scholarly journals The influence of a diet supplemented with 20% rye and xylanase in different housing systems on the occurrence of pathogenic bacteria in broiler chickens

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ewelina Pyzik ◽  
Renata Urban-Chmiel ◽  
Agnieszka Chałabis-Mazurek ◽  
Sylwester Świątkiewicz ◽  
Anna Arczewska-Włosek ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Broiler Chickens ◽  
Pathogenic Bacteria ◽  
Intestinal Microbiome ◽  
Diffusion Method ◽  
Initial Weight ◽  
Free Range ◽  
Housing Systems ◽  
Microbiological Methods ◽  
Sanitary Conditions

AbstractSanitary conditions and diet are important elements determining the occurrence of pathogens in animals. The aim of the research was to assess the effect of an experimental diet with rye and xylanase for broiler chickens in cages and in a free-range system on the intestinal microbiome. The study was carried out in two experimental stages, the first on 224 1-d-old male Ross 308 chickens with an initial weight of 41 g, and the second on 2000 1-d-old male chickens with an initial weight of 42 g. All birds were reared to 42 d of age and fed crumbled starter (1 to 21 d) and pelleted grower–finisher (22 to 42 d) isonitrogenous and isoenergetic diets, supplemented with 20% rye and/or 200 mg/kg xylanase. Directly after slaughter, bacteria were isolated from the cloaca of birds and identified using classical microbiological methods and MALDI-TOF mass spectrometry. The antibiotic susceptibility of the bacteria was assessed by the disc diffusion method. The study showed the presence of abundant bacteria in the gut microbiome of chickens kept in both housing systems. The most frequently isolated bacteria were Escherichia coli, Enterococcus spp., Proteus spp., Campylobacter spp., and Staphylococcus spp. Antibiotic resistance was significantly higher in E. coli, Proteus spp., and Campylobacter spp. obtained from chickens from the free-range farm, but in the case of Enterococcus and Staphylococcus, resistance was higher in bacteria from caged birds. The high antibiotic resistance among pathogens of the gastrointestinal tract necessitates the search for means to control the microbiome in favour of beneficial bacteria. The significant influence of rye and xylanase on the bacterial content may be the basis for the introduction of this method to support the control of pathogens.

scholarly journals Growing Menace of Antibacterial Resistance in Clinical Isolates ofPseudomonas aeruginosain Nepal: An Insight of Beta-Lactamase Production

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Shamshul Ansari ◽  
Rabindra Dhital ◽  
Sony Shrestha ◽  
Sangita Thapa ◽  
Ram Puri ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Antibiotic Resistance ◽  
Opportunistic Pathogen ◽  
Resistance Rate ◽  
Diffusion Method ◽  
Beta Lactamase ◽  
Beta Lactam ◽  
Beta Lactam Antibiotics ◽  
Microbiological Methods ◽  
Immunosuppressed Patients

Introduction. Pseudomonas aeruginosais the most frequently isolated organism as it acts as the opportunistic pathogen and can cause infections in immunosuppressed patients. The production of different types of beta-lactamases renders this organism resistant to many commonly used antimicrobials. Therefore, the aim of this study was to document the antibiotic resistance rate inPseudomonas aeruginosaisolated from different clinical specimens.Methods. Pseudomonas aeruginosarecovered was identified by standard microbiological methods. Antibiotic susceptibility testing was performed by modified Kirby-Bauer disc diffusion method following Clinical and Laboratory Standard Institute (CLSI) guidelines and all the suspected isolates were tested for the production of ESBLs, MBLs, and AmpC.Results.Out of total (178) isolates, 83.1% were recovered from the inpatient department (IPD). Majority of the isolates mediated resistance towards the beta-lactam antibiotics, while nearly half of the isolates were resistant to ciprofloxacin. Most of the aminoglycosides used showed resistance rate up to 75% but amikacin proved to be better option. No resistance to polymyxin was observed. ESBLs, MBLs, and AmpC mediated resistance was seen in 33.1%, 30.9%, and 15.7% isolates, respectively.Conclusions. Antibiotic resistance rate and beta-lactamase mediated resistance were high. Thus, regular surveillance of drug resistance is of utmost importance.

scholarly journals Microbial Assessment of Tomatoes (Lycopersicon esculentum) Sold at Some Central Markets in Ghana

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Forson Akua Obeng ◽  
Pokuaa Belinda Gyasi ◽  
Michael Olu-Taiwo ◽  
F. Patrick Ayeh-kumi
Keyword(s):  
Antibiotic Resistance ◽  
Lycopersicon Esculentum ◽  
Pathogenic Bacteria ◽  
High Water ◽  
Diffusion Method ◽  
High Water Content ◽  
Bacterial Isolates ◽  
Disc Diffusion Method ◽  
Ciprofloxacin Resistance ◽  
Significant Health

Background. Tomato (Lycopersicon esculentum) has a high water content which predisposes it to spoilage by pathogenic bacteria that can pose significant health threats to consumers. Aim. The study aimed to determine the various pathogenic bacteria associated with tomatoes sold in some central markets in the Accra Metropolis. Method. A total of 120 tomatoes were sampled, out of which 60 fresh, firm, undamaged tomatoes and 60 spoilt tomatoes were analysed. Cut portions of the fresh and spoilt tomatoes were swabbed with sterile swabs and cultured on Blood agar, Nutrient agar, and MacConkey agar. The antibiogram of bacterial isolates was determined by Kirby-Bauer disc-diffusion method. Results. Out of the 120 tomatoes analysed, a total of 66 bacterial isolates were recovered, 68.2% were associated with spoilt tomatoes, and 31.8% were from fresh tomatoes. Klebsiella sp. (34.8%), Enterobacter sp. (24.2%), and Citrobacter sp. (7.6%) were the predominant bacteria isolated. Agbogbloshie market (36.4%) had both fresh (18.2%) and spoilt (18.2%) tomatoes contaminated, whilst Makola market (31.8%) had a higher spoilt (30.3%) tomatoes contaminated. Although none of the isolates expressed resistance to ciprofloxacin, resistance was found for ampicillin (63.1%), tetracycline (60.1%), and cefuroxime (59.1%). Conclusion. Varying levels of antibiotic resistance bacteria amongst tomatoes sold at various markets were found. Contamination might have been caused by poor sanitation, improper handling or transportation from the farms to the markets. The presence of antibiotic resistance bacteria amongst tomatoes raises concern on public health risks associated with the consumption of fresh tomatoes.

Influence of Housing Systems on Microbial Load and Antimicrobial Resistance Patterns of Escherichia coli Isolates from Eggs Produced for Human Consumption

2012 ◽  
Vol 75 (5) ◽  
pp. 847-853 ◽  
Author(s):  
ELENA ÁLVAREZ-FERNÁNDEZ ◽  
JESSICA DOMÍNGUEZ-RODRÍGUEZ ◽  
ROSA CAPITA ◽  
CARLOS ALONSO-CALLEJA
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Resistance ◽  
Housing System ◽  
Diffusion Method ◽  
Aerobic Bacteria ◽  
Human Consumption ◽  
E Coli ◽  
Free Range ◽  
Housing Systems ◽  
Enterococcus Spp

Microbial counts (aerobic bacteria, psychrotrophs, Enterobacteriaceae, coliforms, Pseudomonas spp., Enterococcus spp., Staphylococcus spp., and molds and yeasts) were obtained for the shells of 240 table eggs in northwestern Spain. Eggs from six sources (40 samples in each) were analyzed: chicken eggs from five different housing systems (conventional battery cages, barn, free range, organic, and domestic breeding) and quail eggs (cages). A total of 120 Escherichia coli strains (20 from each source) were tested by the disk diffusion method for resistance to 12 antimicrobial drugs of veterinary and human health significance. Aerobic plate counts ranged from 1.96 ± 1.0 (barn) to 3.69 ± 0.7 (domestic) log CFU/cm2. Counts for most microbial groups differed significantly between sources. Eggs from domestic production had the highest contamination loads (P < 0.05) for aerobic bacteria, Enterococcus spp., and molds and yeasts and the highest prevalence of E. coli. Twenty-three E. coli isolates (19.17%) were susceptible to all antimicrobials tested, and 80.83% were resistant to one (22.50%) or more (58.33%) antimicrobials. The housing system had a significant influence (P < 0.05) on the average resistance per strain, with the highest resistance in conventional cage (2.85) and barn (3.10) systems followed by free range (1.55) and quail (1.95). Eggs from organic (1.00) and domestic (0.75) production systems had the lowest resistance per strain. The highest prevalence of resistance was observed for the groups of antimicrobials more frequently used on poultry farms. Our results suggest that a relationship exists between the prevalence of antimicrobial resistance in E. coli strains and the more frequent use of antimicrobials in conventional (cage, barn, and free range) than in domestic and organic chicken housing systems. Education covering good sanitary practices for handling eggs to avoid cross-contamination or inadequate cooking is needed.

scholarly journals Multidrug Resistant Enteric Bacterial Pathogens in a Psychiatric Hospital in Ghana: Implications for Control of Nosocomial Infections

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Kwabena O. Duedu ◽  
George Offei ◽  
Francis S. Codjoe ◽  
Eric S. Donkor
Keyword(s):  
Antibiotic Resistance ◽  
Multidrug Resistance ◽  
Psychiatric Hospital ◽  
Nosocomial Infections ◽  
Public Health Problem ◽  
Enteric Bacteria ◽  
Multidrug Resistant ◽  
Diffusion Method ◽  
Important Public Health Problem ◽  
Microbiological Methods

Enteric bacteria are commonly implicated in hospital-acquired or nosocomial infections. In Ghana, these infections constitute an important public health problem but little is known about their contribution to antibiotic resistance. The aim of the study was to determine the extent and pattern of antibiotic resistance of enteric bacteria isolated from patients and environmental sources at the Accra Psychiatric Hospital. A total of 265 samples were collected from the study site including 142 stool and 82 urine samples from patients, 7 swab samples of door handle, and 3 samples of drinking water. Enteric bacteria were isolated using standard microbiological methods. Antibiograms of the isolates were determined using the disc diffusion method. Overall, 232 enteric bacteria were isolated. Escherichia coli was the most common (38.3%), followed by Proteus (19.8%), Klebsiella (17.7%), Citrobacter (14.7%), Morganella (8.2%), and Pseudomonas (1.3%). All isolates were resistant to ampicillin but sensitive to cefotaxime. The resistance ranged from 15.5% to 84.5%. Multidrug resistance was most prevalent (100%) among isolates of Proteus and Morganella and least prevalent among isolates of Pseudomonas (33.3%). Multidrug resistance among enteric bacteria at the study hospital is high and hence there is a need for screening before therapy to ensure prudent use of antibiotics.

scholarly journals Identification of Antibiotic Resistance Pattern, and Detection of Virulence Genes iss, and ompT in Avian Pathogenic Escherichia coli from Broiler Chickens in Chitwan, Nepal

2020 ◽  
pp. 1-12
Author(s):  
Saroj Sankhi ◽  
Rebanta Kumar Bhattarai ◽  
Hom Bahadur Basnet ◽  
Nirmal Raj Marasine ◽  
Himal Luitel ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Broiler Chickens ◽  
Virulence Genes ◽  
Diffusion Method ◽  
Resistance Pattern ◽  
Avian Pathogenic Escherichia Coli ◽  
Antibiotic Resistance Pattern ◽  
Central Nepal ◽  
Pathogenic Escherichia Coli

This study aimed to identify, evaluate the antibiotic resistance pattern and detect virulence genes iss, and ompT in avian pathogenic Escherichia coli (APEC) from broiler chickens in central Nepal. To determine the antibiotic resistance pattern of the obtained isolates, the Kirby-Bauer disc diffusion method was used with six different commercial antibiotic discs: Amikacin, Gentamycin, Ciprofloxacin, Doxycycline, Chloramphenicol and Levofloxacin. A polymerase chain reaction (PCR) assay was used for the selected isolates (n=40) to screen the presence of the iss and ompT genes after the extraction of DNA using the boiling method Out of 60 suspected Colibacillosis liver samples, 40 were confirmed as E. coli positive The antibiogram profile revealed maximum resistance to Doxycycline (87.5%), followed by Levofloxacin (72.5%), Ciprofloxacin (67.5%), Chloramphenicol (40.0%), Gentamycin (32.5%) and Amikacin (10.0%).. The presence of the iss and ompT genes was found to be 100.0% and 90.0%, respectively. APEC was found to be highly resistant to most of the antibiotics. Virulence-associated genes iss and ompT were obtained at high percentages from Colibacillosis suspected broiler chickens in Chitwan, Nepal. These finding suggests that the judicial use of antimicrobials is compulsory to check antibiotic resistance and Colibacillosis outbreaks in poultry farms.

Antibiotic Resistance Profiling of Salmonella sp. isolated from African Catfish (Clarias gariepinus)

2021 ◽  
Vol 16 (3) ◽  
pp. 44-47
Author(s):  
P.T. Fowoyo
Keyword(s):  
Antibiotic Resistance ◽  
Pathogenic Bacteria ◽  
Clarias Gariepinus ◽  
Fish Farming ◽  
Selective Medium ◽  
Diffusion Method ◽  
African Catfish ◽  
Fresh Water Fish ◽  
Peptone Water ◽  
Amoxicillin Clavulanic Acid

The African catfish (Clarias gariepinus) is an important fresh water fish consumed by a large percentage of the populace globally and it may be contaminated by pathogenic bacteria such as Salmonella sp. In this study, a total of fifteen (15) samples of African catfish were collected from different markets in Lokoja, Nigeria. The Salmonella sp. were isolated from the catfish samples by pre-enrichment in peptone water and subsequent inoculation on selective medium namely brilliant-green agar (BGA), bismuth sulphite agar (BSA) and Salmonella-Shigella agar (SSA). The Salmonella isolates were tested for susceptibility to 10 different commercially available antibiotics using the disc diffusion method. A total of thirty-four Salmonella species was isolated. The percentage occurrence of Salmonella sp. in the catfishes examined was very high (80%). The incidence of Salmonella sp. in the intestine (86.7%) of the catfish was higher than for the gills (66.7%) and the skin (73.3%). Majority of the isolates were resistant to Amoxicillin, Sulfomethoxazole-trimethoprim, Amoxicillin-clavulanic acid and Streptomycin. This study therefore demonstrated the occurrence of Salmonella species in African catfish with some exhibiting antibiotic resistance. Thus, there is a potential risk of transmission of drug resistant Salmonella species to man when contaminated catfish is consumed. The use of antibiotics in fish farming should be regulated so as to decrease antibiotic residues in fish.

scholarly journals ISOLATION, IDENTIFICATION AND ANTIBIOTIC RESISTANCE OF AEROMONAS SPP. AND SALMONELLA SPP. FROM THE FRESH WATER LOACH, LEPIDOCEPHALICHTHYS GUNTEA AND WATER OF TERAI RIVER LOTCHKA, WEST BENGAL, INDIA

2013 ◽  
Vol 58 (1-2) ◽  
pp. 5-17 ◽  
Author(s):  
Rudra Prasad Roy ◽  
Min Bahadur ◽  
Sudip Barat
Keyword(s):  
Antibiotic Resistance ◽  
Fresh Water ◽  
Pathogenic Bacteria ◽  
West Bengal ◽  
Penicillin G ◽  
Diffusion Method ◽  
Body Parts ◽  
Bacterial Isolates ◽  
Salmonella Spp ◽  
Antibiotic Susceptibility Test

Abstract An investigation was conducted to identify the bacterial isolates and to study the antibiotic resistance patterns of Aeromonas spp. and Salmonella spp. from the skin, gills, and gut of the fresh water loach, Lepidocephalichthys guntea (HAMILTON BUCHANAN) and water sampled from four different sites along the River Lotchka in Darjeeling District, West Bengal, India. Isolated bacteria were identified by different biochemical procedures, and Polymerase Chain Reaction was performed using genus specific 16S rDNA primers for confirmation of identification of Aeromonas spp. and Salmonella spp. Antibiotic susceptibility test of bacterial isolates was also done by Disc Diffusion method. A total of 49 Aeromonas spp. and 24 Salmonella spp. were isolated from tested samples. Maximum resistance was exhibited for Penicillin-G, Ampicillin, and Cephalothin (>75% resistant Aeromonas spp. and >60% Salmonella spp. in the four different sites of river and body parts of fish). Ciprofloxacin and Tetracycline resistance was almost nil. The results indicated that the river water and resident fish were contaminated with multi-antibiotic resistant enteric pathogenic bacteria. This study, thus, provides valuable information for making policy decisions aimed at reducing microbial contamination of fish and the indiscriminate use of antibiotics.

scholarly journals Plasmid-Mediated Antibiotic-Resistant Pattern of Lactobacillus spp. Isolated From Dairy Products

2021 ◽  
Vol 8 (1) ◽  
pp. 1-4
Author(s):  
Fatemeh Shafiei Seifabadi ◽  
Majid Baserisalehi
Keyword(s):  
Antibiotic Resistance ◽  
Dairy Products ◽  
Pathogenic Bacteria ◽  
Dairy Product ◽  
Antibiotic Resistance Genes ◽  
Diffusion Method ◽  
Disk Diffusion Method ◽  
Antibiotic Resistant ◽  
Resistant Genes ◽  
Susceptibility Assay

Background: Microorganisms have potent activity for transferring antibiotic-resistant genes with either chromosomally- or plasmid-mediated characteristics. The purpose of this study was to isolate Lactobacillus from different commercial products and evaluate their potential in antibiotic-resistant development. Chromosomally-or plasmid-mediated resistant genes were investigated as well. Methods: In total, Lactobacillus strains were isolated from 20 commercial dairy product samples such as cheese and yoghurt. The isolates were phenotypic and molecularly identified and their antibiotic-resistant properties were assessed by the disk-diffusion method. Finally, the plasmid-mediated antibiotic resistant characters of the isolates were evaluated by plasmid curing via evaluated temperatures and acridine orange methods. Results: Five strains Lactobacillus paracasei, L. rhamnosus, L. casei, L. plantarum, and L. fermentum were isolated different products. The results of the antibiotic susceptibility assay indicated that all strains were susceptible to amoxicillin and imipenem and resistant to ciprofloxacin and vancomycin. Furthermore, different responses were observed among the isolates against streptomycin and gentamicin. The evaluation of plasmid-mediated antibiotic resistance in the isolates revealed that streptomycin and gentamicin-resistant characters were of plasmid-mediated type in L. rhamnosus and L. plantarum strains. Conclusions: In general, our finding demonstrated that some commercial Lactobacillus strains harboured antibiotic-resistant genes. These genes can be located either in chromosome or plasmid group. Hence, the frequency of antibiotic-resistant pathogenic bacteria might be increased after consuming some dairy products because of the horizontal transfer of antibiotic-resistance genes among the bacteria.

scholarly journals Possible Bacteria Pathogens Found in the Internal Surface of Ladies Handbags in Umuahia, Abia State, South-Eastern Nigeria

2020 ◽  
pp. 66-73
Author(s):  
Nwankwo E.O. ◽  
Keyword(s):  
Pathogenic Bacteria ◽  
Culture Media ◽  
Bacterial Pathogens ◽  
Internal Surface ◽  
Health Concern ◽  
Diffusion Method ◽  
Biochemical Tests ◽  
Salmonella Spp ◽  
Coagulase Negative Staphylococci ◽  
Microbiological Methods

Bacteria including the pathogenic species have been isolated from fomites, these organisms are sometimes multidrug resistant and are of public health concern. It is therefore important to isolate and identify potential bacterial pathogens associated with the internal surface of ladies handbags, in Umuahia, Abia state. One hundred and forty swabbed samples were collected from the ladies hand bags in different groups of individuals which include; Nurses, civil servants, students and market women. Also the handbags from which the samples were collected includes: Leather, Cotton, Nylon and Polyester and velvet handbags. The bags were swabbed with sterile swab sticks and inoculated on different types of culture media and incubated at 37o C for 24 hours. Bacterial isolates were identified using standard microbiological methods including biochemical tests before subjecting isolates to different antimicrobial sensitivity test that was carried out by disc diffusion method. The following bacteria were isolated from the internal surface of the handbags, Coagulase Negative Staphylococci 6(2.6%), Escherichia coli 36(15.7%), Klebsiella spp. 14(6.1%), Staphylococcus aureus 49(21.3%), Bacillus spp. 48(20.9%), Pseudomonas aeruginosa 5(2.2%), Proteus spp. 5(2.2%), streptococcus spp. 31(13.5), Micrococcus spp. 20(8.7%), Salmonella spp. 3(1.3%) and Enterococcus faecalis 13(5.7%). Most of the isolates were sensitive to levofloxacin, gentamicin, norfloxacin, ciprofloxacin and resistant to ampiclox, chloramphenicol and erythromycin. Potentially pathogenic bacteria resistant to multiple antibiotics can be spread by hand contact from ladies handbags. Keywords: Bacterial pathogens, ladies handbags, antibiogram

scholarly journals Microorganisms Isolated from Wound Samples and Their Antibiotic Resistance Rates

ANKEM Dergisi ◽  
2021 ◽  
Author(s):  
Ezgi Köse ◽  
Emel Çalışkan ◽  
Nagihan Memiş ◽  
Betül Dönmez ◽  
Pelin Duran
Keyword(s):  
Antibiotic Resistance ◽  
Wound Infection ◽  
Antibiotic Susceptibility ◽  
Automated System ◽  
Diffusion Method ◽  
Candida Spp ◽  
Coagulase Negative Staphylococci ◽  
Pseudomonas Spp ◽  
Microbiological Methods ◽  
Resistance Rates

In this study, it was aimed to contribute to available epidemiological data and guide empirical treatment by determining the distribution and antibiotic susceptibility of pathogenic microorganisms isolated from wound samples sent to the microbiology laboratory of our hospital. The agents of wound infection sent to our laboratory between 02.01.2017 and 20.07.2020 were retrospectively analyzed. The microorganisms grown were identified by conventional microbiological methods together with automated system. Antibiotic susceptibility testing was done by Kirby-Bauer disk diffusion method and an automated system and evaluated according to EUCAST criteria. Of the 956 bacteria isolated from 722 samples, 370 (39 %) were order Enterobacterales, 286 (30 %) were Gram positive cocci, 134 (14 %) were Pseudomonas spp., 83 (9 %) were Acinetobacter baumannii and 27 (3 %) were Candida spp. Vancomycin, teicoplanin and linezolid resistance were not found in staphylococci and enterococci. The most effective antibiotic against Staphylococcus aureus was trimethoprim-sulfamethoxazole (TMP-SXT) (11 %), and gentamicin (30 %) and TMP-SXT (28 %) for coagulase negative staphylococci (CNS). Ciprofloxacin (48 %) and levofloxacin (58 %) resistance was higher in enterococci compared to other antibiotics. In addition, Klebsiella spp. strains have higher resistance rates than other Enterobacterales genus strains while A. baumannii and Pseudomonas spp. strains had the lowest resistance rate against colistin (1 %). Antibiotic resistance was higher in intensive care units than in other clinics, except for enterococci. In our study, it was observed that many species of bacteria and fungi could be an agent in wound infection, and high rates of resistance developed against antibiotics. Therefore, it was thought that the treatments should be regulated by performing culture and antibiogram procedures on all samples for which wound infection is suspected.

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