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Animal Science and Veterinary
USA
2023

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 67 213 198 69 60 326 14615
Microbiology 67 2302 2103 946 840 297 13988

Todd R. Callaway publications per year

The chart shows the history of publications by Todd R. Callaway between 1996 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Todd R. Callaway published across 30 years, from 1996 to 2025, averaging 13.2 papers a year. Output peaked at 27 publications in 2022. 28 of the 396 publications appeared in the last two years.

No. of publications
5 10 15 20 25
Bar chart. Horizontal axis: year, 1996 to 2025. Vertical axis: number of publications, 0 to 27. Peak 27 publications in 2022. 1996: 1 publication 1997: 4 publications 1998: 2 publications 1999: 2 publications 2000: 2 publications 2001: 8 publications 2002: 3 publications 2003: 16 publications 2004: 24 publications 2005: 19 publications 2006: 18 publications 2007: 18 publications 2008: 19 publications 2009: 21 publications 2010: 11 publications 2011: 14 publications 2012: 18 publications 2013: 11 publications 2014: 8 publications 2015: 10 publications 2016: 8 publications 2017: 12 publications 2018: 18 publications 2019: 18 publications 2020: 16 publications 2021: 15 publications 2022: 27 publications 2023: 25 publications 2024: 13 publications 2025: 15 publications
1996 2025

396 publications in total across all disciplines

View publications per year as a table
Todd R. Callaway: publications per year, 1996 to 2025
Year Publications
1996 1
1997 4
1998 2
1999 2
2000 2
2001 8
2002 3
2003 16
2004 24
2005 19
2006 18
2007 18
2008 19
2009 21
2010 11
2011 14
2012 18
2013 11
2014 8
2015 10
2016 8
2017 12
2018 18
2019 18
2020 16
2021 15
2022 27
2023 25
2024 13
2025 15
Total 396
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Todd R. Callaway 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 Todd R. Callaway sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 324–328 publications, is where this scientist sits. 29–33 publications: 1 scientist 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
29–33 publications 442+

This scientist: 326 publications — 92nd percentile

92% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8 326
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99
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Todd R. Callaway 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 Todd R. Callaway sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 67 D-Index, is where this scientist sits. 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: 67 D-Index — 94th percentile

94% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143
33 137
34 126
35 134
36 112
37 115
38 105
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16 67
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
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Research.com Recognitions

  • 2023 - Research.com Animal Science and Veterinary in United States Leader Award
  • 2007 - Early Career Achievement Award, American Society of Animal Science

Overview

Todd R. Callaway is affiliated with the University of Georgia in the United States. Their research primarily focuses on agricultural and biological sciences, with notable contributions across several subfields including agronomy and crop science, animal science and zoology, molecular biology, food science, and infectious diseases.

The scientist has contributed to the understanding of ruminant nutrition and digestive physiology, gut microbiota and health, animal nutrition and physiology, as well as epidemiology related to Salmonella and Campylobacter and viral gastroenteritis. Probiotics and fermented foods and genetic and phenotypic traits in livestock also feature among their topical areas of study.

Todd R. Callaway's recent publications include:

  • "Probiotics and potential applications for alternative poultry production systems" (2021, Poultry Science)
  • "Alternatives to Antibiotics: A Symposium on the Challenges and Solutions for Animal Health and Production" (2021, Antibiotics)
  • "Comparison of the ruminal and fecal microbiotas in beef calves supplemented or not with concentrate" (2020, PLoS ONE)
  • "An overview of health challenges in alternative poultry production systems" (2021, Poultry Science)
  • "The relationship between the rumen microbiome and carcass merit in Angus steers" (2020, Journal of Animal Science)

They have collaborated frequently with coauthors such as Jeferson M. Lourenço, Christina B. Welch, Nicolae Corcionivoschi, Darren S. Seidel, and Igori Balta.

Callaway's work has appeared predominantly in the Journal of Animal Science, with a total of 18 publications, followed by contributions to Microorganisms, Journal of Dairy Science, Scientific Reports, and Poultry Science.

In 2007, Todd R. Callaway received the Early Career Achievement Award from the American Society of Animal Science.

Best Publications

  • Evaluation of the bacterial diversity in the feces of cattle using 16S rDNA bacterial tag-encoded FLX amplicon pyrosequencing (bTEFAP)

    Scot E. Dowd;Todd R. Callaway;Randall D Wolcott;Yan-Yan Sun

  • Grain Feeding and the Dissemination of Acid-Resistant Escherichia coli from Cattle

    Francisco Diez-Gonzalez;Todd R. Callaway;Menas G. Kizoulis;James B. Russell

  • Probiotics, prebiotics and competitive exclusion for prophylaxis against bacterial disease.

    T. R. Callaway;T. S. Edrington;R. C. Anderson;R. B. Harvey

  • Effect of Lactic Acid Administration in the Drinking Water During Preslaughter Feed Withdrawal on Salmonella and Campylobacter Contamination of Broilers

    J. A. Byrd;B. M. Hargis;D. J. Caldwell;R. H. Bailey

  • Ionophores: Their Use as Ruminant Growth Promotants and Impact on Food Safety

    T. R. Callaway;T. S. Edrington;J. L. Rychlik;T. L. Poole

  • Diet, Escherichia coli O157:H7, and cattle: a review after 10 years.

    Todd R. Callaway;M. A. Carr;T. S. Edrington;Robin C. Anderson

  • Evaluation of bacterial diversity in the rumen and feces of cattle fed different levels of dried distillers grains plus solubles using bacterial tag-encoded FLX amplicon pyrosequencing.

    T. R. Callaway;S. E. Dowd;T. S. Edrington;R. C. Anderson

  • Gastrointestinal microbial ecology and the safety of our food supply as related to Salmonella.

    T. R. Callaway;T. S. Edrington;R. C. Anderson;J. A. Byrd

  • Effects of organic acid and monensin treatment on in vitro mixed ruminal microorganism fermentation of cracked corn

    T R Callaway;S A Martin

  • Forage Feeding to Reduce Preharvest Escherichia coli Populations in Cattle, a Review

    T.R. Callaway;R.O. Elder;J.E. Keen;R.C. Anderson

  • Foodborne Salmonella ecology in the avian gastrointestinal tract

    K.D. Dunkley;T.R. Callaway;V.I. Chalova;J.L. McReynolds

  • Isolation and Characterization of a New T-Even Bacteriophage, CEV1, and Determination of Its Potential To Reduce Escherichia coli O157:H7 Levels in Sheep

    Raul Ricardo Raya;Raul Ricardo Raya;Peter Varey;Rebecca A. Oot;Michael R. Dyen

  • Probiotic alternatives to reduce gastrointestinal infections: the poultry experience.

    G. M. Nava;L. R. Bielke;T. R. Callaway;M. P Castañeda

  • Board-invited review: Rumen microbiology: leading the way in microbial ecology.

    D. O. Krause;T. G. Nagaraja;A. D. G. Wright;T. R. Callaway

  • The effect of nisin and monensin on ruminal fermentations In vitro.

    Callaway Tr;Carneiro De Melo Am;Russell Jb

  • Bacteriophage isolated from feedlot cattle can reduce Escherichia coli O157:H7 populations in ruminant gastrointestinal tracts.

    Todd R. Callaway;Tom S. Edrington;Andrew D. Brabban;Robin C. Anderson

  • A Review of the Effect of Management Practices on Campylobacter Prevalence in Poultry Farms.

    Nompilo Sibanda;Aaron McKenna;Anne Richmond;Steven C. Ricke

  • Sodium chlorate supplementation reduces E. coli O157:H7 populations in cattle

    T R Callaway;R C Anderson;K J Genovese;T L Poole

  • Evolution of foodborne pathogens via temperate bacteriophage-mediated gene transfer

    A.D. Brabban;E. Hite;T.R. Callaway

  • What are we doing about Escherichia coli O157:H7 in cattle?

    T. R. Callaway;R. C. Anderson;T. S. Edrington;K. J. Genovese

  • Comparison of In Vitro Fermentation and Molecular Microbial Profiles of High-Fiber Feed Substrates Incubated with Chicken Cecal Inocula

    K. D. Dunkley;C. S. Dunkley;N. L. Njongmeta;T. R. Callaway

  • Seasonal shedding of Escherichia coli O157:H7 in ruminants: a new hypothesis.

    Tom S. Edrington;Todd R. Callaway;Sam E. Ives;Mike J. Engler

Frequent Co-Authors

David J. Nisbet
David J. Nisbet United States Department of Agriculture
Robin C. Anderson
Robin C. Anderson United States Department of Agriculture
Tom S. Edrington
Tom S. Edrington Diamond V (United States)
Roger B. Harvey
Roger B. Harvey United States Department of Agriculture
James A. Byrd
James A. Byrd Agricultural Research Service
Luis O. Tedeschi
Luis O. Tedeschi Texas A&M University
Steven C. Ricke
Steven C. Ricke University of Wisconsin–Madison
Gordon E. Carstens
Gordon E. Carstens Texas A&M University
Scot E. Dowd
Scot E. Dowd MR DNA (Molecular Research LP)
Leon F. Kubena
Leon F. Kubena Agricultural Research Service

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