scholarly journals Management characteristics of beef cattle production in the Northern Plains and Midwest regions of the United States

2016 ◽  
Vol 32 (6) ◽  
pp. 736-749 ◽  
Author(s):  
Senorpe Asem-Hiablie ◽  
C. Alan Rotz ◽  
Robert Stout ◽  
Kim Stackhouse-Lawson
Keyword(s):  
United States ◽  
Beef Cattle ◽  
The United States ◽  
Cattle Production ◽  
Northern Plains ◽  
Beef Cattle Production

scholarly journals 112 An environmental assessment of beef cattle production in the United States.

2018 ◽  
Vol 96 (suppl_3) ◽  
pp. 368-369
Author(s):  
S Place ◽  
A Rotz ◽  
S Asem-Hiablie ◽  
G Thoma
Keyword(s):  
United States ◽  
Beef Cattle ◽  
Environmental Assessment ◽  
The United States ◽  
Cattle Production ◽  
Beef Cattle Production

scholarly journals Environmental footprints of beef cattle production in the United States

2019 ◽  
Vol 169 ◽  
pp. 1-13 ◽  
Author(s):  
C. Alan Rotz ◽  
Senorpe Asem-Hiablie ◽  
Sara Place ◽  
Greg Thoma
Keyword(s):  
United States ◽  
Beef Cattle ◽  
The United States ◽  
Cattle Production ◽  
Environmental Footprints ◽  
Beef Cattle Production

scholarly journals Impact of “Raised without Antibiotics” Beef Cattle Production Practices on Occurrences of Antimicrobial Resistance

2017 ◽  
Vol 83 (22) ◽  
Author(s):  
Amit Vikram ◽  
Pablo Rovira ◽  
Getahun E. Agga ◽  
Terrance M. Arthur ◽  
Joseph M. Bosilevac ◽  
...  
Keyword(s):  
United States ◽  
Antimicrobial Resistance ◽  
Beef Cattle ◽  
Production Systems ◽  
Tetracycline Resistance ◽  
The United States ◽  
Metagenomic Sequencing ◽  
Cattle Production ◽  
Content Type ◽  
Beef Cattle Production

ABSTRACT The specific antimicrobial resistance (AMR) decreases that can be expected from reducing antimicrobial (AM) use in U.S. beef production have not been defined. To address this data gap, feces were recovered from 36 lots of “raised without antibiotics” (RWA) and 36 lots of “conventional” (CONV) beef cattle. Samples (n = 719) were collected during harvest and distributed over a year. AMR was assessed by (i) the culture of six AM-resistant bacteria (ARB), (ii) quantitative PCR (qPCR) for 10 AMR genes (ARGs), (iii) a qPCR array of 84 ARGs, and (iv) metagenomic sequencing. Generally, AMR levels were similar, but some were higher in CONV beef cattle. The prevalence of third-generation cephalosporin-resistant (3GCr) Escherichia coli was marginally different between production systems (CONV, 47.5%; RWA, 34.8%; P = 0.04), but the seasonal effect (summer, 92.8%; winter, 48.3%; P < 0.01) was greater. Erythromycin-resistant (ERYr) Enterococcus sp. concentrations significantly differed between production systems (CONV, 1.91 log10 CFU/g; RWA, 0.73 log10 CFU/g; P < 0.01). Levels of aadA1, ant(6)-I, bla ACI, erm(A), erm(B), erm(C), erm(F), erm(Q), tet(A), tet(B), tet(M), and tet(X) ARGs were higher (P < 0.05) in the CONV system. Aggregate abundances of all 43 ARGs detected by metagenomic sequencing and the aggregate abundances of ARGs in the aminoglycoside, β-lactam, macrolide-lincosamide-streptogramin B (MLS), and tetracycline AM classes did not differ (log2 fold change < 1.0) between CONV and RWA systems. These results suggest that further reductions of AM use in U.S. beef cattle production may not yield significant AMR reductions beyond MLS and tetracycline resistance. IMPORTANCE The majority of antimicrobial (AM) use in the United States is for food-animal production, leading to concerns that typical AM use patterns during “conventional” (CONV) beef cattle production in the United States contribute broadly to antimicrobial resistance (AMR) occurrence. In the present study, levels of AMR were generally similar between CONV and “raised without antibiotics” (RWA) cattle. Only a limited number of modest AMR increases was observed in CONV cattle, primarily involving macrolide-lincosamide-streptogramin B (MLS) and tetracycline resistance. Macrolides (tylosin) and tetracyclines (chlortetracycline) are administered in-feed for relatively long durations to reduce liver abscesses. To ensure judicious AM use, the animal health, economic, and AMR impacts of shorter duration in-feed administration of these AMs should be examined. However, given the modest AMR reductions observed, further reductions of AM use in U.S. beef cattle production may not yield significant AMR reductions beyond MLS and tetracycline resistance.

scholarly journals Management characteristics of beef cattle production in the eastern United States

2018 ◽  
Vol 34 (4) ◽  
pp. 311-325 ◽  
Author(s):  
Senorpe Asem-Hiablie ◽  
C. Alan Rotz ◽  
Robert Stout ◽  
Sara Place
Keyword(s):  
United States ◽  
Beef Cattle ◽  
Eastern United States ◽  
Cattle Production ◽  
Beef Cattle Production

scholarly journals Antibiotic Use and Resistance for Beef Cattle Producers

EDIS ◽  
2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Chad Carr ◽  
Matthew J. Hersom ◽  
K. C. Jeong ◽  
Nicolas DiLorenzo ◽  
Jason M. Scheffler ◽  
...  
Keyword(s):  
United States ◽  
Beef Cattle ◽  
Antibiotic Use ◽  
The United States ◽  
Cattle Production ◽  
Antibiotic Resistant ◽  
Fact Sheet ◽  
Animal Sciences

Antibiotic-resistant microorganisms cause millions of illnesses and cost billions of dollars in the United States each year. This 5-page fact sheet written by Chad Carr, Matt Hersom, K. C. Jeong, Nicolas DiLorenzo, Jason Scheffler, Victoria Roberts, Gina Faniola, Stephanie Miller, Haley Denney, Nahilia Williams, and Bianca McCracken and published by the UF/IFAS Department of Animal Sciences discusses the use of antibiotics in cattle production operations and answers some common questions about antibiotics and antibiotic-resistant microorganisms.  http://edis.ifas.ufl.edu/an351

520 Late-Breaking: Effect of Technology on Environmental Emissions from Four Representative U.S. Feedlots and the Beef Production System

2021 ◽  
Vol 99 (Supplement_3) ◽  
pp. 155-155
Author(s):  
Jessica Gilreath ◽  
Al Rotz ◽  
Sara Place ◽  
Greg Thoma ◽  
Tryon Wickersham
Keyword(s):  
Beef Cattle ◽  
Environmental Impacts ◽  
Production System ◽  
Energy Use ◽  
The United States ◽  
Cattle Production ◽  
Net Returns ◽  
Beef Cattle Production ◽  
Environmental Emissions ◽  
Ractopamine Hydrochloride

Abstract Our objective was to evaluate effects of technological management strategies on environmental impacts and net returns of feedlot operations in the United States. Feedlot operations were simulated with the Integrated Farm System Model (IFSM 4.6; USDA-ARS, University Park, PA) to quantify baseline environmental impacts of feedlot production and full US beef cattle production systems. Strategies simulated included: ionophore, implant, ractopamine hydrochloride, combined management (ionophore, implant, and ractopamine hydrochloride; I+I+R), lubabegron, reduced mortality rate, and improved fiber digestion. Days on feed were adjusted whenever necessary and according to production practices typical of commercial feedlots. Subsequently, annual number of cattle finished by the operation was adjusted according to days on feed to maintain consistent one-time capacities. Mitigation strategies were individually modeled and simulated in IFSM for each feedlot operation to calculate intensities (expressed per kg gain) for greenhouse gas (GHG) emissions, fossil energy use, blue water consumption, and reactive nitrogen loss. Additionally, net returns to management were estimated for each feedlot operation. Feedlots were then integrated with simulations of cow-calf, stocker, and backgrounding operations to estimate environmental intensities (expressed per kg carcass weight) for the full beef cattle production system. Carbon emission intensity was reduced most using the I+I+R strategy (10%), followed by implant (6%) and ionophore (5%) strategies alone. Similarly, energy use intensity was reduced the greatest by I+I+R (9%), ionophore (5%), and implants (4%). Reductions in water use intensity were also greatest using I+I+R (9%). Net returns increased for all strategies compared to baseline net return with the greatest improvements observed for I+I+R ($114/finished animal) and implants ($66/animal). Consistent results were observed for all strategies simulated across all four environmental intensities when quantified for the full cattle production system. Implementing I+I+R (7%), ractopamine hydrochloride (4%), and lubabegron (4%) in feedlots resulted in the greatest reductions in environmental emissions.

scholarly journals Management characteristics of beef cattle production in the western United States

2017 ◽  
Vol 33 (4) ◽  
pp. 461-471 ◽  
Author(s):  
Senorpe Asem-Hiablie ◽  
C. Alan Rotz ◽  
Robert Stout ◽  
Kathleen Fisher
Keyword(s):  
United States ◽  
Beef Cattle ◽  
Western United States ◽  
Cattle Production ◽  
Beef Cattle Production

Environmental impacts of Brazilian beef cattle production in the Amazon, Cerrado, Pampa, and Pantanal biomes

2021 ◽  
pp. 127750
Author(s):  
Milene Dick ◽  
Marcelo Abreu da Silva ◽  
Rickiel Rodrigues Franklin da Silva ◽  
Otoniel Geter Lauz Ferreira ◽  
Manoel de Souza Maia ◽  
...  
Keyword(s):  
Beef Cattle ◽  
Environmental Impacts ◽  
Cattle Production ◽  
Beef Cattle Production

Identification of breeding objectives using a bioeconomic model for a beef cattle production system in Uruguay

2014 ◽  
Vol 160 ◽  
pp. 21-28 ◽  
Author(s):  
Maria Isabel Pravia ◽  
Olga Ravagnolo ◽  
Jorge Ignacio Urioste ◽  
Dorian J. Garrick
Keyword(s):  
Beef Cattle ◽  
Production System ◽  
Bioeconomic Model ◽  
Cattle Production ◽  
Breeding Objectives ◽  
Beef Cattle Production
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