the, Russian Academy of Science, Moscow, Russian
| | | | | | - Sirajudheen Anwar
- Department of Pharmacology & Toxicology, College of Pharmacy, University of Hail, Hail, KSA
| | - Abdulwahab Alamri
- Department of Pharmacology & Toxicology, College of Pharmacy, University of Hail, Hail, KSA
| | | | - Kannan R R Rengasamy
- Indigenous Knowledge Systems Centre, Faculty of Natural and Agricultural Sciences, North-West University, Mmabatho, North West Province, South Africa
| |
Collapse
|
12
|
Machado Junior PC, Chung C, Hagerman A. Modeling Salmonella Spread in Broiler Production: Identifying Determinants and Control Strategies. Front Vet Sci 2020; 7:564. [PMID: 33195493 PMCID: PMC7477330 DOI: 10.3389/fvets.2020.00564] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 07/15/2020] [Indexed: 11/25/2022] Open
Abstract
The presence of Salmonella spp. in broiler production is a food safety concern as the bacterium can be transmitted to humans via contaminated meat and derived products. Salmonella detection in litter at the pre-slaughter period has been linked to increased odds of contaminated broiler carcasses and meat derived products. To determine risk factors related to farm and broiler house characteristics and management practices, this study uses a unique longitudinal data set from a Brazilian integrated broiler enterprise, which contains official results of Salmonella spp. isolation from drag swabs collected at the end of the grow-out period. A Bayesian hierarchical spatio-temporal model found significant spatial and time influence on the odds of isolating Salmonella spp. from litter as well as significant effects from the size of a broiler house, total housing area per farm, type of broiler house, and number of litter recycles. Results indicate that recycling litter beyond 6 rearing cycles significantly increased the odds of isolating Salmonella before slaughter, and the bacterium was more likely to persist in conventional broiler houses, compared to broiler houses with controlled environment. Evidence of a potential principal-agent problem was also found in setting strategies to control the bacterium from litter, which suggests strong incentives to adopt the strategies aiming to reduce prevalence of the bacterium in the integrated enterprise. Our findings could be used to develop alternative measures to reduce the risk of persistence of the bacterium in the broiler production chain.
Collapse
Affiliation(s)
| | - Chanjin Chung
- Department of Agricultural Economics, Oklahoma State University, Stillwater, OK, United States
| | - Amy Hagerman
- Department of Agricultural Economics, Oklahoma State University, Stillwater, OK, United States
| |
Collapse
|
13
|
Castañeda-Gulla K, Sattlegger E, Mutukumira AN. Persistent contamination ofSalmonella,Campylobacter,Escherichia coli, andStaphylococcus aureusat a broiler farm in New Zealand. Can J Microbiol 2020; 66:171-185. [DOI: 10.1139/cjm-2019-0280] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Intensive poultry production due to public demand raises the risk of contamination, creating potential foodborne hazards to consumers. The prevalence and microbial load of the pathogens Campylobacter, Salmonella, Staphylococcus aureus, and Escherichia coli was determined by standard methods at the farm level. After disinfection, swab samples collected from wall crevices, drinkers, and vents were heavily contaminated, as accumulated organic matter and dust likely protected the pathogens from the disinfectants used. The annex floor also showed high microbial concentrations, suggesting the introduction of pathogens from external environments, highlighting the importance of erecting hygiene barriers at the entrance of the main shed. Therefore, pathogen control measures and proper application of disinfectants are recommended as intervention strategies. Additionally, quantitative polymerase chain reaction (qPCR) was evaluated as a quantification tool. qPCR showed limitations with samples containing low microbial counts because of the low detection limit of the method. Thus, bacterial pre-enrichment of test samples may be necessary to improve the detection of pathogens by qPCR.
Collapse
Affiliation(s)
- Kristine Castañeda-Gulla
- School of Natural and Mathematical Sciences, Massey University, Private Bag 102904, Auckland 0745, New Zealand
| | - Evelyn Sattlegger
- School of Natural and Mathematical Sciences, Massey University, Private Bag 102904, Auckland 0745, New Zealand
| | - Anthony N. Mutukumira
- Department of Food Technology, School of Food and Advanced Technology, Massey University, Private Bag 102904, Auckland 0745, New Zealand
| |
Collapse
|
14
|
Javůrková VG, Pokorná M, Mikšík I, Tůmová E. Concentration of egg white antimicrobial and immunomodulatory proteins is related to eggshell pigmentation across traditional chicken breeds. Poult Sci 2019; 98:6931-6941. [PMID: 31420680 PMCID: PMC8913977 DOI: 10.3382/ps/pez472] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 07/30/2019] [Indexed: 12/14/2022] Open
Affiliation(s)
- Veronika Gvoždíková Javůrková
- Department of Animal Science, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague – Suchdol, Czech Republic
- Corresponding author
| | - Monika Pokorná
- Department of Zoology, Faculty of Science, Charles University, Viničná 7, 128 44 Prague 2, Czech Republic
| | - Ivan Mikšík
- Institute of Physiology of the Czech Academy of Sciences, Vídeňská 1083, 142 20 Prague, Czech Republic
| | - Eva Tůmová
- Department of Animal Science, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague – Suchdol, Czech Republic
| |
Collapse
|
15
|
Wang Z, Zuo J, Gong J, Hu J, Jiang W, Mi R, Huang Y, Chen Z, Phouthapane V, Qi K, Wang C, Han X. Development of a multiplex PCR assay for the simultaneous and rapid detection of six pathogenic bacteria in poultry. AMB Express 2019; 9:185. [PMID: 31728678 PMCID: PMC6856251 DOI: 10.1186/s13568-019-0908-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 10/30/2019] [Indexed: 11/10/2022] Open
Abstract
Escherichia coli, Pasteurella multocida, Proteus mirabilis, Pseudomonas aeruginosa, Salmonella spp. and Staphylococcus aureus are six bacterial pathogens of avian. However, these pathogens may cause many similar pathological changes, resulting in clinical isolates that are difficult to quickly and simultaneously detect and identify. Here, a multiplex polymerase chain reaction (m-PCR) assay is reported to rapidly identify targets genes (phoA, KMT1, ureR, toxA, invA, and nuc) of these six pathogens in clinical samples. Six pairs of specific primers were designed. The optimal reaction conditions, specificity, and sensitivity of the m-PCR assay were investigated. The results showed that betaine remarkably improved amplification of the target genes. Specific test results showed that all six pathogens were detected by the proposed m-PCR protocol without cross-amplification with viruses or parasites. Sensitivity test results showed that the m-PCR system could amplify the six target genes from bacterial genomes or cultures with template amounts of 500 pg or 2.8-8.6 × 103 colony forming units, respectively. Furthermore, the six bacterial pathogens isolated from the infected tissue samples were successfully identified. The proposed m-PCR assay is a useful tool to monitor and diagnose bacterial infection in birds with high specificity, sensitivity and throughput.
Collapse
|
16
|
Lu T, Marmion M, Ferone M, Wall P, Scannell AGM. Processing and retail strategies to minimizeCampylobactercontamination in retail chicken. J FOOD PROCESS PRES 2019. [DOI: 10.1111/jfpp.14251] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ting Lu
- School of Public Health, Physiotherapy and Sports Science University College Dublin, National University of Ireland Dublin Ireland
- Center for Food Safety University College Dublin, National University of Ireland Dublin Ireland
| | - Matthew Marmion
- School of Agriculture and Food Science, Agricultural & Food Science Centre University College Dublin, National University of Ireland Dublin Ireland
| | - Mariateresa Ferone
- School of Agriculture and Food Science, Agricultural & Food Science Centre University College Dublin, National University of Ireland Dublin Ireland
| | - Patrick Wall
- School of Public Health, Physiotherapy and Sports Science University College Dublin, National University of Ireland Dublin Ireland
- Center for Food Safety University College Dublin, National University of Ireland Dublin Ireland
- Institute of Food and Health, O'Brien Science Centre South University College Dublin, National University of Ireland Dublin Ireland
| | - Amalia G. M. Scannell
- Center for Food Safety University College Dublin, National University of Ireland Dublin Ireland
- School of Agriculture and Food Science, Agricultural & Food Science Centre University College Dublin, National University of Ireland Dublin Ireland
- Institute of Food and Health, O'Brien Science Centre South University College Dublin, National University of Ireland Dublin Ireland
| |
Collapse
|
17
|
Yulistiani R, Praseptiangga D, Supyani, Sudibya. Occurrences of Salmonella spp. and Escherichia coli in chicken meat, intestinal contents and rinse water at slaughtering place from traditional market in Surabaya, Indonesia. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/633/1/012007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
18
|
Racicot M, Comeau G, Tremblay A, Quessy S, Cereno T, Charron-Langlois M, Venne D, Hébert G, Vaillancourt JP, Fravalo P, Ouckama R, Mitevski D, Guerin MT, Agunos A, DeWinter L, Catford A, Mackay A, Gaucher ML. Identification and selection of food safety-related risk factors to be included in the Canadian Food Inspection Agency's Establishment-based Risk Assessment model for Hatcheries. Zoonoses Public Health 2019; 67:14-24. [PMID: 31550078 DOI: 10.1111/zph.12650] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Revised: 08/14/2019] [Accepted: 08/25/2019] [Indexed: 02/01/2023]
Abstract
Towards the continuous improvement of its inspection system, the Canadian Food Inspection Agency (CFIA) is developing an Establishment-based Risk Assessment model for Hatcheries to allocate inspection resources based on the food safety risk associated with the Canadian hatcheries falling under its jurisdiction. The objectives of the current study were to identify and select critical food safety-related risk factors that would be included in this model, with a main focus on Salmonella. A literature review was used to develop a comprehensive list of risk factors that could potentially contribute to the food safety risk attributed to Canadian hatcheries operating in all production streams (breeders, layers, broilers, turkeys, waterfowl and game birds). The development of this list used a selection process that was conducted according to the availability of data sources, the clarity of definition and the measurability of the selected risk factors. A panel of experts reviewed and adjusted the identified risk factors. A final list of 29 risk factors was generated; 20 originated from the scientific literature and nine from the expert panel. Risk factors were grouped in three clusters according to whether they pertained to the inherent risk (nine factors identified), risk mitigation (nine factors identified) or compliance of a hatchery with its preventive control plan and regulatory requirements (11 factors identified). Criteria for assessing each risk factor were defined based on common practices used in the Canadian hatchery industry. This comprehensive list of risk factors and criteria represents useful information to support the design and implementation of a Canadian risk assessment model for hatcheries, but could also be used by like-minded food safety authorities.
Collapse
Affiliation(s)
- Manon Racicot
- Canadian Food Inspection Agency, St-Hyacinthe, QC, Canada
| | | | - Alexandre Tremblay
- Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada
| | - Sylvain Quessy
- Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada
| | | | | | | | | | | | - Philippe Fravalo
- Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada
| | | | | | - Michele T Guerin
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada
| | - Agnes Agunos
- Public Health Agency of Canada, Guelph, ON, Canada
| | | | | | - Anna Mackay
- Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Marie-Lou Gaucher
- Faculté de médecine vétérinaire, Université de Montréal, St-Hyacinthe, QC, Canada
| |
Collapse
|
19
|
|
20
|
|
21
|
|
22
|
Hardie KM, Guerin MT, Ellis A, Leclair D. Associations of processing level variables with Salmonella prevalence and concentration on broiler chicken carcasses and parts in Canada. Prev Vet Med 2019; 168:39-51. [PMID: 31097122 DOI: 10.1016/j.prevetmed.2019.03.027] [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: 10/26/2018] [Revised: 02/14/2019] [Accepted: 03/30/2019] [Indexed: 10/27/2022]
Abstract
A national baseline study was conducted between December 2012 and December 2013 to determine the pre-packaging prevalence and concentration of foodborne pathogens on broiler chicken carcasses and parts at processing; a survey was implemented simultaneously to collect data on the processing practices used to control these pathogens. Thirty federally-registered Canadian poultry processing establishments completed the questionnaire. A total of 2,732 samples of carcasses and parts (breast and thigh pieces) were collected over the study period from these establishments. For Salmonella, the overall proportion positive was 0.22 (95% CI 0.20, 0.23), and the mean concentration was 0.67 (95% CI 0.51, 0.83) MPN/mL of rinse fluid. Multivariable regression models with random intercepts for the establishment and the date of sampling were used to identify associations between Salmonella prevalence and concentration and processing practices. In the final logistic regression model for the prevalence outcome (positive or negative sample), there were three statistically significant variables: product type (carcass or part); chilling method (water or air); and chlorine use in the establishment (chlorine, cetylpyridinium chloride, or neither). The likelihood of testing positive for Salmonella was higher on parts than carcasses (OR 3.03, 95% CI 2.38, 3.86), and higher when cetylpyridinium chloride was used (OR 2.00, 95% CI 1.36, 2.95), or when other processing aids were used (OR 1.99, 95% CI 1.26, 3.15), than when chlorine was used. Water chilling was negatively associated with testing positive for Salmonella when compared with air chilling (OR 0.68, 95% CI 0.48, 0.96). In the final linear regression model for the concentration outcome (log10 MPN/mL), there was one statistically significant variable chilling method, where water chilling was associated with a decrease in concentration (β -0.23, 95% CI -0.38, -0.08 log10 MPN/mL). The intraclass correlation coefficients for establishment and date sampling were 0.02 and 0.23 in the linear regression model, and 0.01 and 0.34 in the logistic regression model, respectively. Further studies to explore the methods to reduce microbial contamination during the air chilling and cut-up and boning processes in broiler chicken establishments in Canada are recommended.
Collapse
Affiliation(s)
- Kate M Hardie
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada; Food Safety Program Services Division, Canadian Food Inspection Agency, 1400 Merivale Road, Ottawa, Ontario, K1A0Y9, Canada.
| | - Michele T Guerin
- Department of Population Medicine, Ontario Veterinary College, University of Guelph, 50 Stone Road East, Guelph, Ontario, N1G 2W1, Canada
| | - Andrea Ellis
- Office of the Chief Veterinary Officer/World Organisation for Animal Health Delegate, Canadian Food Inspection Agency, 1400 Merivale Road, Ottawa, Ontario, K1A 0Y9, Canada
| | - Daniel Leclair
- Food Safety Program Services Division, Canadian Food Inspection Agency, 1400 Merivale Road, Ottawa, Ontario, K1A0Y9, Canada
| |
Collapse
|
23
|
|
24
|
Clavijo V, Torres-Acosta MA, Vives-Flórez MJ, Rito-Palomares M. Aqueous two-phase systems for the recovery and purification of phage therapy products: Recovery of salmonella bacteriophage ϕSan23 as a case study. Sep Purif Technol 2019. [DOI: 10.1016/j.seppur.2018.09.088] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
25
|
Projahn M, Pacholewicz E, Becker E, Correia-Carreira G, Bandick N, Kaesbohrer A. Reviewing Interventions against Enterobacteriaceae in Broiler Processing: Using Old Techniques for Meeting the New Challenges of ESBL E. coli? BIOMED RESEARCH INTERNATIONAL 2018; 2018:7309346. [PMID: 30426012 PMCID: PMC6218796 DOI: 10.1155/2018/7309346] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Revised: 09/17/2018] [Accepted: 09/25/2018] [Indexed: 02/07/2023]
Abstract
Extended-spectrum beta-lactamase- (ESBL-) producing Enterobacteriaceae are frequently detected in poultry and fresh chicken meat. Due to the high prevalence, an impact on human colonization and the spread of antibiotic resistance into the environment is assumed. ESBL-producing Enterobacteriaceae can be transmitted along the broiler production chain but also their persistence is reported because of insufficient cleaning and disinfection. Processing of broiler chickens leads to a reduction of microbiological counts on the carcasses. However, processing steps like scalding, defeathering, and evisceration are critical concerning fecal contamination and, therefore, cross-contamination with bacterial strains. Respective intervention measures along the slaughter processing line aim at reducing the microbiological load on broiler carcasses as well as preventing cross-contamination. Published data on the impact of possible intervention measures against ESBL-producing Enterobacteriaceae are missing and, therefore, we focused on processing measures concerning Enterobacteriaceae, in particular E. coli or coliform counts, during processing of broiler chickens to identify possible hints for effective strategies to reduce these resistant bacteria. In total, 73 publications were analyzed and data on the quantitative reductions were extracted. Most investigations concentrated on scalding, postdefeathering washes, and improvements in the chilling process and were already published in and before 2008 (n=42, 58%). Therefore, certain measures may be already installed in slaughterhouse facilities today. The effect on eliminating ESBL-producing Enterobacteriaceae is questionable as there are still positive chicken meat samples found. A huge number of studies dealt with different applications of chlorine substances which are not approved in the European Union and the reduction level did not exceed 3 log10 values. None of the measures was able to totally eradicate Enterobacteriaceae from the broiler carcasses indicating the need to develop intervention measures to prevent contamination with ESBL-producing Enterobacteriaceae and, therefore, the exposure of humans and the further release of antibiotic resistances into the environment.
Collapse
Affiliation(s)
- Michaela Projahn
- German Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - Ewa Pacholewicz
- German Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - Evelyne Becker
- German Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - Guido Correia-Carreira
- German Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - Niels Bandick
- German Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany
| | - Annemarie Kaesbohrer
- German Federal Institute for Risk Assessment, Diedersdorfer Weg 1, 12277 Berlin, Germany
| |
Collapse
|
26
|
Pande V, McWhorter AR, Chousalkar KK. Anti-bacterial and anti-biofilm activity of commercial organic acid products against Salmonella enterica isolates recovered from an egg farm environment. Avian Pathol 2018; 47:189-196. [DOI: 10.1080/03079457.2017.1394979] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Vivek Pande
- School of Animal and Veterinary Sciences, The University of Adelaide, Australia
| | - Andrea R. McWhorter
- School of Animal and Veterinary Sciences, The University of Adelaide, Australia
| | - Kapil K. Chousalkar
- School of Animal and Veterinary Sciences, The University of Adelaide, Australia
| |
Collapse
|
27
|
Hernandez-Patlan D, Solis-Cruz B, Méndez-Albores A, Latorre JD, Hernandez-Velasco X, Tellez G, López-Arellano R. Comparison of PrestoBlue ® and plating method to evaluate antimicrobial activity of ascorbic acid, boric acid and curcumin in an in vitro gastrointestinal model. J Appl Microbiol 2018; 124:423-430. [PMID: 29215799 DOI: 10.1111/jam.13659] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 10/06/2017] [Accepted: 11/25/2017] [Indexed: 11/30/2022]
Abstract
AIMS To compare the conventional plating method vs a fluorometric method using PrestoBlue® as a dye by determining the antimicrobial activity of two organic acids and curcumin (CUR) against Salmonella Enteritidis in an avian in vitro digestion model that simulates the crop, proventriculus and intestine. METHODS AND RESULTS A concentration of 108 CFU per ml of S. Enteritidis was exposed to groups with different rates of ascorbic acid (AA), boric acid (BA) and CUR. Significant differences were observed when the means of the treatments were compared with the controls in the compartments that simulate the crop and intestine (P < 0·05). Ascorbic acid alone and high rates of AA in the mixtures were the most efficient treatments in the crop compartment. However, in the intestinal compartment BA alone and at different rates in the mixture BA-CUR (1 : 1) were the best treatments to decrease the concentration of S. Enteritidis. CONCLUSIONS The results of this study suggest that there could be an antagonistic bactericidal effect between AA and CUR and AA and BA as well as a synergistic bactericidal effect between BA and CUR. SIGNIFICANCE AND IMPACT OF THE STUDY These findings may contribute to the development of a formulation with microencapsulated compounds to liberate them in different compartments to combat S. Enteritidis infections in broiler chickens.
Collapse
Affiliation(s)
- D Hernandez-Patlan
- Laboratorio 5: LEDEFAR, Unidad de Investigacion Multidisciplinaria, Facultad de Estudios Superiores (FES) Cuautitlan, Universidad Nacional Autonoma de Mexico (UNAM), Cuautitlan Izcalli, Estado de Mexico, Mexico
| | - B Solis-Cruz
- Laboratorio 5: LEDEFAR, Unidad de Investigacion Multidisciplinaria, Facultad de Estudios Superiores (FES) Cuautitlan, Universidad Nacional Autonoma de Mexico (UNAM), Cuautitlan Izcalli, Estado de Mexico, Mexico
| | - A Méndez-Albores
- Laboratorio 14: Alimentos, Micotoxinas y Micotoxicosis, Unidad de Investigacion Multidisciplinaria, FES Cuautitlan, UNAM, Cuautitlan Izcalli, Estado de Mexico, Mexico
| | - J D Latorre
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - X Hernandez-Velasco
- Departamento de Medicina y Zootecnia de Aves, Facultad de Medicina Veterinaria y Zootecnia, UNAM, Mexico City, Mexico
| | - G Tellez
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - R López-Arellano
- Laboratorio 5: LEDEFAR, Unidad de Investigacion Multidisciplinaria, Facultad de Estudios Superiores (FES) Cuautitlan, Universidad Nacional Autonoma de Mexico (UNAM), Cuautitlan Izcalli, Estado de Mexico, Mexico
| |
Collapse
|
28
|
Reducing Foodborne Pathogen Persistence and Transmission in Animal Production Environments: Challenges and Opportunities. Microbiol Spectr 2017; 4. [PMID: 27726803 DOI: 10.1128/microbiolspec.pfs-0006-2014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Preharvest strategies to reduce zoonotic pathogens in food animals are important components of the farm-to-table food safety continuum. The problem is complex; there are multiple pathogens of concern, multiple animal species under different production and management systems, and a variety of sources of pathogens, including other livestock and domestic animals, wild animals and birds, insects, water, and feed. Preharvest food safety research has identified a number of intervention strategies, including probiotics, direct-fed microbials, competitive exclusion cultures, vaccines, and bacteriophages, in addition to factors that can impact pathogens on-farm, such as seasonality, production systems, diet, and dietary additives. Moreover, this work has revealed both challenges and opportunities for reducing pathogens in food animals. Animals that shed high levels of pathogens and predominant pathogen strains that exhibit long-term persistence appear to play significant roles in maintaining the prevalence of pathogens in animals and their production environment. Continued investigation and advancements in sequencing and other technologies are expected to reveal the mechanisms that result in super-shedding and persistence, in addition to increasing the prospects for selection of pathogen-resistant food animals and understanding of the microbial ecology of the gastrointestinal tract with regard to zoonotic pathogen colonization. It is likely that this continued research will reveal other challenges, which may further indicate potential targets or critical control points for pathogen reduction in livestock. Additional benefits of the preharvest reduction of pathogens in food animals are the reduction of produce, water, and environmental contamination, and thereby lower risk for human illnesses linked to these sources.
Collapse
|
29
|
Jørgensen S, Poulsen L, Thorndal L, Ronaghinia A, Bisgaard M, Christensen H. Characterization ofEnterococcus faecalisisolated from the cloaca of ‘fancy breeds’ and confined chickens. J Appl Microbiol 2017; 122:1149-1158. [DOI: 10.1111/jam.13416] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/21/2016] [Accepted: 01/26/2017] [Indexed: 01/20/2023]
Affiliation(s)
- S.L. Jørgensen
- Department of Veterinary Disease Biology; University of Copenhagen; Frederiksberg Denmark
| | - L.L. Poulsen
- Department of Veterinary Disease Biology; University of Copenhagen; Frederiksberg Denmark
| | - L. Thorndal
- Department of Veterinary Disease Biology; University of Copenhagen; Frederiksberg Denmark
- Danish Veterinary and Food Administration; Vejle Denmark
| | - A.A. Ronaghinia
- Department of Veterinary Disease Biology; University of Copenhagen; Frederiksberg Denmark
| | | | - H. Christensen
- Department of Veterinary Disease Biology; University of Copenhagen; Frederiksberg Denmark
| |
Collapse
|
30
|
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
| |
Collapse
|
31
|
Peng M, Biswas D. Short chain and polyunsaturated fatty acids in host gut health and foodborne bacterial pathogen inhibition. Crit Rev Food Sci Nutr 2016; 57:3987-4002. [DOI: 10.1080/10408398.2016.1203286] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mengfei Peng
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA
- Biological Sciences Program Molecular and Cellular Biology Concentration, University of Maryland, College Park, Maryland, USA
| | - Debabrata Biswas
- Department of Animal and Avian Sciences, University of Maryland, College Park, Maryland, USA
- Biological Sciences Program Molecular and Cellular Biology Concentration, University of Maryland, College Park, Maryland, USA
- Center for Food Safety and Security Systems, University of Maryland, College Park, Maryland, USA
| |
Collapse
|
32
|
Sahin O, Kassem II, Shen Z, Lin J, Rajashekara G, Zhang Q. Campylobacter in Poultry: Ecology and Potential Interventions. Avian Dis 2015; 59:185-200. [PMID: 26473668 DOI: 10.1637/11072-032315-review] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Avian hosts constitute a natural reservoir for thermophilic Campylobacter species, primarily Campylobacter jejuni and Campylobacter coli, and poultry flocks are frequently colonized in the intestinal tract with high numbers of the organisms. Prevalence rates in poultry, especially in slaughter-age broiler flocks, could reach as high as 100% on some farms. Despite the extensive colonization, Campylobacter is essentially a commensal in birds, although limited evidence has implicated the organism as a poultry pathogen. Although Campylobacter is insignificant for poultry health, it is a leading cause of food-borne gastroenteritis in humans worldwide, and contaminated poultry meat is recognized as the main source for human exposure. Therefore, considerable research efforts have been devoted to the development of interventions to diminish Campylobacter contamination in poultry, with the intention to reduce the burden of food-borne illnesses. During the past decade, significant advance has been made in understanding Campylobacter in poultry. This review summarizes the current knowledge with an emphasis on ecology, antibiotic resistance, and potential pre- and postharvest interventions.
Collapse
Affiliation(s)
- Orhan Sahin
- A Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011
| | - Issmat I Kassem
- B Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, OH 44691
| | - Zhangqi Shen
- A Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011
| | - Jun Lin
- C Department of Animal Science, The University of Tennessee, Knoxville, TN 37996
| | - Gireesh Rajashekara
- B Food Animal Health Research Program, Ohio Agricultural Research and Development Center, Department of Veterinary Preventive Medicine, The Ohio State University, Wooster, OH 44691
| | - Qijing Zhang
- A Department of Veterinary Microbiology and Preventive Medicine, Iowa State University, Ames, IA 50011
| |
Collapse
|
33
|
Effect of extending processing plant operating time on the microbiological quality and safety of broiler carcasses. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.11.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
34
|
Umaraw P, Prajapati A, Verma AK, Pathak V, Singh VP. Control ofcampylobacterin poultry industry from farm to poultry processing unit: A review. Crit Rev Food Sci Nutr 2015; 57:659-665. [DOI: 10.1080/10408398.2014.935847] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
35
|
Effects of fibrinopurulent polyserositis in broilers on post-harvest microbiological parameters relevant to public health of broiler meat. Curr Microbiol 2015; 70:631-6. [PMID: 25561407 DOI: 10.1007/s00284-014-0768-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 11/25/2014] [Indexed: 10/24/2022]
Abstract
Fibrinopurulent polyserositis is of utmost importance in commercial broiler production worldwide. This multifactorial endemic disease is marked by severe clinical alterations post-mortem, yet its effects on food safety and processing hygiene criteria remain unclear. Current considerations presume that bacteraemia lead to meat being unfit for consumption. In the present study, we evaluated some microbiological criteria of affected broiler carcasses in comparison to unaffected control broiler carcasses. The results thereof indicated that the lesions did not result in higher bacterial counts or in an increased percentage of contaminated meat. The carry-over of associated zoonotic pathogens into the food chain seems to be not more prevalent in birds affected with non-systemic affections of polyserositis.
Collapse
|
36
|
Neal-McKinney JM, Samuelson DR, Eucker TP, Nissen MS, Crespo R, Konkel ME. Reducing Campylobacter jejuni colonization of poultry via vaccination. PLoS One 2014; 9:e114254. [PMID: 25474206 PMCID: PMC4256221 DOI: 10.1371/journal.pone.0114254] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2014] [Accepted: 11/05/2014] [Indexed: 01/01/2023] Open
Abstract
Campylobacter jejuni is a leading bacterial cause of human gastrointestinal disease worldwide. While C. jejuni is a commensal organism in chickens, case-studies have demonstrated a link between infection with C. jejuni and the consumption of foods that have been cross-contaminated with raw or undercooked poultry. We hypothesized that vaccination of chickens with C. jejuni surface-exposed colonization proteins (SECPs) would reduce the ability of C. jejuni to colonize chickens, thereby reducing the contamination of poultry products at the retail level and potentially providing a safer food product for consumers. To test our hypothesis, we injected chickens with recombinant C. jejuni peptides from CadF, FlaA, FlpA, CmeC, and a CadF-FlaA-FlpA fusion protein. Seven days following challenge, chickens were necropsied and cecal contents were serially diluted and plated to determine the number of C. jejuni per gram of material. The sera from the chickens were also analyzed to determine the concentration and specificity of antibodies reactive against the C. jejuni SECPs. Vaccination of chickens with the CadF, FlaA, and FlpA peptides resulted in a reduction in the number of C. jejuni in the ceca compared to the non-vaccinated C. jejuni-challenged group. The greatest reduction in C. jejuni colonization was observed in chickens injected with the FlaA, FlpA, or CadF-FlaA-FlpA fusion proteins. Vaccination of chickens with different SECPs resulted in the production of C. jejuni-specific IgY antibodies. In summary, we show that the vaccination of poultry with individual C. jejuni SECPs or a combination of SECPs provides protection of chickens from C. jejuni colonization.
Collapse
Affiliation(s)
- Jason M. Neal-McKinney
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, United States of America
| | - Derrick R. Samuelson
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, United States of America
| | - Tyson P. Eucker
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, United States of America
| | - Mark S. Nissen
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, United States of America
| | - Rocio Crespo
- Avian Health & Food Safety Laboratory, College of Veterinary Medicine, Washington State University, Puyallup, Washington, United States of America
| | - Michael E. Konkel
- School of Molecular Biosciences, College of Veterinary Medicine, Washington State University, Pullman, Washington, United States of America
| |
Collapse
|
37
|
Samanta I, Joardar S, Das P, Sar T, Bandyopadhyay S, Dutta T, Sarkar U. Prevalence and antibiotic resistance profiles ofSalmonella serotypes isolated from backyard poultry flocks in West Bengal, India. J APPL POULTRY RES 2014. [DOI: 10.3382/japr.2013-00929] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
38
|
Kallapura G, Hernandez-Velasco X, Pumford NR, Bielke LR, Hargis BM, Tellez G. Evaluation of respiratory route as a viable portal of entry for Salmonella in poultry. VETERINARY MEDICINE (AUCKLAND, N.Z.) 2014; 5:59-73. [PMID: 32670847 PMCID: PMC7337206 DOI: 10.2147/vmrr.s62775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Accepted: 04/23/2014] [Indexed: 11/25/2022]
Abstract
With increasing reports of Salmonella infection, we are forced to question whether the fecal-oral route is the major route of infection and consider the possibility that airborne Salmonella infections might have a major unappreciated role. Today's large-scale poultry production, with densely stocked and enclosed production buildings, is often accompanied by very high concentrations of airborne microorganisms. Considering that the upper and lower respiratory lymphoid tissue requires up to 6 weeks to be fully developed, these immune structures seem to have a very minor role in preventing pathogen infection. In addition, the avian respiratory system in commercial poultry has anatomic and physiologic properties that present no challenge to the highly adapted Salmonella. The present review evaluates the hypothesis that transmission by the fecal-respiratory route may theoretically be a viable portal of entry for Salmonella in poultry. First, we update the current knowledge on generation of Salmonella bioaerosols, and the transport and fate of Salmonella at various stages of commercial poultry production. Further, emphasis is placed on survivability of Salmonella in these bioaerosols, as a means to assess the transport and subsequent risk of exposure and infection of poultry. Additionally, the main anatomic structures, physiologic functions, and immunologic defense in the avian respiratory system are discussed to understand the potential entry points inherent in each component that could potentially lead to infection and subsequent systemic infection of poultry by Salmonella. In this context, we also evaluate the role of the mucosal immune system as essentially one large interconnected network that shares information distally, since understanding of this sort of communication between mucosal sites is fundamental to establish the next phase of disease characterization, and perhaps immunization and vaccine development. Further characterization of the respiratory tract with regard to transmission of Salmonella under field conditions may be of critical importance in developing interventional strategies to reduce transmission of this important zoonotic pathogen in poultry.
Collapse
Affiliation(s)
- Gopala Kallapura
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - Xochitl Hernandez-Velasco
- College of Veterinary Medicine and Animal Husbandry, The National Autonomous University of Mexico, Mexico
| | - Neil R Pumford
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - Lisa R Bielke
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - Billy M Hargis
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| | - Guillermo Tellez
- Department of Poultry Science, University of Arkansas, Fayetteville, AR, USA
| |
Collapse
|
39
|
Kallapura G, Kogut MH, Morgan MJ, Pumford NR, Bielke LR, Wolfenden AD, Faulkner OB, Latorre JD, Menconi A, Hernandez-Velasco X, Kuttappan VA, Hargis BM, Tellez G. Fate of Salmonella Senftenberg in broiler chickens evaluated by challenge experiments. Avian Pathol 2014; 43:305-9. [PMID: 24820534 DOI: 10.1080/03079457.2014.923554] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Experimental and epidemiological evidence has indicated the respiratory route to be a potential portal of entry for salmonellas in poultry. The purpose of this study was to evaluate and compare the infectivity of Salmonella enterica serovar Senftenberg following oral gavage, intratracheal or intravenous challenge in chickens. Seven-day-old chicks were challenged with either 10(4) or 10(6) colony-forming units of S. Senftenberg per chick by oral gavage, intratracheal or intravenous challenge, respectively, in two independent trials. Chickens were humanely killed 24 h post challenge and S. Senftenberg was cultured and enumerated from caecal contents, caecal tissue-caecal tonsils and liver and spleen. In both trials, intratracheal delivery of S. Senftenberg was the only route that allowed colonization of the caeca of chickens when compared with oral gavage or intravenous challenge in a dose response fashion (P < 0.05). Liver and spleen samples yielded no S. Seftenberg after the lower dose challenge by the oral or intratracheal route and only low levels following the high-dose administration by these routes, whereas intravenous challenge resulted in recovery of the organisms after both doses. The results of the present study suggest that S. Senftenberg entering the blood is likely to be cleared and will not be able to colonize caeca to the same extent as compared with intratracheal challenge. Clarification of the potential importance of the respiratory tract for transmission of salmonellas under field conditions may be of critical importance to develop intervention strategies to reduce the transmission in poultry.
Collapse
Affiliation(s)
- G Kallapura
- a Department of Poultry Science , University of Arkansas , Fayetteville , AR 72701 , USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
40
|
Kaakoush NO, Sodhi N, Chenu JW, Cox JM, Riordan SM, Mitchell HM. The interplay between Campylobacter and Helicobacter species and other gastrointestinal microbiota of commercial broiler chickens. Gut Pathog 2014; 6:18. [PMID: 24940386 PMCID: PMC4060860 DOI: 10.1186/1757-4749-6-18] [Citation(s) in RCA: 83] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2014] [Accepted: 05/30/2014] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Poultry represent an important source of foodborne enteropathogens, in particular thermophilic Campylobacter species. Many of these organisms colonize the intestinal tract of broiler chickens as harmless commensals, and therefore, often remain undetected prior to slaughter. The exact reasons for the lack of clinical disease are unknown, but analysis of the gastrointestinal microbiota of broiler chickens may improve our understanding of the microbial interactions with the host. METHODS In this study, the fecal microbiota of 31 market-age (56-day old) broiler chickens, from two different farms, was analyzed using high throughput sequencing. The samples were then screened for two emerging human pathogens, Campylobacter concisus and Helicobacter pullorum, using species-specific PCR. RESULTS The gastrointestinal microbiota of chickens was classified into four potential enterotypes, similar to that of humans, where three enterotypes have been identified. The results indicated that variations between farms may have contributed to differences in the microbiota, though each of the four enterotypes were found in both farms suggesting that these groupings did not occur by chance. In addition to the identification of Campylobacter jejuni subspecies doylei and the emerging species, C. concisus, C. upsaliensis and H. pullorum, several differences in the prevalence of human pathogens within these enterotypes were observed. Further analysis revealed microbial taxa with the potential to increase the likelihood of colonization by a number of these pathogens, including C. jejuni. CONCLUSION Depletion of these taxa and the addition of taxa that compete with these pathogens, may form the basis of competitive exclusion strategies to eliminate them from the gastrointestinal tract of chickens.
Collapse
Affiliation(s)
- Nadeem O Kaakoush
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Nidhi Sodhi
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Jeremy W Chenu
- Birling Avian Laboratories, Bringelly, NSW 2556, Australia
| | - Julian M Cox
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW 2052, Australia ; Faculty of Science, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Stephen M Riordan
- Gastrointestinal and Liver Unit, The Prince of Wales Hospital, Randwick, NSW 2031, Australia ; Prince of Wales Clinical School, The University of New South Wales, Sydney, NSW 2052, Australia
| | - Hazel M Mitchell
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW 2052, Australia
| |
Collapse
|
41
|
Kallapura G, Morgan MJ, Pumford NR, Bielke LR, Wolfenden AD, Faulkner OB, Latorre JD, Menconi A, Hernandez-Velasco X, Kuttappan VA, Hargis BM, Tellez G. Evaluation of the respiratory route as a viable portal of entry for Salmonella in poultry via intratracheal challenge of Salmonella Enteritidis and Salmonella Typhimurium. Poult Sci 2014; 93:340-6. [PMID: 24570455 PMCID: PMC4990883 DOI: 10.3382/ps.2013-03602] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022] Open
Abstract
Experimental and epidemiological evidence suggests that primary infection of Salmonella is by the oral-fecal route for poultry. However, the airborne transmission of Salmonella and similar enteric zoonotic pathogens has been historically neglected. Increasing evidence of Salmonella bioaerosol generation in production facilities and studies suggesting the vulnerabilities of the avian respiratory architecture together have indicated the possibility of the respiratory system being a potential portal of entry for Salmonella in poultry. Presently, we evaluated this hypothesis through intratracheal (IT) administration of Salmonella Enteritidis and Salmonella Typhimurium, as separate challenges, in a total of 4 independent trials, followed by enumeration of cfu recovery in ceca-cecal tonsils and recovery incidence in liver and spleen. In all trials, both Salmonella Enteritidis and Salmonella Typhimurium, challenged IT colonized cecae to a similar or greater extent than oral administration at identical challenge levels. In most trials, chickens cultured for cfu enumeration from IT-challenged chicks at same dose as orally challenged, resulted in an increase of 1.5 log higher Salmonella Enteritidis from ceca-cecal tonsils and a much lower dose IT of Salmonella Enteritidis could colonize ceca to the same extent than a higher oral challenge. This trend of increased cecal colonization due to IT challenge was observed with all trails involving week-old birds (experiment 2 and 3), which are widely considered to be more difficult to infect via the oral route. Liver-spleen incidence data showed 33% of liver and spleen samples to be positive for Salmonella Enteritidis administered IT (106 cfu/chick), compared with 0% when administered orally (experiment 2, trial 1). Collectively, these data suggest that the respiratory tract may be a largely overlooked portal of entry for Salmonella infections in chickens.
Collapse
Affiliation(s)
- G Kallapura
- Department of Poultry Science, University of Arkansas, Fayetteville 72701
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
42
|
Snider TA, Gull T, Jackson TA, Martinez-Becerra FJ, Picking DR, Picking WD, Picking WL. Experimental salmonellosis challenge model in older calves. Vet Microbiol 2014; 170:65-72. [DOI: 10.1016/j.vetmic.2013.11.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2013] [Revised: 11/13/2013] [Accepted: 11/15/2013] [Indexed: 12/01/2022]
|
43
|
CampylobacterSpecies. Food Microbiol 2014. [DOI: 10.1128/9781555818463.ch11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
44
|
Influence of Process Parameter on Campylobacter spp. Counts on Poultry Meat in a Slaughterhouse Environment. Curr Microbiol 2014; 69:240-4. [DOI: 10.1007/s00284-014-0575-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 02/14/2014] [Indexed: 10/25/2022]
|
45
|
Recent developments in liposome-based veterinary therapeutics. ISRN VETERINARY SCIENCE 2013; 2013:167521. [PMID: 24222862 PMCID: PMC3809611 DOI: 10.1155/2013/167521] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Accepted: 09/11/2013] [Indexed: 12/25/2022]
Abstract
Recent advances in nanomedicine have been studied in the veterinary field and have found a wide variety of applications. The past decade has witnessed a massive surge of research interest in liposomes for delivery of therapeutic substances in animals. Liposomes are nanosized phospholipid vesicles that can serve as delivery platforms for a wide range of substances. Liposomes are easily formulated, highly modifiable, and easily administered delivery platforms. They are biodegradable and nontoxic and have long in vivo circulation time. This review focuses on recent and ongoing research that may have relevance for veterinary medicine. By examining the recent developments in liposome-based therapeutics in animal cancers, vaccines, and analgesia, this review depicts the current significance and future directions of liposome-based delivery in veterinary medicine.
Collapse
|
46
|
Freitas Neto OCD, Angela HLD, Soares NM, Guastalli EAL, Almeida AMD, Berchieri Junior A. Salmonella spp. in meat-type quails (Coturnix coturnix coturnix) in the State of São Paulo, Brazil. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2013. [DOI: 10.1590/s1516-635x2013000300016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
47
|
Chenu JW, Pavic A, Cox JM. A novel miniaturized most probable number method for the enumeration of Campylobacter spp. from poultry-associated matrices. J Microbiol Methods 2013; 93:12-9. [DOI: 10.1016/j.mimet.2013.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/22/2013] [Accepted: 01/25/2013] [Indexed: 10/27/2022]
|
48
|
Barua H, Biswas PK, Olsen KEP, Shil SK, Christensen JP. Molecular characterization of motile serovars of Salmonella enterica from breeder and commercial broiler poultry farms in Bangladesh. PLoS One 2013; 8:e57811. [PMID: 23483931 PMCID: PMC3590279 DOI: 10.1371/journal.pone.0057811] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Accepted: 01/25/2013] [Indexed: 11/19/2022] Open
Abstract
Contaminated poultry and poultry products are a major source of motile Salmonellae for human salmonellosis worldwide. Local circulation of any motile Salmonella serovar in poultry has a wider public health impact beyond its source of origin for being dispersed elsewhere through poultry trades or human travels. To investigate the status of motile Salmonella serovars in breeder farms in Bangladesh, multiple flocks of two breeder farms were observed for a period of six months. In addition, a cross-sectional survey was carried out to determine the prevalence and serovar distribution of motile Salmonella by randomly selecting 100 commercial broiler poultry farms. Five pooled faecal samples representing an entire housed flock of breeders or broilers were screened for presence of motile Salmonella following conventional bacteriological procedures. The Salmonella isolates obtained were subsequently serotyped, and characterized by plasmid profiling and pulsed-field gel electrophoresis (PFGE). The results revealed that both the breeder farms were positive with three Salmonella serovars: S. Virchow, S. Paratyphi B var Java (S. Java) and S. Enteritidis. Eleven of the 100 broiler farms investigated were positive for motile Salmonella, giving a farm-level prevalence of 11% (95% confidence interval 5-17%). S. Virchow and S. Kentucky were the two predominant serovars isolated from the broiler farms. The PFGE genotyping demonstrated that the isolates belonging to the same serovars were closely related due to variation in only 1-4 bands. All the S. Virchow and S. Java isolates, irrespective of breeder or broiler farm origin, were plasmid-free, except for one S. Virchow isolate from a broiler farm that harboured a 9.7 kb-sized plasmid. The S. Kentucky isolates belonged to three plasmid profiles having plasmids of four different sizes, ranging from 2.7 to 109 kb. This is the first report of any motile Salmonella serovars from breeder and commercial broiler poultry farms in Bangladesh.
Collapse
Affiliation(s)
- Himel Barua
- Department of Veterinary Disease Biology, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg, Copenhagen, Denmark.
| | | | | | | | | |
Collapse
|
49
|
Sun Y, O'Riordan MXD. Regulation of bacterial pathogenesis by intestinal short-chain Fatty acids. ADVANCES IN APPLIED MICROBIOLOGY 2013; 85:93-118. [PMID: 23942149 PMCID: PMC4029053 DOI: 10.1016/b978-0-12-407672-3.00003-4] [Citation(s) in RCA: 197] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The human gut microbiota is inextricably linked to health and disease. One important function of the commensal organisms living in the intestine is to provide colonization resistance against invading enteric pathogens. Because of the complex nature of the interaction between the microbiota and its host, multiple mechanisms likely contribute to resistance. In this review, we dissect the biological role of short-chain fatty acids (SCFA), which are fermentation end products of the intestinal microbiota, in host-pathogen interactions. SCFA exert an extensive influence on host physiology through nutritional, regulatory, and immunomodulatory functions and can also affect bacterial fitness as a form of acid stress. Moreover, SCFA act as a signal for virulence gene regulation in common enteric pathogens. Taken together, these studies highlight the importance of the chemical environment where the biology of the host, the microbiota, and the pathogen intersects, which provides a basis for designing effective infection prevention and control.
Collapse
Affiliation(s)
- Yvonne Sun
- Department of Microbiology and Immunology, University of Michigan Medical School, Ann Arbor, Michigan, USA.
| | | |
Collapse
|
50
|
Rothrock MJ, Hiett KL, Kiepper BH, Ingram K, Hinton A. Quantification of Zoonotic Bacterial Pathogens within Commercial Poultry Processing Water Samples Using Droplet Digital PCR. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/aim.2013.35055] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|