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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 33 1950 1787 559 468 144 5565

Jan K. Shearer publications per year

The chart shows the history of publications by Jan K. Shearer between 1969 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Jan K. Shearer published across 57 years, from 1969 to 2025, averaging 2.7 papers a year. Output peaked at 17 publications in 2008. 3 of the 154 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 1969 to 2025. Vertical axis: number of publications, 0 to 17. Peak 17 publications in 2008. 1969: 1 publication 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 1 publication 1975: 0 publications 1976: 0 publications 1977: 1 publication 1978: 0 publications 1979: 0 publications 1980: 0 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: 1 publication 1991: 1 publication 1992: 2 publications 1993: 1 publication 1994: 0 publications 1995: 0 publications 1996: 0 publications 1997: 0 publications 1998: 1 publication 1999: 2 publications 2000: 4 publications 2001: 4 publications 2002: 4 publications 2003: 4 publications 2004: 5 publications 2005: 9 publications 2006: 4 publications 2007: 14 publications 2008: 17 publications 2009: 6 publications 2010: 2 publications 2011: 3 publications 2012: 4 publications 2013: 4 publications 2014: 7 publications 2015: 5 publications 2016: 10 publications 2017: 9 publications 2018: 7 publications 2019: 4 publications 2020: 6 publications 2021: 6 publications 2022: 0 publications 2023: 1 publication 2024: 1 publication 2025: 2 publications
1969 2025

154 publications in total across all disciplines

View publications per year as a table
Jan K. Shearer: publications per year, 1969 to 2025
Year Publications
1969 1
1970 0
1971 0
1972 0
1973 0
1974 1
1975 0
1976 0
1977 1
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 0
1988 1
1989 0
1990 1
1991 1
1992 2
1993 1
1994 0
1995 0
1996 0
1997 0
1998 1
1999 2
2000 4
2001 4
2002 4
2003 4
2004 5
2005 9
2006 4
2007 14
2008 17
2009 6
2010 2
2011 3
2012 4
2013 4
2014 7
2015 5
2016 10
2017 9
2018 7
2019 4
2020 6
2021 6
2022 0
2023 1
2024 1
2025 2
Total 154
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Jan K. Shearer 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 Jan K. Shearer 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, 144–148 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: 144 publications — 53rd percentile

53% 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 80 144
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
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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Jan K. Shearer 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 Jan K. Shearer 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, 33 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: 33 D-Index — 39th percentile

39% 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 33
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
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

Jan K. Shearer is affiliated with Iowa State University in the United States. Their research primarily spans the fields of Agricultural and Biological Sciences and Veterinary science, reflecting an interdisciplinary approach within these areas.

The research subfields include:

  • Small Animals
  • Genetics
  • Animal Science and Zoology
  • Plant Science
  • Agronomy and Crop Science

Shearer's work addresses several main topics, such as:

  • Animal Behavior and Welfare Studies
  • Human-Animal Interaction Studies
  • Agriculture and Farm Safety
  • Effects of Environmental Stressors on Livestock
  • Animal Disease Management and Epidemiology
  • Veterinary Pharmacology and Anesthesia
  • Veterinary Practice and Education Studies

Recent papers authored or co-authored by Shearer include:

  • "Prevalence of lameness in dairy cows: A literature review," 2023, The Veterinary Journal
  • "Determination of Dairy Cattle Euthanasia Criteria and Analysis of Barriers to Humane Euthanasia in the United States: Dairy Producer Surveys and Focus Groups," 2020, Animals
  • "Acute cortisol and behavior of dairy goat kids administered local anesthesia, topical anesthesia or systemic analgesia prior to cautery disbudding," 2020, Physiology & Behavior
  • "Determination of Dairy Cattle Euthanasia Criteria and Analysis of Barriers to Humane Euthanasia in the United States: The Veterinarian Perspective," 2020, Animals
  • "Health and Welfare Survey of 30 Dairy Goat Farms in the Midwestern United States," 2021, Animals

Frequent co-authors working with Shearer include:

  • Paul J. Plummer
  • Melissa N. Hempstead
  • Taylor M. Lindquist
  • L. Shearer
  • B.K. Wagner

The most common publication venues for Shearer's work are:

  • Animals
  • Frontiers in Veterinary Science
  • Veterinary Clinics of North America Food Animal Practice
  • The Veterinary Journal
  • Physiology & Behavior

Best Publications

  • AVMA Guidelines for the Euthanasia of Animals: 2013 Edition

    Steven Leary;Wendy Underwood;Raymond Anthony;Samuel Cartner

  • Effect of Lameness on Ovarian Activity in Postpartum Holstein Cows

    E.J. Garbarino;J.A. Hernandez;J.K. Shearer;C.A. Risco

  • Effect of lameness on the calving-to-conception interval in dairy cows

    Jorge Hernandez;Jan K. Shearer;Daniel W. Webb

  • The Impact of Lameness on Welfare of the Dairy Cow

    Helen Rebecca Whay;Jan K. Shearer

  • Effect of lameness on milk yield in dairy cows.

    Jorge Hernandez;Jan K Shearer;Daniel W Webb

  • Deep Sequencing Analysis Reveals Temporal Microbiota Changes Associated with Development of Bovine Digital Dermatitis

    Adam C. Krull;Jan K. Shearer;Patrick J. Gorden;Vickie L. Cooper

  • Effects of Feeding Complexed Zinc, Manganese, Copper, and Cobalt to Late Gestation and Lactating Dairy Cows on Claw Integrity, Reproduction, and Lactation Performance

    H.T. Ballantine;M.T. Socha;Dpl Acan D.J. Tomlinson;A.B. Johnson

  • Seasonal incidence of lameness and risk factors associated with thin soles, white line disease, ulcers, and sole punctures in dairy cattle.

    A.H. Sanders;J.K. Shearer;A. De Vries

  • Comparison of milk yield in dairy cows with different degrees of lameness

    Jorge A. Hernandez;Eduardo J. Garbarino;Jan K. Shearer;Carlos A. Risco

  • Thermoregulation and physiological responses of dairy cattle in hot weather

    J.K. Shearer;D.K. Beede

  • Functional and corrective claw trimming.

    Jan K. Shearer;Jan K. Shearer;Sarel R. van Amstel;Sarel R. van Amstel

  • Manual for Treatment and Control of Lameness in Cattle

    Sarel R. van Amstel;Jan Shearer

  • Assessment and Management of Pain Associated with Lameness in Cattle

    Jan K. Shearer;Matthew L. Stock;Sarel R. Van Amstel;Johann F. Coetzee

  • Comparison of the calving-to-conception interval in dairy cows with different degrees of lameness during the prebreeding postpartum period

    Jorge A. Hernandez;Eduardo J. Garbarino;Jan K. Shearer;Carlos A. Risco

  • Comparison of topical application of oxytetracycline and four nonantibiotic solutions for treatment of papillomatous digital dermatitis in dairy cows.

    J Hernandez;J K Shearer;J B Elliott

  • Factors associated with concentrations of immunoglobulins in colostrum at the first milking post-calving

    J. Shearer;H.O. Mohammed;J.S. Brenneman;T.Q. Tran

  • Moisture Content, Thickness, and Lesions of Sole Horn Associated with Thin Soles in Dairy Cattle

    S.R. van Amstel;J.K. Shearer;F.L. Palin

  • Effects of Sustained Release Bovine Somatotropin(Sometribove) on Animal Health in Commercial Dairy Herds

    R.J. Collier;J.C. Byatt;S.C. Denham;P.J. Eppard

  • Review of Pododermatitis circumscripta (ulceration of the sole) in dairy cows.

    Sarel R. van Amstel;Jan K. Shearer

  • Efficacy of two modified nonantibiotic formulations (Victory) for treatment of papillomatous digital dermatitis in dairy cows.

    J.K. Shearer;J. Hernandez

  • Efficacy of oxytetracycline for treatment of papillomatous digital dermatitis lesions on various anatomic locations in dairy cows.

    Jorge Hernandez;Jan K. Shearer

  • Evaluation of the efficacy of prophylactic hoof health examination and trimming during midlactation in reducing the incidence of lameness during late lactation in dairy cows.

    Jorge A. Hernandez;Eduardo J. Garbarino;Jan K. Shearer;Carlos A. Risco

  • A Highly Effective Protocol for the Rapid and Consistent Induction of Digital Dermatitis in Holstein Calves.

    Adam C. Krull;Vickie L. Cooper;John W. Coatney;Jan K. Shearer

  • Pathogenesis and Treatment of Sole Ulcers and White Line Disease.

    J.K. Shearer;Sarel R. van Amstel

  • Clinical diagnosis of foot and leg lameness in cattle.

    Jan K. Shearer;Sarel R. Van Amstel;Bruce W. Brodersen

Frequent Co-Authors

Jorge A. Hernandez
Jorge A. Hernandez University of Florida
William W. Thatcher
William W. Thatcher University of Florida
Suzanne T. Millman
Suzanne T. Millman Iowa State University
Carlos A. Risco
Carlos A. Risco University of Florida
Karin Orsel
Karin Orsel University of Calgary
Robert J Collier
Robert J Collier University of Arizona
Karen S. Schwartzkopf-Genswein
Karen S. Schwartzkopf-Genswein Agriculture and Agriculture-Food Canada
A. De Vries
A. De Vries University of Florida
Edmond A. Pajor
Edmond A. Pajor University of Calgary

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Related Online Degrees & Career Pathways

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For those aiming to advance into academic or supervisory roles within animal science or veterinary fields, pursuing an online PhD counselor education and supervision can hone leadership and educational expertise essential for training future professionals.

To directly enhance knowledge within this sector, reviewing the range of animal degrees available online helps identify specialized paths that align with individual career goals, from wildlife conservation to veterinary technology.

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