scholarly journals Resistance Status of House Flies (Diptera: Muscidae) from Southeastern Nebraska Beef Cattle Feedlots to Selected Insecticides

2003 ◽  
Vol 96 (3) ◽  
pp. 1016-1020 ◽  
Author(s):  
Paula C.R.G. Marçon ◽  
Gustave D. Thomas ◽  
Blair D. Siegfried ◽  
John B. Campbell ◽  
Steven R. Skoda
Keyword(s):  
Beef Cattle ◽  
House Flies ◽  
Cattle Feedlots

scholarly journals Resistance Status of House Flies (Diptera: Muscidae) from Southeastern Nebraska Beef Cattle Feedlots to Selected Insecticides

2003 ◽  
Vol 96 (3) ◽  
pp. 1016-1020 ◽  
Author(s):  
Paula C.R.G. Marçon ◽  
Gustave D. Thomas ◽  
Blair D. Siegfried ◽  
John B. Campbell ◽  
Steven R. Skoda
Keyword(s):  
Beef Cattle ◽  
House Flies ◽  
Cattle Feedlots

Investigations into the Beneficial Uses of Ash from the Combustion of Manure from Beef Cattle Feedlots

2010 ◽  
Author(s):  
Robert E DeOtte ◽  
B A Stewart ◽  
Anthony J Megel ◽  
Murali Darapuneni ◽  
Clay A Robinson ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Beneficial Uses ◽  
Cattle Feedlots

SURFACE AMENDMENTS TO MINIMIZE AMMONIA EMISSIONS FROM BEEF CATTLE FEEDLOTS

2001 ◽  
Vol 44 (3) ◽  
Author(s):  
Y. Shi ◽  
D. B. Parker ◽  
N. A. Cole ◽  
B. W. Auvermann ◽  
J. E. Mehlhorn
Keyword(s):  
Beef Cattle ◽  
Ammonia Emissions ◽  
Surface Amendments ◽  
Cattle Feedlots

Clonal expansion of environmentally-adapted Escherichia coli contributes to propagation of antibiotic resistance genes in beef cattle feedlots

2018 ◽  
Vol 637-638 ◽  
pp. 657-664 ◽  
Author(s):  
Lisa Tymensen ◽  
Rahat Zaheer ◽  
Shaun R. Cook ◽  
Kingsley K. Amoako ◽  
Noriko Goji ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antibiotic Resistance ◽  
Beef Cattle ◽  
Resistance Genes ◽  
Antibiotic Resistance Genes ◽  
Clonal Expansion ◽  
Cattle Feedlots

scholarly journals Nitrous Oxide Fluxes from a Commercial Beef Cattle Feedlot in Kansas

2014 ◽  
Vol 7 ◽  
pp. ASWR.S12841 ◽  
Author(s):  
Orlando A. Aguilar ◽  
Ronaldo Maghirang ◽  
Charles W. Rice ◽  
Steven L. Trabue ◽  
Larry E. Erickson
Keyword(s):  
Nitrous Oxide ◽  
Beef Cattle ◽  
Agricultural Soils ◽  
Environmental Concern ◽  
Surface Condition ◽  
Emission Rates ◽  
Surface Conditions ◽  
Air Temperatures ◽  
Cattle Feedlots ◽  
Cattle Feedlot

Emission of greenhouse gases, including nitrous oxide (N2O), from open beef cattle feedlots is becoming an environmental concern; however, research measuring emission rates of N2O from open beef cattle feedlots has been limited. This study was conducted to quantify N2O emission fluxes as affected by pen surface conditions, in a commercial beef cattle feedlot in the state of Kansas, USA, from July 2010 through September 2011. The measurement period represented typical feedlot conditions, with air temperatures ranging from -24 to 39°C. Static flux chambers were used to collect gas samples from pen surfaces at 0, 15, and 30 minutes. Gas samples were analyzed with a gas chromatograph and from the measured concentrations, fluxes were calculated. Median emission flux from the moist/muddy surface condition was 2.03 mg m−2 hour−1, which was about 20 times larger than the N2O fluxes from the other pen surface conditions. In addition, N2O peaks from the moist/muddy pen surface condition were six times larger than emission peaks previously reported for agricultural soils.

Micrometeorological Methods for Measuring Methane Emission Reduction at Beef Cattle Feedlots: Evaluation of 3‐Nitrooxypropanol Feed Additive

2019 ◽  
Vol 48 (5) ◽  
pp. 1454-1461 ◽  
Author(s):  
S. M. McGinn ◽  
T. K. Flesch ◽  
K. A. Beauchemin ◽  
A. Shreck ◽  
M. Kindermann
Keyword(s):  
Beef Cattle ◽  
Methane Emission ◽  
Emission Reduction ◽  
Feed Additive ◽  
Cattle Feedlots

Properties of Manure Accumulations from Midwest Beef Cattle Feedlots

1975 ◽  
Vol 18 (2) ◽  
pp. 0327-0330 ◽  
Author(s):  
C. B. Gilbertson ◽  
J. R. Ellis ◽  
J. A. Nienaber ◽  
T. M. McCalla ◽  
T. J. Klopfenstein
Keyword(s):  
Beef Cattle ◽  
Cattle Feedlots

PRINCIPLES AND PRACTICES OF BEEF CATTLE FEEDLOTS

1970 ◽  
Vol 46 (4) ◽  
pp. 173-177 ◽  
Author(s):  
W. J. Pryor
Keyword(s):  
Beef Cattle ◽  
Cattle Feedlots

Fresh Steam-Flaked Corn in Cattle Feedlots Is an Important Site for Fecal Coliform Contamination by House Flies†

2015 ◽  
Vol 78 (3) ◽  
pp. 567-572 ◽  
Author(s):  
ANURADHA GHOSH ◽  
LUDEK ZUREK
Keyword(s):  
Gel Electrophoresis ◽  
Fecal Coliform ◽  
Bacterial Contamination ◽  
Pulsed Field Gel Electrophoresis ◽  
Fecal Coliforms ◽  
House Flies ◽  
E Coli ◽  
Klebsiella Spp ◽  
Important Site ◽  
Cattle Feedlots

House flies are a common pest at food animal facilities, including cattle feedlots. Previously, house flies were shown to play an important role in the ecology of Escherichia coli O157:H7; house flies in cattle feedlots carried this zoonotic pathogen and were able to contaminate cattle through direct contact and/or by contamination of drinking water and feed. Because house flies aggregate in large numbers on fresh (≤6 h) steam-flaked corn (FSFC) used in cattle feed, the aim of this study was to assess FSFC in a cattle feedlot as a potentially important site of fecal coliform contamination by house flies. House flies and FSFC samples were collected, homogenized, and processed for culturing of fecal coliforms on membrane fecal coliform agar. Selected isolates were identified by 16S rRNA gene sequencing, and representative isolates from each phylogenetic group were genotyped by pulsed-field gel electrophoresis. Fecal coliforms were undetectable in FSFC shortly (0 h) after flaking; however, in summer, after 4 to 6 h, the concentrations of fecal coliforms ranged from 1.9 × 103 to 3.7 × 104 CFU/g FSFC (mean, 1.1 ± 3.0 × 104 CFU/g). House flies from FSFC carried between 7.6 × 102 and 4.1 × 106 CFU of fecal coliforms per fly (mean, 6.0 ± 2.3 × 105 CFU per fly). Fecal coliforms were represented by E. coli (85.1%), Klebsiella spp. (10.6%), and Citrobacter spp. (4.3%). Pulsed-field gel electrophoresis demonstrated clonal matches of E. coli and Klebsiella spp. between house flies and FSFC. In contrast, in winter and in the absence of house flies, the contamination of corn by fecal coliforms was significantly (~10-fold) lower. These results indicate that FSFC is an important site for bacterial contamination by flies and possible exchange of E. coli and other bacteria among house flies. Further research is needed to evaluate the potential use of screens or blowers to limit the access of house flies to FSFC and therefore their effectiveness in preventing bacterial contamination.

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