World's Best Scientists 2026 revealed!
Roger Hegarty

Roger Hegarty

D-Index & Metrics

Animal Science and Veterinary

D-Index
41
Citations
6700
World Ranking
1066
National Ranking
12

Roger Hegarty 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 Roger Hegarty 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: 166 publications — 63rd percentile

63% of scientists in this discipline score the same or lower.

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

Roger Hegarty 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 Roger Hegarty 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: 41 D-Index — 67th percentile

67% of scientists in this discipline score the same or lower.

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

Overview

Roger Hegarty is affiliated with the University of New England in Australia. Their research focuses primarily on topics related to agricultural and biological sciences, with significant contributions in biochemistry, genetics, and molecular biology. The scientist's work spans several subfields including agronomy and crop science, animal science and zoology, ecology, and genetics, reflecting a broad engagement with biological systems and environmental interactions.

The main topics addressed in their research include ruminant nutrition and digestive physiology, genetic and phenotypic traits in livestock, agriculture sustainability and environmental impact, effects of environmental stressors on livestock, reproductive physiology in livestock, phytochemical compounds biological activities, and anaerobic digestion and biogas production.

Key recent publications authored or co-authored by Roger Hegarty include:

  • Meta-analysis quantifying the potential of dietary additives and rumen modifiers for methane mitigation in ruminant production systems, 2021, Animal nutrition
  • Prediction of enteric methane emissions by sheep using an intercontinental database, 2022, Journal of Cleaner Production
  • Effect of 3-nitrooxypropanol on enteric methane emissions of feedlot cattle fed with a tempered barley-based diet with canola oil, 2023, Journal of Animal Science
  • Evaluation of remote monitoring units for estimating body weight and supplement intake of grazing cattle, 2020, animal
  • Using the natural abundance of nitrogen isotopes to identify cattle with greater efficiency in protein-limiting diets, 2022, animal

Their frequent co-authors consist of several collaborators with multiple joint publications, including Frances Cowley, A. K. Almeida, V. H. Oddy, Gamaliel Simanungkalit, and M. J. McPhee.

Roger Hegarty's research is regularly published in specialized venues such as Journal of Animal Science, Animal Production Science, and animal, as well as Animal nutrition and the Journal of Cleaner Production. These venues reflect the multidisciplinary nature of their work integrating animal science, environmental considerations, and agricultural practices.

Best Publications

  • Cattle selected for lower residual feed intake have reduced daily methane production.

    Roger Hegarty;John Patrick Goopy;RM Herd;B McCorkell

  • Relationship between animal age, intramuscular fat, cooking loss, pH, shear force and eating quality of aged meat from sheep

    DL Hopkins;Roger Hegarty;PJ Walker;David W Pethick

  • Reducing rumen methane emissions through elimination of rumen protozoa

    R. S. Hegarty

  • Low-methane yield sheep have smaller rumens and shorter rumen retention time.

    John P. Goopy;Alastair Donaldson;Roger Hegarty;Philip E. Vercoe

  • Review: Biological determinants of between-animal variation in feed efficiency of growing beef cattle.

    G. Cantalapiedra-Hijar;M. Abo-Ismail;G.E. Carstens;L.L. Guan

  • A universal equation to predict methane production of forage-fed cattle in Australia

    E. Charmley;S. R. O. Williams;P. J. Moate;R. S. Hegarty

  • Livestock production in a changing climate: adaptation and mitigation research in Australia

    Beverley Henry;Ed Charmley;Richard Eckard;John B. Gaughan

  • Effects of dietary nitrate on fermentation, methane production and digesta kinetics in sheep.

    John Nolan;Roger Hegarty;Jennifer Shirley Hegarty;Ian Godwin

  • Lowering ruminant methane emissions through improved feed conversion efficiency

    G C Waghorn;Roger Hegarty

  • Animal board invited review: genetic possibilities to reduce enteric methane emissions from ruminants.

    N. K. Pickering;V. H. Oddy;J. Basarab;K. Cammack

  • Hydrogen production and transfer in the rumen

    RS Hegarty;R Gerdes

  • The impact of breeding to reduce residual feed intake on enteric methane emissions from the Australian beef industry

    A. R. Alford;R. S. Hegarty;P. F. Parnell;O. J. Cacho

  • Opportunities for biological control of ruminal methanogenesis

    A. V. Klieve;R. S. Hegarty

  • Genotype differences and their impact on digestive tract function of ruminants: a review

    R. S. Hegarty

  • Mechanisms for competitively reducing ruminal methanogenesis

    R. S. Hegarty

  • Effects of intensification of pastoral farming on greenhouse gas emissions in New Zealand

    C S Pinares-Patino;G C Waghorn;R S Hegarty;S O Hoskin

  • Measures of methane production and their phenotypic relationships with dry matter intake, growth, and body composition traits in beef cattle.

    R. M. Herd;P. F. Arthur;K. A. Donoghue;S. H. Bird

  • Nutritional and flock management options to reduce methane output and methane per unit product from sheep enterprises

    Roger Hegarty;D Alcock;Dorothy L Robinson;John Patrick Goopy

  • Repeatability of methane emissions from sheep

    C S Pinares-Patino;J C McEwan;K G Dodds;E A Cardenas

  • Meta-analysis quantifying the potential of dietary additives and rumen modifiers for methane mitigation in ruminant production systems.

    Amelia K. Almeida;Roger S. Hegarty;Annette Cowie

  • Potential effects of animal management and genetic improvement on enteric methane emissions, emissions intensity and productivity of sheep enterprises at Cowra, Australia

    D.J. Alcock;R.S. Hegarty

  • The effect of genotype and plane of nutrition on the rate of pH decline in lamb carcasses and the expression of metabolic enzymatic markers

    G. E. Gardner;D. W. Pethick;P. L. Greenwood;R. S. Hegarty

  • Lamb myofibre characteristics are influenced by sire estimated breeding values and pastoral nutritional system

    P. L. Greenwood;P. L. Greenwood;G. E. Gardner;R. S. Hegarty

  • Effects of available nutrition and sire breeding values for growth and muscling on the development of crossbred lambs. 1: Growth and carcass characteristics

    Roger Hegarty;C Shands;R Marchant;DL Hopkins

  • Persistence of defaunation effects on digestion and methane production in ewes

    S. H. Bird;R. S. Hegarty;R. Woodgate

  • Effects of the absence of protozoa from birth or from weaning on the growth and methane production of lambs.

    R. S. Hegarty;S. H. Bird;B. A. Vanselow;R. Woodgate

  • Effects of pasture improvement on productivity, gross margin and methane emissions of a grazing sheep enterprise

    D. Alcock;R.S. Hegarty

Frequent Co-Authors

Graham E. Gardner
Graham E. Gardner Murdoch University
D. L. Robinson
D. L. Robinson University of New England
David L. Hopkins
David L. Hopkins Charles Sturt University
David Pacheco
David Pacheco New Zealand Agricultural Greenhouse Gas Research Centre (NZAGRC)
Ermias Kebreab
Ermias Kebreab University of California, Davis
Paul L. Greenwood
Paul L. Greenwood University of New England
David W. Pethick
David W. Pethick Murdoch University
John C. McEwan
John C. McEwan AgResearch
John Nolan
John Nolan University of New England

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Related Online Degrees & Career Pathways

Exploring degrees related to Animal Science and Veterinary studies opens up diverse career pathways. For instance, those interested in the broader field of health and wellness might consider an exercise science degrees online, which provide foundational knowledge about body mechanics and physiology that complement veterinary expertise.

Leadership roles in animal-related organizations or sports programs can also be a goal. Learning about the role of an athletic director offers insights into managing teams and facilities, skills transferable to managing veterinary clinics or animal care centers.

For those interested in behavioral science, earning a bcba degree provides training to become a Board Certified Behavior Analyst, a profession that often collaborates with veterinarians to address animal behavior issues.

Additionally, psychology degrees such as nasp approved online school psychology programs highlight the importance of understanding behavioral and cognitive development, which can parallel animal behavioral studies and enhance veterinary care strategies.

Each pathway complements traditional animal science and veterinary education, offering specialized skills for a variety of roles in animal health, behavior, and organizational leadership.

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