Effect of Bedding Materials on Concentration of Odorous Compounds and Escherichia coli in Beef Cattle Bedded Manure Packs

2013 ◽  
Vol 42 (1) ◽  
pp. 65-75 ◽  
Author(s):  
Mindy J. Spiehs ◽  
Tami M. Brown-Brandl ◽  
David B. Parker ◽  
Daniel N. Miller ◽  
Elaine D. Berry ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Beef Cattle ◽  
Odorous Compounds ◽  
Bedding Materials

scholarly journals Prevalence of Escherichia coli O157:H7 in beef cattle at slaughter and beef carcasses at retail shops in Ethiopia

2017 ◽  
Vol 17 (1) ◽  
Author(s):  
Rosa Abdissa ◽  
Woynshet Haile ◽  
Akafete Teklu Fite ◽  
Ashenafi Feyisa Beyi ◽  
Getahun E. Agga ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Beef Cattle ◽  
Escherichia Coli O157 ◽  
Beef Carcasses

scholarly journals Correlation of enterohemorrhagic Escherichia coli O157 prevalence in feces, hides, and carcasses of beef cattle during processing

2000 ◽  
Vol 97 (7) ◽  
pp. 2999-3003 ◽  
Author(s):  
R. O. Elder ◽  
J. E. Keen ◽  
G. R. Siragusa ◽  
G. A. Barkocy-Gallagher ◽  
M. Koohmaraie ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Beef Cattle ◽  
Enterohemorrhagic Escherichia Coli ◽  
Escherichia Coli O157

scholarly journals Prevalence of Antimicrobial Resistance and Transfer of Tetracycline Resistance Genes in Escherichia coli Isolates from Beef Cattle

2015 ◽  
Vol 81 (16) ◽  
pp. 5560-5566 ◽  
Author(s):  
Seung Won Shin ◽  
Min Kyoung Shin ◽  
Myunghwan Jung ◽  
Kuastros Mekonnen Belaynehe ◽  
Han Sang Yoo
Keyword(s):  
Escherichia Coli ◽  
South Korea ◽  
Beef Cattle ◽  
Resistance Gene ◽  
Resistance Genes ◽  
Tetracycline Resistance ◽  
Tetracycline Resistance Gene ◽  
Content Type ◽  
E Coli ◽  
Tetracycline Resistance Genes

ABSTRACTThe aim of this study was to investigate the prevalence and transferability of resistance in tetracycline-resistantEscherichia coliisolates recovered from beef cattle in South Korea. A total of 155E. coliisolates were collected from feces in South Korea, and 146 were confirmed to be resistant to tetracycline. The tetracycline resistance genetet(A) (46.5%) was the most prevalent, followed bytet(B) (45.1%) andtet(C) (5.8%). Strains carryingtet(A) plustet(B) andtet(B) plustet(C) were detected in two isolates each. In terms of phylogenetic grouping, 101 (65.2%) isolates were classified as phylogenetic group B1, followed in decreasing order by D (17.4%), A (14.2%), and B2 (3.2%). Ninety-one (62.3%) isolates were determined to be multidrug resistant by the disk diffusion method. MIC testing using the principal tetracyclines, namely, tetracycline, chlortetracycline, oxytetracycline, doxycycline, and minocycline, revealed that isolates carryingtet(B) had higher MIC values than isolates carryingtet(A). Conjugation assays showed that 121 (82.9%) isolates could transfer a tetracycline resistance gene to a recipient via the IncFIB replicon (65.1%). This study suggests that the high prevalence of tetracycline-resistantE. coliisolates in beef cattle is due to the transferability of tetracycline resistance genes betweenE. colipopulations which have survived the selective pressure caused by the use of antimicrobial agents.

Pre-slaughter control of Escherichia coli O157 in beef cattle: a simulation study

1999 ◽  
Vol 41 (1) ◽  
pp. 55-74 ◽  
Author(s):  
D Jordan ◽  
S.A McEwen ◽  
A.M Lammerding ◽  
W.B McNab ◽  
J.B Wilson
Keyword(s):  
Escherichia Coli ◽  
Beef Cattle ◽  
Simulation Study ◽  
Escherichia Coli O157

Effects of the Transportation of Beef Cattle from the Feedyard to the Packing Plant on Prevalence Levels of Escherichia coli O157 and Salmonella spp.

2002 ◽  
Vol 65 (2) ◽  
pp. 280-283 ◽  
Author(s):  
A. R. BARHAM ◽  
B. L. BARHAM ◽  
A. K. JOHNSON ◽  
D. M. ALLEN ◽  
J. R. BLANTON ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Beef Cattle ◽  
Fecal Sample ◽  
Enterohemorrhagic Escherichia Coli ◽  
Escherichia Coli O157 ◽  
Salmonella Spp ◽  
Ventral Midline ◽  
Two Samples ◽  
Potential Stressor

Two hundred steers and heifers from a large feedyard (65,000-head capacity) were used to determine the prevalence levels of enterohemorrhagic Escherichia coli O157 (EHEC O157) and Salmonella spp. prior to and after shipping to a commercial packing facility. Two samples, a ventral midline hide swab and a fecal sample, were aseptically collected from each animal 2 weeks prior to the date of transportation and at the packing plant immediately after exsanguination. Samples were collected from all trailers (n = 46) before animals were loaded for transport to the packing facility. The average prevalence levels of EHEC O157 on hides (18%) and in feces (9.5%) at the feedyard decreased (P > 0.05) at the packing plant to 4.5 and 5.5%, respectively. The average prevalence levels of Salmonella spp. on hides (6%) and in feces (18%) at the feedyard increased to 89 and 46%, respectively, upon arrival at the packing plant. Average prevalence levels for EHEC O157 and Salmonella spp. on the trailers were 5.43 and 59%, respectively. The results of this study demonstrate that transportation may be a potential stressor for cattle, as evidenced by the increased shedding of Salmonella spp.

scholarly journals Genetic diversity of Escherichia coli recovered from the oral cavity of beef cattle and their relatedness to faecal E. coli

2004 ◽  
Vol 39 (6) ◽  
pp. 523-527 ◽  
Author(s):  
M. Aslam ◽  
G.G. Greer ◽  
F.M. Nattress ◽  
C.O. Gill ◽  
L.M. McMullen
Keyword(s):  
Escherichia Coli ◽  
Genetic Diversity ◽  
Oral Cavity ◽  
Beef Cattle ◽  
E Coli

scholarly journals Antimicrobial use and resistance in Escherichia coli from healthy food-producing animals in Guadeloupe

2021 ◽  
Vol 17 (1) ◽  
Author(s):  
Gaëlle Gruel ◽  
Arantxa Sellin ◽  
Hélène Riveiro ◽  
Matthieu Pot ◽  
Sébastien Breurec ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Beef Cattle ◽  
Antimicrobial Use ◽  
Cross Sectional Survey ◽  
Isolation And Identification ◽  
Cross Sectional ◽  
Rational Use ◽  
E Coli ◽  
Field Samples ◽  
Polymerase Chain

Abstract Background Selection pressure exerted by use of antibiotics in both human and veterinary medicine is responsible for increasing antimicrobial resistance (AMR). The objectives of this study were to better understand antimicrobial use in pigs, beef cattle, and poultry on farms on Guadeloupe, French West Indies, and to acquire data on AMR in Escherichia coli in these food-producing animals. A cross-sectional survey was conducted at 45 farms on Guadeloupe, and practical use of antimicrobials was documented in declarative interviews between March and July 2018. A total of 216 fecal samples were collected between January 2018 and May 2019, comprising 124 from pigs, 75 from beef cattle, and 17 from poultry litter. E. coli isolates were obtained for further testing by isolation and identification from field samples. Antimicrobial susceptibility testing and screening for blaCTX-M, blaTEM, tetA, and tetB resistance genes by polymerase chain reaction on extracted genomic DNA were performed. Results The study showed rational use of antimicrobials, consisting of occasional use for curative treatment by veterinary prescription. Tetracycline was the most commonly used antimicrobial, but its use was not correlated to E. coli resistance. Extended-spectrum β-lactamase (ESBL) E. coli isolates were detected in 7.3% of pigs, 14.7% of beef cattle, and 35.3% of poultry. blaCTX-M-1 was the predominant gene found in ESBL-E. coli isolates (68.8%), followed by blaCTX-M-15 (31.3%). Conclusion Despite rational use of antimicrobials, the rate of ESBL-E. coli in food-producing animals in Guadeloupe, although moderate, is a concern. Further studies are in progress to better define the genetic background of the ESBL-E. coli isolates. Graphical abstract

Sign in / Sign up

Export Citation Format

Share Document