World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
40
Citations
5616
World Ranking
1196
National Ranking
354

Overview

Guy H. Loneragan is affiliated with Texas Tech University in the United States. Their research primarily spans the fields of Biochemistry, Genetics and Molecular Biology, and Agricultural and Biological Sciences.

The scientist's work covers several subfields, including Food Science, Molecular Medicine, Pollution, Biotechnology, and Endocrinology. Their research topics focus extensively on Salmonella and Campylobacter epidemiology, Antibiotic Resistance in Bacteria, Pharmaceutical and Antibiotic Environmental Impacts, Listeria monocytogenes in Food Safety, Enterobacteriaceae and Cronobacter Research, Food Safety and Hygiene, and Viral gastroenteritis research and epidemiology.

Frequent co-authors collaborating with Guy H. Loneragan include:

  • H.M. Scott
  • Md. Kaisar Rahman
  • Babafela Awosile
  • Keri N. Norman
  • Gizem Levent

The scientist has published numerous papers in well-known venues, with repeated publications in:

  • One Health
  • Preventive Veterinary Medicine
  • Antimicrobial Agents and Chemotherapy
  • bioRxiv (Cold Spring Harbor Laboratory)
  • SSRN Electronic Journal

Recent papers authored or co-authored by Guy H. Loneragan include:

  • Antibiotic resistance among Escherichia coli and Salmonella isolated from dairy cattle feces in Texas (2021, PLoS ONE)
  • Antibiotic-Resistant Escherichia coli and Salmonella from the Feces of Food Animals in the East Province of Rwanda (2021, Animals)
  • Prevalence and Antimicrobial Susceptibility of Salmonella Serovars Isolated from U.S. Retail Ground Pork (2021, Foodborne Pathogens and Disease)
  • Antimicrobial Resistance Hidden within Multiserovar Salmonella Populations (2021, Antimicrobial Agents and Chemotherapy)
  • High-Resolution Genomic Comparisons within Salmonella enterica Serotypes Derived from Beef Feedlot Cattle: Parsing the Roles of Cattle Source, Pen, Animal, Sample Type, and Production Period (2021, Applied and Environmental Microbiology)

Best Publications

  • Prevalence of Escherichia coli O157:H7 and performance by beef feedlot cattle given Lactobacillus direct-fed microbials.

    M. M. Brashears;M. L. Galyean;G. H. Loneragan;J. E. Mann

  • Trends in mortality ratios among cattle in US feedlots.

    Guy H. Loneragan;David A. Dargatz;Paul S. Morley;Marty A. Smith

  • WGS accurately predicts antimicrobial resistance in Escherichia coli

    Gregory H. Tyson;Patrick F. McDermott;Cong Li;Yuansha Chen

  • Prevalence, outcome, and health consequences associated with persistent infection with bovine viral diarrhea virus in feedlot cattle.

    Guy H. Loneragan;Daniel U. Thomson;Donald L. Montgomery;Gary L. Mason

  • Effects of water sulfate concentration on performance, water intake, and carcass characteristics of feedlot steers.

    G H Loneragan;J J Wagner;D H Gould;F B Garry

  • Pre-harvest interventions to reduce carriage of E. coli O157 by harvest-ready feedlot cattle

    G.H. Loneragan;M.M. Brashears

  • Reduction of Escherichia coli O157 in finishing beef cattle by various doses of Lactobacillus acidophilus in direct-fed microbials.

    Spring M. Younts-Dahl;Gary D. Osborn;Michael L. Galyean;J. Daniel Rivera

  • Dietary supplementation with Lactobacillus- and Propionibacterium-based direct-fed microbials and prevalence of Escherichia coli O157 in beef feedlot cattle and on hides at harvest.

    S. M. Younts-Dahl;Michael Galyean;Guy Loneragan;N. Elam

  • Cross-sectional Study Examining Salmonella enterica Carriage in Subiliac Lymph Nodes of Cull and Feedlot Cattle at Harvest

    Sara E. Gragg;Guy H. Loneragan;Mindy M. Brashears;Terrance M. Arthur

  • Changes in antimicrobial susceptibility in a population of Escherichia coli isolated from feedlot cattle administered ceftiofur crystalline-free acid

    T. Courtney Lowrance;Guy H. Loneragan;David J. Kunze;Tammy M. Platt

  • Reduction of Escherichia coli O157 and Salmonella in feces and on hides of feedlot cattle using various doses of a direct-fed microbial.

    T. P. Stephens;G. H. Loneragan;E. Karunasena;M. M. Brashears

  • Validation of the use of organic acids and acidified sodium chlorite to reduce Escherichia coli O157 and Salmonella typhimurium in beef trim and ground beef in a simulated processing environment.

    K. Harris;M. F. Miller;G. H. Loneragan;M. M. Brashears

  • Substantial within-animal diversity of Salmonella isolates from lymph nodes, feces, and hides of cattle at slaughter.

    Sara E. Gragg;Guy H. Loneragan;Kendra K. Nightingale;Dayna M. Brichta-Harhay

  • Use of a siderophore receptor and porin proteins-based vaccine to control the burden of Escherichia coli O157:H7 in feedlot cattle.

    Daniel U. Thomson;Guy H. Loneragan;Ashley B. Thornton;Kelly F. Lechtenberg

  • Carbapenem-Resistant Bacteria Recovered from Faeces of Dairy Cattle in the High Plains Region of the USA.

    Hattie E. Webb;Marie Bugarel;Henk C. den Bakker;Kendra K. Nightingale

  • Association of excess sulfur intake and an increase in hydrogen sulfide concentrations in the ruminal gas cap of recently weaned beef calves with polioencephalomalacia.

    G H Loneragan;D H Gould;R J Callan;C J Sigurdson

  • Microbiological analysis of bovine lymph nodes for the detection of Salmonella enterica.

    Dayna M. Brichta-Harhay;Terrance M. Arthur;Joseph M. Bosilevac;Norasak Kalchayanand

  • Effects of Ceftiofur and Chlortetracycline Treatment Strategies on Antimicrobial Susceptibility and on tet(A), tet(B), and blaCMY-2 Resistance Genes among E. coli Isolated from the Feces of Feedlot Cattle

    Neena Kanwar;H. Morgan Scott;Bo Norby;Guy H. Loneragan

  • Escherichia coli O157:H7 Strains That Persist in Feedlot Cattle Are Genetically Related and Demonstrate an Enhanced Ability To Adhere to Intestinal Epithelial Cells

    Brandon A. Carlson;Kendra K. Nightingale;Gary L. Mason;John R. Ruby

  • Salmonella enterica burden in harvest-ready cattle populations from the southern high plains of the United States.

    David J. Kunze;Guy H. Loneragan;Tammy M. Platt;Mark F. Miller

Frequent Co-Authors

Mindy M. Brashears
Mindy M. Brashears Texas Tech University
David J. Nisbet
David J. Nisbet United States Department of Agriculture
Tom S. Edrington
Tom S. Edrington Diamond V (United States)
Bo Norby
Bo Norby Michigan State University
Robin C. Anderson
Robin C. Anderson United States Department of Agriculture
Todd R. Callaway
Todd R. Callaway University of Georgia
Tiruvoor G. Nagaraja
Tiruvoor G. Nagaraja Kansas State University
Paul S. Morley
Paul S. Morley Texas A&M University
J.C. Brooks
J.C. Brooks Texas Tech University
Terrance M. Arthur
Terrance M. Arthur United States Department of Agriculture

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

For students interested in pursuing studies related to Animal Science and Veterinary fields, exploring complementary online degrees can open diverse career pathways. Behavioral health and wellness play critical roles in both human and animal care environments, creating demand for specialized counseling professionals.

Programs like online psyd programs accredited offer advanced training in psychology without GRE requirements, appealing to students seeking flexibility and accreditation for clinical or research careers. Similarly, online substance abuse counseling degree programs prepare graduates to address addiction issues—a concern often intertwined with mental health conditions in veterinary professionals.

For those focused on family dynamics and support, an online masters in marriage and family therapy equips students with skills to support clients holistically, including pet owners navigating animal-related family challenges. Additionally, pursuing advanced research and leadership roles can be supported through counseling phd programs, which offer affordable paths toward doctoral-level expertise in counseling.

By integrating these related disciplines, students enhance their professional versatility and contribute to the welfare of both animals and their human communities.

Best Scientists Citing Guy H. Loneragan

Trending Scientists