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Roger Hegarty

Roger Hegarty

D-Index & Metrics

Animal Science and Veterinary

D-Index
41
Citations
6700
World Ranking
1063
National Ranking
12

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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