D. O’Callaghan
Impact in
- Agronomy and Crop Science top 0.5%
- Reproductive Physiology in Livestock
- Ruminant Nutrition and Digestive Physiology
- Reproductive Medicine top 2%
- Ovarian function and disorders
- Sperm and Testicular Function
Papers in
-
- Reproductive Physiology in Livestock 38
- Ruminant Nutrition and Digestive Physiology 12
- Genetics 25
- Genetic and phenotypic traits in livestock 23
- Co-authors
- M.P. Boland (10 shared papers)P. Lonergan (6 shared papers)M.P. Boland (21 shared papers)J Roche (7 shared papers)S. Snijders (6 shared papers)P. Dillon (1 shared paper)H. Yaakub (4 shared papers)Fred J. Karsch (5 shared papers)
- Journals
- Theriogenology (12 papers)Reproduction (7 papers)Animal Science (5 papers)Animal Reproduction Science (4 papers)Biology of Reproduction (4 papers)
- Partner nations
- IrelandUnited StatesHungary
In The Last Decade
D. O’Callaghan
50 papers receiving 1.4k citations
Peers
Comparison fields: 5 of 81
- Agronomy and Crop Science 1.1k
- Reproductive Medicine 223
- Genetics 689
- Public Health, Environmental and Occupational Health 582
- Animal Science and Zoology 217
Countries citing papers authored by D. O’Callaghan
This map shows the geographic impact of D. O’Callaghan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by D. O’Callaghan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites D. O’Callaghan more than expected).
Fields of papers citing papers by D. O’Callaghan
This network shows the impact of papers produced by D. O’Callaghan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by D. O’Callaghan. The network helps show where D. O’Callaghan may publish in the future.
Co-authors
The 25 scholars most cited alongside D. O’Callaghan, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 50 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 2001 | 210 | |
| 2 | 1999 | 138 | |
| 3 | 2000 | 133 | |
| 4 | 2003 | 89 | |
| 5 | 1998 | 69 | |
| 6 | 1984 | 67 | |
| 7 | 1999 | 63 | |
| 8 | Follicular growth and ovulation rate in farm animals | 1987 | 60 |
| 9 | 1991 | 56 | |
| 10 | 2001 | 53 | |
| 11 | 1999 | 52 | |
| 12 | 1993 | 46 | |
| 13 | 2000 | 45 | |
| 14 | 2001 | 43 | |
| 15 | 1997 | 40 | |
| 16 | 1994 | 33 | |
| 17 | 1999 | 32 | |
| 18 | 1997 | 21 | |
| 19 | 1991 | 20 | |
| 20 | 1998 | 19 |
About D. O’Callaghan
D. O’Callaghan is a scholar working on Agronomy and Crop Science, Genetics, Public Health, Environmental and Occupational Health, Animal Science and Zoology and Endocrine and Autonomic Systems, having authored 50 papers that have together received 1.5k indexed citations. Recurring topics across this work include Reproductive Physiology in Livestock (38 papers), Genetic and phenotypic traits in livestock (23 papers), Ruminant Nutrition and Digestive Physiology (12 papers), Reproductive Biology and Fertility (11 papers), Effects of Environmental Stressors on Livestock (6 papers), Circadian rhythm and melatonin (5 papers), Animal health and immunology (2 papers) and Animal Behavior and Welfare Studies (2 papers). The work is most often cited by research in Agronomy and Crop Science (1.1k citations), Reproductive Medicine (223 citations), Genetics (689 citations), Public Health, Environmental and Occupational Health (582 citations) and Animal Science and Zoology (217 citations). D. O’Callaghan has collaborated with scholars based in Ireland, United States and Hungary. Frequent co-authors include M.P. Boland, P. Lonergan, M.P. Boland, J Roche, S. Snijders, P. Dillon, H. Yaakub, Fred J. Karsch, J. F. Roche and R.T. Duby. Their work appears in journals such as Theriogenology, Reproduction, Animal Science, Animal Reproduction Science and Biology of Reproduction.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.