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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 35 1725 1588 496 421 150 4850

John R. Middleton publications per year

The chart shows the history of publications by John R. Middleton between 1977 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John R. Middleton published across 49 years, from 1977 to 2025, averaging 3.2 papers a year. Output peaked at 14 publications in 2018. 3 of the 159 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1977 to 2025. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2018. 1977: 1 publication 1978: 4 publications 1979: 0 publications 1980: 2 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 0 publications 1988: 1 publication 1989: 0 publications 1990: 0 publications 1991: 2 publications 1992: 0 publications 1993: 0 publications 1994: 0 publications 1995: 1 publication 1996: 1 publication 1997: 3 publications 1998: 2 publications 1999: 1 publication 2000: 0 publications 2001: 3 publications 2002: 3 publications 2003: 3 publications 2004: 4 publications 2005: 13 publications 2006: 6 publications 2007: 2 publications 2008: 7 publications 2009: 4 publications 2010: 4 publications 2011: 5 publications 2012: 4 publications 2013: 6 publications 2014: 6 publications 2015: 7 publications 2016: 9 publications 2017: 6 publications 2018: 14 publications 2019: 7 publications 2020: 8 publications 2021: 7 publications 2022: 4 publications 2023: 6 publications 2024: 1 publication 2025: 2 publications
1977 2025

159 publications in total across all disciplines

View publications per year as a table
John R. Middleton: publications per year, 1977 to 2025
Year Publications
1977 1
1978 4
1979 0
1980 2
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 1
1989 0
1990 0
1991 2
1992 0
1993 0
1994 0
1995 1
1996 1
1997 3
1998 2
1999 1
2000 0
2001 3
2002 3
2003 3
2004 4
2005 13
2006 6
2007 2
2008 7
2009 4
2010 4
2011 5
2012 4
2013 6
2014 6
2015 7
2016 9
2017 6
2018 14
2019 7
2020 8
2021 7
2022 4
2023 6
2024 1
2025 2
Total 159
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John R. Middleton 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 John R. Middleton 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, 149–153 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: 150 publications — 56th percentile

56% 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 75 150
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
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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John R. Middleton 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 John R. Middleton 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, 35 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: 35 D-Index — 47th percentile

47% 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 35
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
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
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Overview

John R. Middleton is affiliated with the University of Missouri in the United States. Their research spans various fields within medicine and agricultural and biological sciences, with a particular focus on topics related to dairy cattle health and microbiology.

The scientist's recent publications include these notable papers:

  • Non-aureus Staphylococci and Bovine Udder Health: Current Understanding and Knowledge Gaps (2021), published in Frontiers in Veterinary Science
  • Invited review: Selective treatment of clinical mastitis in dairy cattle (2023), published in Journal of Dairy Science
  • Invited review: Selective use of antimicrobials in dairy cattle at drying-off (2022), published in Journal of Dairy Science
  • Selective treatment of nonsevere clinical mastitis does not adversely affect cure, somatic cell count, milk yield, recurrence, or culling: A systematic review and meta-analysis (2022), published in Journal of Dairy Science
  • Diagnosing Intramammary Infection: Meta-Analysis and Mapping Review on Frequency and Udder Health Relevance of Microorganism Species Isolated from Bovine Milk Samples (2022), published in Animals

Frequent coauthors of John R. Middleton include:

  • Pamela R. F. Adkins
  • Herman W. Barkema
  • Simon Dufour
  • S. Godden
  • Sarne De Vliegher

They have published extensively in the following venues:

  • Journal of Dairy Science (9 publications)
  • Journal of the American Veterinary Medical Association (4 publications)
  • Frontiers in Veterinary Science (1 publication)
  • Animals (1 publication)
  • Applied and Environmental Microbiology (1 publication)

John R. Middleton's main fields of study include:

  • Medicine (27 publications)
  • Agricultural and Biological Sciences (22 publications)

Subfields of particular focus are:

  • Agronomy and Crop Science (13 publications)
  • Microbiology (10 publications)
  • Food Science (9 publications)
  • Small Animals (6 publications)
  • Molecular Biology (5 publications)

The core topics in their research cover:

  • Milk Quality and Mastitis in Dairy Cows (24 publications)
  • Microbial infections and disease research (18 publications)
  • Probiotics and Fermented Foods (18 publications)
  • Animal Behavior and Welfare Studies (4 publications)
  • Antimicrobial Resistance in Staphylococcus (4 publications)
  • Bacterial biofilms and quorum sensing (4 publications)
  • Streptococcal Infections and Treatments (4 publications)

Best Publications

  • Molecular Epidemiology of Mastitis Pathogens of Dairy Cattle and Comparative Relevance to Humans

    Ruth N. Zadoks;Ruth N. Zadoks;John R. Middleton;Scott McDougall;Jorgen Katholm

  • Effect of delayed colostrum collection on colostral IgG concentration in dairy cows.

    Malantus Moore;Jeff W. Tyler;Munashe Chigerwe;Maisie E. Dawes

  • Knowledge gaps and research priorities in Staphylococcus aureus mastitis control.

    P Rainard;G Foucras;J R Fitzgerald;J L Watts

  • Subclinical hypocalcemia, plasma biochemical parameters, lipid metabolism, postpartum disease, and fertility in postparturient dairy cows.

    W.G. Chamberlin;J.R. Middleton;J.N. Spain;G.C. Johnson

  • Staphylococcus aureus antigens and challenges in vaccine development

    John R Middleton

  • Efficacy of vaccination against staphylococcal mastitis: a review and new data.

    John R Middleton;Christopher D Luby;D Scott Adams

  • Non-aureus Staphylococci and Bovine Udder Health: Current Understanding and Knowledge Gaps.

    Jeroen De Buck;Vivian Ha;Sohail Naushad;Diego B Nobrega

  • Methods for Diagnosing Mastitis.

    Pamela R.F. Adkins;John R. Middleton

  • A veterinary perspective on methicillin-resistant staphylococci.

    Leah A. Cohn;John R. Middleton

  • Association of coagulase-negative staphylococcal species, mammary quarter milk somatic cell count, and persistence of intramammary infection in dairy cattle.

    P.R. Fry;J.R. Middleton;S. Dufour;J. Perry

  • Effect of colostrum administration by use of oroesophageal intubation on serum IgG concentrations in Holstein bull calves.

    Munashe Chigerwe;Jeff W. Tyler;Loren G. Schultz;John R. Middleton

  • Comparison of four methods to assess colostral IgG concentration in dairy cows.

    Munashe Chigerwe;Jeff W. Tyler;John R. Middleton;James N. Spain

  • Efficacy of different Lysigin formulations in the prevention of Staphylococcus aureus intramammary infection in dairy heifers.

    John R Middleton;Jianneng Ma;Carol L Rinehart;Veronica N Taylor

  • Outbreak of mastitis caused by one strain of Staphylococcus aureus in a closed dairy herd.

    T H Smith;L K Fox;J R Middleton

  • Detection of low serum immunoglobulin concentrations in clinically ill calves.

    Jeff W. Tyler;Steven M. Parish;Thomas E. Besser;David C. Van Metre

  • Prevalence of non-aureus staphylococci species causing intramammary infections in Canadian dairy herds

    Larissa A.Z. Condas;Jeroen De Buck;Diego B. Nobrega;Domonique A. Carson

  • Surveillance of Staphylococcus aureus in Veterinary Teaching Hospitals

    John R. Middleton;William H. Fales;Christopher D. Luby;J. Lindsay Oaks

  • Use of somatic cell counts and California mastitis test results from individual quarter milk samples to detect subclinical intramammary infection in dairy cattle from a herd with a high bulk tank somatic cell count

    John R. Middleton;David Hardin;Barry Steevens;Richard Randle

  • Distribution of non-aureus staphylococci species in udder quarters with low and high somatic cell count, and clinical mastitis.

    Larissa A.Z. Condas;Jeroen De Buck;Diego B. Nobrega;Domonique A. Carson

  • Invited review: Selective use of antimicrobials in dairy cattle at drying-off.

    Unknown

  • Use of pulsed-field gel electrophoresis for detecting differences in Staphylococcus aureus strain populations between dairy herds with different cattle importation practices.

    J. R. Middleton;L. K. Fox;J. W. Tyler

  • Prevalence of Staphylococcus aureus and Methicillin-Resistant Staphylococcus aureus Carriage in Three Populations

    S. Kottler;J.R. Middleton;J. Perry;J.S. Weese

  • Evaluation of factors affecting serum IgG concentrations in bottle-fed calves.

    Munashe Chigerwe;Jeff W Tyler;Marin K Summers;John R Middleton

  • Molecular characterization of non-aureus Staphylococcus spp. from heifer intramammary infections and body sites.

    P.R.F. Adkins;S. Dufour;J.N. Spain;M.J. Calcutt

  • The National Mastitis Council: A Global Organization for Mastitis Control and Milk Quality, 50 Years and Beyond

    John R. Middleton;Anne Saeman;Larry K. Fox;Jason Lombard

  • Effect of prepartum intramammary treatment with pirlimycin hydrochloride on prevalence of early first-lactation mastitis in dairy heifers.

    John R. Middleton;Leo L. Timms;G. Ryan Bader;Jeffrey Lakritz

Frequent Co-Authors

Lawrence K. Fox
Lawrence K. Fox Washington State University
J.N. Spain
J.N. Spain University of Missouri
Leslie A. Lyons
Leslie A. Lyons University of Missouri
Ruth N. Zadoks
Ruth N. Zadoks University of Sydney
David J. Wilson
David J. Wilson Utah State University
Greg P. Keefe
Greg P. Keefe University of Prince Edward Island
Herman W. Barkema
Herman W. Barkema University of Calgary
Sharif S Aly
Sharif S Aly University of California, Davis
Ynte H. Schukken
Ynte H. Schukken Wageningen University & Research
Ian R. Dohoo
Ian R. Dohoo University of Prince Edward Island

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Related Online Degrees & Career Pathways

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Many professionals find fulfilling careers working directly with animals across various settings. To learn more, see the overview of careers with animals, highlighting roles that blend scientific knowledge and hands-on experience.

Students interested in leadership and sports management might also explore pathways to become an athletic director jobs, particularly in institutions that emphasize animal-related athletics or educational programs.

Additionally, those wanting to advance quickly in movement sciences and rehabilitation can benefit from accelerated learning options like the accelerated exercise science degree online. This route complements animal science careers by emphasizing health and physical performance.

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