World's Best Scientists 2026 revealed!

D-Index & Metrics

Animal Science and Veterinary

D-Index
43
Citations
10962
World Ranking
908
National Ranking
19

Frank P. O'Mara 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 Frank P. O'Mara 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: 90 publications — 21st percentile

21% of scientists in this discipline score the same or lower.

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

Frank P. O'Mara 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 Frank P. O'Mara 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: 43 D-Index — 71st percentile

71% of scientists in this discipline score the same or lower.

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

Overview

What is he best known for?

The fields of study he is best known for:

  • Animal science
  • Agronomy
  • Food science

Frank P. O'Mara mainly investigates Dry matter, Animal science, Lactation, Dairy cattle and Food science. His Dry matter study is concerned with Agronomy in general. His Animal science research includes elements of Rumen, Endocrinology, Coconut oil and Forage.

His Dairy cattle research includes a combination of various areas of study, such as Ice calving and Feces. His Food science research is multidisciplinary, incorporating perspectives in Excretion, Low protein, Urine and Pasture. The study incorporates disciplines such as Urea, Randomized block design, Livestock, Animal product and Grazing in addition to Pasture.

His most cited work include:

  • Greenhouse gas mitigation in agriculture (1545 citations)
  • Policy and technological constraints to implementation of greenhouse gas mitigation options in agriculture (426 citations)
  • Relationships among milk production, energy balance, plasma analytes, and reproduction in Holstein-Friesian cows. (182 citations)

What are the main themes of his work throughout his whole career to date?

His scientific interests lie mostly in Animal science, Dry matter, Silage, Food science and Agronomy. His Animal science study combines topics from a wide range of disciplines, such as Rumen, Endocrinology and Meal. His Dry matter research is multidisciplinary, relying on both Grazing, Milk production and Beef cattle.

His Silage study combines topics in areas such as Food preservation and Forage. He has included themes like Fermentation and Agricultural science in his Agronomy study. His work on Ice calving as part of general Lactation research is often related to Dairy cattle and Milking, thus linking different fields of science.

He most often published in these fields:

  • Animal science (43.94%)
  • Dry matter (45.45%)
  • Silage (31.82%)

What were the highlights of his more recent work (between 2007-2012)?

  • Dry matter (45.45%)
  • Animal science (43.94%)
  • Grazing (21.21%)

In recent papers he was focusing on the following fields of study:

Frank P. O'Mara focuses on Dry matter, Animal science, Grazing, Silage and Food science. His Dry matter study frequently draws parallels with other fields, such as Forage. There are a combination of areas like Lactation and Genotype integrated together with his Animal science study.

His Grazing research incorporates themes from Pasture and Milk production. His Pasture research integrates issues from Excretion and Agricultural science. In his research on the topic of Silage, Sodium benzoate and Botany is strongly related with Fermentation.

Between 2007 and 2012, his most popular works were:

  • Greenhouse gas mitigation in agriculture (1545 citations)
  • Whole-farm systems modelling of greenhouse gas emissions from pastoral suckler beef cow production systems (55 citations)
  • Effect of DL-malic acid supplementation on feed intake, methane emission, and rumen fermentation in beef cattle (50 citations)

In his most recent research, the most cited papers focused on:

  • Agronomy
  • Animal science
  • Botany

Frank P. O'Mara spends much of his time researching Agricultural science, Agroforestry, Grazing, Agronomy and Land use, land-use change and forestry. The various areas that Frank P. O'Mara examines in his Agricultural science study include Hectare, Livestock and Stocking rate. Frank P. O'Mara frequently studies issues relating to Stocking and Agroforestry.

His biological study spans a wide range of topics, including Food science and Dry matter. His study in the field of Pasture is also linked to topics like Supply chain and Work. His research in Land use, land-use change and forestry intersects with topics in Manure management and Land management.

Best Publications

  • Nutritional management for enteric methane abatement: A review

    K. A. Beauchemin;M. Kreuzer;F. O'Mara;T. A. McAllister

  • The significance of livestock as a contributor to global greenhouse gas emissions today and in the near future

    Unknown

  • Relationships among milk production, energy balance, plasma analytes, and reproduction in Holstein-Friesian cows.

    J. Patton;J. Patton;D.A. Kenny;S. McNamara;S. McNamara;J.F. Mee

  • Effect of forage/concentrate ratio and dietary coconut oil level on methane output and performance of finishing beef heifers

    D. Lovett;S. Lovell;L. Stack;J. Callan

  • A systems approach to quantify greenhouse gas fluxes from pastoral dairy production as affected by management regime

    D.K. Lovett;L. Shalloo;L. Shalloo;P. Dillon;F.P. O’Mara

  • Effect of refined coconut oil or copra meal on methane output and on intake and performance of beef heifers.

    E. Jordan;D. K. Lovett;F. J. Monahan;J. Callan

  • Effect of Milking Frequency and Diet on Milk Production, Energy Balance, and Reproduction in Dairy Cows

    J. Patton;D.A. Kenny;J.F. Mee;F.P. O’Mara

  • A comparison of total collection and marker technique for the measurement of apparent digestibility of diets for growing pigs

    S Kavanagh;P.B Lynch;F O’Mara;P.J Caffrey

  • Manipulating enteric methane emissions and animal performance of late-lactation dairy cows through concentrate supplementation at pasture.

    D.K. Lovett;L.J. Stack;S. Lovell;J. Callan

  • Effect of DL-malic acid supplementation on feed intake, methane emission, and rumen fermentation in beef cattle

    P.A. Foley;D.A. Kenny;J.J. Callan;T.M. Boland

  • Effects of grass pasture and concentrate-based feeding systems for spring-calving dairy cows in early spring on performance during lactation

    E. Kennedy;M. O'Donovan;J.-P. Murphy;L. Delaby

  • Whole-farm systems modelling of greenhouse gas emissions from pastoral suckler beef cow production systems

    P.A. Foley;P. Crosson;D.K. Lovett;T.M. Boland

  • Supplementary concentrate type affects nitrogen excretion of grazing dairy cows.

    F.J. Mulligan;P. Dillon;J.J. Callan;M. Rath

  • Effects of different transition diets on dry matter intake, milk production, and milk composition in dairy cows.

    S. McNamara;F.P. O’Mara;M. Rath;J.J. Murphy

  • Dietary cation-anion difference and the health and production of pasture-fed dairy cows 2. Nonlactating periparturient cows.

    J.R. Roche;D. Dalley;P. Moate;C. Grainger

  • The effect on milk production of replacing grass silage with maize silage in the diet of dairy cows

    F.P O'Mara;J.J Fitzgerald;J.J Murphy;M Rath

  • The development of a mathematical model to investigate Irish beef production systems

    P. Crosson;P. Crosson;P. O’Kiely;F.P. O’Mara;M. Wallace

  • Effect of refined soy oil or whole soybeans on intake, methane output, and performance of young bulls1

    Unknown

  • Effect of offering rumen-protected fat supplements on fertility and performance in spring-calving Holstein–Friesian cows

    S McNamara;T Butler;D.P Ryan;J.F Mee

  • The amino acid composition of protein feedstuffs before and after ruminal incubation and after subsequent passage through the intestines of dairy cows.

    F P O'Mara;J J Murphy;M Rath

  • Effects of different transition diets on energy balance, blood metabolites and reproductive performance in dairy cows

    S. McNamara;S. McNamara;J.J. Murphy;M. Rath;F.P. O’Mara

  • The nutritive value of palm kernel meal measured in vivo and using rumen fluid and enzymatic techniques

    F.P. O’Mara;F.J. Mulligan;E.J. Cronin;M. Rath

  • In vitro total and methane gas production as influenced by rate of nitrogen application, season of harvest and perennial ryegrass cultivar

    D. K. Lovett;A. Bortolozzo;P. Conaghan;P. Conaghan;P. O'Kiely

  • The effect of early-lactation feeding strategy on the lactation performance of spring-calving dairy cows.

    E. Kennedy;E. Kennedy;M. O’Donovan;F.P. O’Mara;J.P. Murphy

  • The effect of varying levels of coconut oil on intake, digestibility and methane output from continental cross beef heifers

    E. Jordan;D. K. Lovett;M. Hawkins;J. J. Callan

  • Effect of milking frequency in early lactation on energy metabolism, milk production and reproductive performance of dairy cows

    S. McNamara;S. McNamara;J.J. Murphy;F.P. O'Mara;M. Rath

  • Greenhouse gas emissions from pastoral based dairying systems: The effect of uncertainty and management change under two contrasting production systems

    D.K. Lovett;L. Shalloo;P. Dillon;F.P. O'Mara

Frequent Co-Authors

J.J. Murphy
J.J. Murphy Teagasc - The Irish Agriculture and Food Development Authority
Padraig O'Kiely
Padraig O'Kiely Teagasc - The Irish Agriculture and Food Development Authority
Myles Rath
Myles Rath University College Dublin
J.J. Callan
J.J. Callan University College Dublin
Emer Kennedy
Emer Kennedy Teagasc - The Irish Agriculture and Food Development Authority
Michael O'Donovan
Michael O'Donovan Teagasc - The Irish Agriculture and Food Development Authority
T. M. Boland
T. M. Boland University College Dublin
Luc Delaby
Luc Delaby Institut Agro, France
Pat Dillon
Pat Dillon Teagasc - The Irish Agriculture and Food Development Authority
John R. Roche
John R. Roche University of Auckland

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Related Online Degrees & Career Pathways

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Online degree programs in related fields are rapidly growing, offering flexibility and accessibility. Students interested in the scientific and health aspects of animal and human performance might consider an online sports science degree, which provides foundational knowledge applicable across various biological and physiological contexts.

For those drawn to behavioral studies and therapy, an online program in behavioral analysis is a promising option. Accredited bcba online programs offer essential training to certify professionals who work with both humans and animals to improve behavior and communication.

Additionally, interdisciplinary approaches that incorporate mental health are important. Accredited programs, such as the online school psychology programs, prepare graduates to support educational environments, which can include schools with service animals or therapy animal programs, enhancing the welfare of both students and animals.

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