World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
35
Citations
4356
World Ranking
1752
National Ranking
503

Kreg A. Leymaster 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 Kreg A. Leymaster 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: 88 publications — 20th percentile

20% of scientists in this discipline score the same or lower.

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

Kreg A. Leymaster 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 Kreg A. Leymaster 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: 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.

Overview

Kreg A. Leymaster is affiliated with the Agricultural Research Service in the United States. Their research primarily spans the fields of Agricultural and Biological Sciences, Biochemistry, Genetics and Molecular Biology, and Medicine. This interdisciplinary focus reflects the integration of molecular and applied approaches to livestock biology and reproductive health.

The main topics Kreg A. Leymaster has worked on include:

  • Reproductive Physiology in Livestock
  • Genetic and phenotypic traits in livestock
  • Reproductive Biology and Fertility

This research attention is further reflected in Leymaster's recent publication record. One notable paper is titled "Uterine function in Meishan pigs," published in 2020 in the journal Bioscientifica Proceedings. This work addresses important aspects of reproductive biology within animal agriculture and has contributed to ongoing studies on livestock fertility and genetic influences on reproductive traits. The paper has received citations indicating its relevance to the field.

Frequent collaborators in their research include:

  • R. K. Christenson
  • J. L. Vallet
  • L. D. Young

The publication venues for Leymaster's work are limited but focused, with Bioscientifica Proceedings being a central platform for disseminating their research outcomes. This specialization suggests targeted contributions to the scientific community engaged in reproductive physiology and genetics.

Leymaster's subfields of study reflect the blend of applied agriculture and molecular science:

  • Agronomy and Crop Science
  • Genetics
  • Public Health, Environmental and Occupational Health

Through their academic output, Kreg A. Leymaster maintains a focus on livestock biology, particularly examining the physiological and genetic components that influence fertility and reproductive success. This work supports broader agricultural sciences and animal husbandry objectives by informing breeding and management practices.

Best Publications

  • Identification of the Single Base Change Causing the Callipyge Muscle Hypertrophy Phenotype, the Only Known Example of Polar Overdominance in Mammals

    Brad A. Freking;Susan K. Murphy;Andrew A. Wylie;Simon J. Rhodes

  • A second-generation linkage map of the sheep genome.

    Maurico J. de Gortari;Brad A. Freking;Rachel P. Cuthbertson;Steven M. Kappes

  • Justification of unilateral hysterectomy-ovariectomy as a model to evaluate uterine capacity in swine.

    R. K. Christenson;K. A. Leymaster;L. D. Young

  • Integration of ovulation rate, potential embryonic viability and uterine capacity into a model of litter size in swine.

    G L Bennett;K A Leymaster

  • Effects of breed, heterosis, age of dam, litter size, and birth weight on lamb mortality.

    L T Gama;G E Dickerson;G E Dickerson;L D Young;L D Young;K A Leymaster;K A Leymaster

  • Prion gene sequence variation within diverse groups of U.S. sheep, beef cattle, and deer

    Michael P Heaton;Kreg A Leymaster;Brad A Freking;Deedra A Hawk

  • Estimates of genetic parameters for feed intake, feeding behavior, and daily gain in composite ram lambs

    K. M. Cammack;Kreg A. Leymaster;T. G. Jenkins;Merlyn K. Nielsen

  • SNPs for Parentage Testing and Traceability in Globally Diverse Breeds of Sheep

    Michael P. Heaton;Kreg A. Leymaster;Theodore S. Kalbfleisch;James W. Kijas

  • Reduced Lentivirus Susceptibility in Sheep with TMEM154 Mutations

    Michael P. Heaton;Michael L. Clawson;Carol G. Chitko-Mckown;Kreg A. Leymaster

  • Evaluation of the ovine callipyge locus: I. Relative chromosomal position and gene action.

    B. A. Freking;J. W. Keele;C. W. Beattie;S. M. Kappes

  • Comparison of Texel- and Suffolk-sired crossbred lambs for survival, growth, and compositional traits

    K. A. Leymaster;T. G. Jenkins

  • Evaluation of the ovine callipyge locus: II. Genotypic effects on growth, slaughter, and carcass traits.

    B. A. Freking;J. W. Keele;Merlyn K. Nielsen;Kreg A. Leymaster

  • Genetic parameters for growth traits for a composite terminal sire breed of sheep.

    E Mousa;L D Van Vleck;K A Leymaster

  • Extensive genomic conservation of cattle microsatellite heterozygosity in sheep

    M J de Gortari;B A Freking;S M Kappes;K A Leymaster

  • Number of fetuses and conceptus growth throughout gestation in lines of pigs selected for ovulation rate or uterine capacity.

    B. A. Freking;K. A. Leymaster;J. L. Vallet;R. K. Christenson

  • Heterosis and recombination effects on pig growth and carcass traits

    J. P. Cassady;L. D. Young;K. A. Leymaster

  • Survival analysis of lamb mortality in a terminal sire composite population.

    B. R. Southey;S. L. Rodriguez-Zas;K. A. Leymaster

  • Heterosis and recombination effects on pig reproductive traits

    J. P. Cassady;L. D. Young;K. A. Leymaster

  • Evaluation of Dorset, Finnsheep, Romanov, Texel, and Montadale breeds of sheep: IV. Survival, growth, and carcass traits of F1 lambs.

    B. A. Freking;K. A. Leymaster

  • Discrete time survival analysis of lamb mortality in a terminal sire composite population.

    B. R. Southey;S. L. Rodriguez-Zas;K. A. Leymaster

Frequent Co-Authors

Timothy P. L. Smith
Timothy P. L. Smith Agricultural Research Service
John W. Keele
John W. Keele Agricultural Research Service
Gary L. Bennett
Gary L. Bennett Agricultural Research Service
Merlyn K. Nielsen
Merlyn K. Nielsen University of Nebraska–Lincoln
Gordon E. Dickerson
Gordon E. Dickerson United States Department of Agriculture
Larry A. Kuehn
Larry A. Kuehn Agricultural Research Service
Luis T. Gama
Luis T. Gama University of Lisbon
Sandra L. Rodriguez-Zas
Sandra L. Rodriguez-Zas University of Illinois at Urbana-Champaign
Steven D. Shackelford
Steven D. Shackelford Agricultural Research Service
R. M. Thallman
R. M. Thallman US Department of Agriculture

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Related Online Degrees & Career Pathways

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Career growth often involves understanding broader management roles, such as the role of athletic directors. If you aim to transition into leadership roles within animal care or related organizations, learning about how much do athletic directors make can offer insights into career progression and salary expectations beyond traditional veterinary paths.

For those interested in behavioral science, pursuing certification through bacb accredited schools is essential. These programs equip students with the credentials needed to pursue careers as Board Certified Behavior Analysts, which can complement work with animals or extend into human behavioral health.

Additionally, professionals focused on educational and psychological support roles may find value in online school psychology programs nasp approved. These accredited programs prepare graduates for careers helping students thrive, with potential crossover into animal-assisted therapy and educational outreach in veterinary sciences.

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