World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
40
Citations
5616
World Ranking
1199
National Ranking
355

Guy H. Loneragan publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Guy H. Loneragan sits on this spectrum.

29–33 publications: 1 scientists 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29 publications 442+

This scientist: 183 publications — 69th percentile

69% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

Guy H. Loneragan D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Guy H. Loneragan sits on this spectrum.

20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 40 D-Index — 64th percentile

64% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

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

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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.

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