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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 62 288 264 100 84 210 13768

A.J. Heinrichs publications per year

The chart shows the history of publications by A.J. Heinrichs between 1981 and 2022, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. A.J. Heinrichs published across 42 years, from 1981 to 2022, averaging 5.1 papers a year. Output peaked at 14 publications in 2016. 6 of the 213 publications appeared in the last two years.

No. of publications
5 10
Bar chart. Horizontal axis: year, 1981 to 2022. Vertical axis: number of publications, 0 to 14. Peak 14 publications in 2016. 1981: 1 publication 1982: 1 publication 1983: 0 publications 1984: 1 publication 1985: 0 publications 1986: 1 publication 1987: 4 publications 1988: 2 publications 1989: 2 publications 1990: 3 publications 1991: 6 publications 1992: 3 publications 1993: 5 publications 1994: 4 publications 1995: 1 publication 1996: 7 publications 1997: 3 publications 1998: 4 publications 1999: 4 publications 2000: 2 publications 2001: 1 publication 2002: 1 publication 2003: 9 publications 2004: 4 publications 2005: 7 publications 2006: 2 publications 2007: 11 publications 2008: 11 publications 2009: 12 publications 2010: 10 publications 2011: 12 publications 2012: 4 publications 2013: 11 publications 2014: 4 publications 2015: 10 publications 2016: 14 publications 2017: 11 publications 2018: 5 publications 2019: 4 publications 2020: 10 publications 2021: 4 publications 2022: 2 publications
1981 2022

213 publications in total across all disciplines

View publications per year as a table
A.J. Heinrichs: publications per year, 1981 to 2022
Year Publications
1981 1
1982 1
1983 0
1984 1
1985 0
1986 1
1987 4
1988 2
1989 2
1990 3
1991 6
1992 3
1993 5
1994 4
1995 1
1996 7
1997 3
1998 4
1999 4
2000 2
2001 1
2002 1
2003 9
2004 4
2005 7
2006 2
2007 11
2008 11
2009 12
2010 10
2011 12
2012 4
2013 11
2014 4
2015 10
2016 14
2017 11
2018 5
2019 4
2020 10
2021 4
2022 2
Total 213
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A.J. Heinrichs 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 A.J. Heinrichs 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, 209–213 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: 210 publications — 76th percentile

76% 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 28 210
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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A.J. Heinrichs 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 A.J. Heinrichs 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, 62 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: 62 D-Index — 91st percentile

91% 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 62
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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Research.com Recognitions

  • 2023 - Research.com Animal Science and Veterinary in United States Leader Award
  • 2018 - American Dairy Science Association Fellowship Award
  • 2009 - DuPont Pioneer Forage Award, American Dairy Science Association

Overview

A.J. Heinrichs is affiliated with Pennsylvania State University in the United States and has a research focus spanning several domains within agricultural and biological sciences, medicine, and biochemistry, genetics, and molecular biology. Their work predominantly addresses topics related to ruminant nutrition and digestive physiology, genetic and phenotypic traits in livestock, animal health and immunology, gastrointestinal disorders and treatments, viral gastroenteritis research and epidemiology, reproductive physiology in livestock, and the effects of environmental stressors on livestock.

The scientist's frequent coauthors include L.K. Mitchell, A.J. Lopez, Coleen Jones, Jason E. Lombard, and N.J. Urie, reflecting collaborative efforts primarily within the dairy science community.

Research findings by A.J. Heinrichs have been published mainly in the Journal of Dairy Science, with eleven publications, as well as in JDS Communications, Livestock Science, and the Journal of Animal Science. These venues underscore a focus on dairy science and livestock research.

Recent notable papers authored or coauthored by Heinrichs include:

  • Limiting total mixed ration availability alters eating and rumination patterns of lactating dairy cows, 2021, JDS Communications
  • Consensus recommendations on calf- and herd-level passive immunity in dairy calves in the United States, 2020, Journal of Dairy Science
  • Invited review: The importance of colostrum in the newborn dairy calf, 2022, Journal of Dairy Science
  • Comparison of immunoglobulin G absorption in calves fed maternal colostrum, a commercial whey-based colostrum replacer, or supplemented maternal colostrum, 2020, Journal of Dairy Science
  • Relationship of body weight at first calving with milk yield and herd life, 2020, Journal of Dairy Science

The scientist has received recognition through awards, including the American Dairy Science Association Fellowship Award in 2018 as well as the DuPont Pioneer Forage Award from the American Dairy Science Association in 2009.

Best Publications

  • A Simple Method for the Analysis of Particle Sizes of Forage and Total Mixed Rations

    B.P. Lammers;D.R. Buckmaster;A.J. Heinrichs

  • Modification of the Penn State Forage and Total Mixed Ration Particle Separator and the Effects of Moisture Content on its Measurements

    P.J. Kononoff;A.J. Heinrichs;D.R. Buckmaster

  • A Survey of Bovine Colostrum Composition and Colostrum Management Practices on Pennsylvania Dairy Farms

    S.I. Kehoe;B.M. Jayarao;A.J. Heinrichs

  • Predicting Body Weight and Wither Height in Holstein Heifers Using Body Measurements

    A.J. Heinrichs;G.W. Rogers;J.B. Cooper

  • Effects of supplemental yeast (Saccharomyces cerevisiae) culture on rumen development, growth characteristics, and blood parameters in neonatal dairy calves.

    K.E. Lesmeister;A.J. Heinrichs;M.T. Gabler

  • Raising dairy replacements to meet the needs of the 21st century

    A.J. Heinrichs

  • The Effect of Corn Silage Particle Size on Eating Behavior, Chewing Activities, and Rumen Fermentation in Lactating Dairy Cows

    P.J. Kononoff;A.J. Heinrichs;H.A. Lehman

  • Effects of Mannan Oligosaccharide or Antibiotics in Neonatal Diets on Health and Growth of Dairy Calves

    A.J. Heinrichs;C.M. Jones;B.S. Heinrichs

  • Effects of Corn Processing on Growth Characteristics, Rumen Development, and Rumen Parameters in Neonatal Dairy Calves

    K.E. Lesmeister;A.J. Heinrichs

  • What affects the costs of raising replacement dairy heifers : A multiple-component analysis

    P.R. Tozer;A.J. Heinrichs

  • Prediction of manure and nutrient excretion from dairy cattle.

    T. D. Nennich;J. H. Harrison;L. M. VanWieringen;Deanne Meyer

  • A prospective study of calf factors affecting first-lactation and lifetime milk production and age of cows when removed from the herd1

    A.J. Heinrichs;B.S. Heinrichs

  • Standards of weight and height for Holstein heifers.

    A.J. Heinrichs;G.L. Hargrove

  • Meta-Analysis to Assess Effect of Prepubertal Average Daily Gain of Holstein Heifers on First-Lactation Production*

    G.I. Zanton;A.J. Heinrichs

  • A meta-analysis of the effects of preweaned calf nutrition and growth on first-lactation performance

    S.L. Gelsinger;A.J. Heinrichs;C.M. Jones

  • Development and analysis of a rumen tissue sampling procedure.

    K.E. Lesmeister;P.R. Tozer;A.J. Heinrichs

  • The effect of reducing alfalfa haylage particle size on cows in early lactation.

    P.J. Kononoff;A.J. Heinrichs

  • Rumen development in the dairy calf.

    A. J. Heinrichs;K. E. Lesmeister;P. C. Garnsworthy

  • The effect of corn silage particle size and cottonseed hulls on cows in early lactation.

    P.J. Kononoff;A.J. Heinrichs

  • Development of a cost analysis spreadsheet for calculating the costs to raise a replacement dairy heifer.

    M.T. Gabler;P.R. Tozer;A.J. Heinrichs

Frequent Co-Authors

Gabriella A. Varga
Gabriella A. Varga Pennsylvania State University
T.M. Hill
T.M. Hill Provimi
Paul J. Kononoff
Paul J. Kononoff University of Nebraska–Lincoln
Chad Daniel Dechow
Chad Daniel Dechow Pennsylvania State University
J.M. Aldrich
J.M. Aldrich CSA Animal Nutrition
Andrea Formigoni
Andrea Formigoni University of Bologna
Hollis N. Erb
Hollis N. Erb Cornell University
Kenneth J. Stalder
Kenneth J. Stalder Iowa State University

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Related Online Degrees & Career Pathways

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Lastly, the human-animal bond plays a crucial role in family dynamics, making marriage and family therapy masters programs online a relevant option for individuals seeking a career that supports holistic well-being across families, including pets. These interconnected pathways highlight the multidisciplinary potential within and around Animal Science and Veterinary studies.

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