Citation Rankings
Highly Cited Researchers
Medical and Health Sciences / Veterinary Sciences Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
ethnoveterinary medicine
biological activity
toxicity
medicinal plants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,731
8,166
0.641
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Ticks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,638
4,415
0.302
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Veterinary Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,254
3,265
0.522
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Animal science
Production animal physiology
Meat science
Agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,216
2,995
0.482
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,523
2,482
0.705
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Veterinary epidemiology
Animal diseases
Zoonotic diseases
Veterinary medicine
Infectious diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,521
2,310
0.511
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Ruminant Nutrition
Pasture Science
Animal Production
Feed Additives
GHG emissions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,310
1,761
0.762
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Veterinary Wildlife and Conservation Medicine
SDG - Life on Land and Climate Action
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,329
1,758
0.528
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Companion animal medicine
infectious disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,302
1,554
0.471
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Animal Science
Animal breeding
Livestock genomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,735
1,514
0.554
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Ruminant nutrition
Dairy science
Feed additives
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,105
1,452
0.468
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Veterinary Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,829
1,357
0.480
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
veterinary science
horses
pathology
toxicology
viruses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,335
1,298
0.389
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
animal science
animal breeding and genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,632
1,160
0.711
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Molecular Veterinary Parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,498
1,143
0.458
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Animal Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,225
1,044
0.324
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Comparative Physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,207
899
0.745
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Microbiology
Antimicrobial activity
Oral Microbiology
Phytomedicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,325
851
0.642
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Poultry nutrition
welfare
production
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,194
812
0.680
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Foodborne zoonotic pathogens(Shiga toxin-producing Escherichia coli
Campylobacter
Salmonella) and bacteriophages molecular epi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,021
734
0.719
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Veterinary vaccines
ticks
acaricides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,337
733
0.548
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
veterinary pathology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,299
713
0.549
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Veterinary virology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,501
614
0.409
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Molecular Parasitolgy
Veterinary Parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,192
480
0.403
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Ruminant health. Cattle production and reproduction. Veterinary education. Wildlife conservation.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
659
456
0.692
* Last 6 Years Citation Counts Rankings
Rankings
48,841
201
14
Ranking Based On Selection: 1
Lyndy Mcgaw
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,731
8,166
0.641
ethnoveterinary medicine
biological activity
toxicity
medicinal plants
* Last 6 Years Citation Counts Rankings
Rankings
109,921
463
41
Ranking Based On Selection: 2
Ivan Horak
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,638
4,415
0.302
* Last 6 Years Citation Counts Rankings
Rankings
156,804
682
59
Ranking Based On Selection: 3
Geoffrey T Fosgate
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,254
3,265
0.522
Veterinary Epidemiology
* Last 6 Years Citation Counts Rankings
Rankings
172,780
747
65
Ranking Based On Selection: 4
Edward C. Webb
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,216
2,995
0.482
Animal science
Production animal physiology
Meat science
Agriculture
* Last 6 Years Citation Counts Rankings
Rankings
211,674
934
77
Ranking Based On Selection: 5
MN Emmambux|Mohammad Naushad
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,523
2,482
0.705
* Last 6 Years Citation Counts Rankings
Rankings
228,063
1,003
87
Ranking Based On Selection: 6
Peter N Thompson
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,521
2,310
0.511
Veterinary epidemiology
Animal diseases
Zoonotic diseases
Veterinary medicine
Infectious diseases
* Last 6 Years Citation Counts Rankings
Rankings
297,988
1,359
114
Ranking Based On Selection: 7
Abubeker Hassen
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,310
1,761
0.762
Ruminant Nutrition
Pasture Science
Animal Production
Feed Additives
GHG emissions
* Last 6 Years Citation Counts Rankings
Rankings
298,437
1,363
115
Ranking Based On Selection: 8
Leith Meyer
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,329
1,758
0.528
Veterinary Wildlife and Conservation Medicine
SDG - Life on Land and Climate Action
* Last 6 Years Citation Counts Rankings
Rankings
333,869
1,541
137
Ranking Based On Selection: 9
Andrew Leisewitz
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,302
1,554
0.471
Companion animal medicine
infectious disease
* Last 6 Years Citation Counts Rankings
Rankings
341,710
1,582
145
Ranking Based On Selection: 10
Este Van Marle-Koster
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,735
1,514
0.554
Animal Science
Animal breeding
Livestock genomics
* Last 6 Years Citation Counts Rankings
Rankings
354,425
1,650
152
Ranking Based On Selection: 11
Lourens Erasmus
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,105
1,452
0.468
Ruminant nutrition
Dairy science
Feed additives
* Last 6 Years Citation Counts Rankings
Rankings
375,673
1,786
163
Ranking Based On Selection: 12
Christo J Botha
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,829
1,357
0.480
Veterinary Toxicology
* Last 6 Years Citation Counts Rankings
Rankings
389,825
1,860
166
Ranking Based On Selection: 13
June Williams
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,335
1,298
0.389
veterinary science
horses
pathology
toxicology
viruses
* Last 6 Years Citation Counts Rankings
Rankings
426,878
2,032
185
Ranking Based On Selection: 14
Carina Visser
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,632
1,160
0.711
animal science
animal breeding and genetics
* Last 6 Years Citation Counts Rankings
Rankings
431,800
2,061
189
Ranking Based On Selection: 15
Nicola Collins
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,498
1,143
0.458
Molecular Veterinary Parasitology
* Last 6 Years Citation Counts Rankings
Rankings
462,718
2,218
213
Ranking Based On Selection: 16
Norman Casey
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,225
1,044
0.324
* Last 6 Years Citation Counts Rankings
Rankings
515,507
2,544
240
Ranking Based On Selection: 17
Edward Snelling
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,207
899
0.745
Comparative Physiology
* Last 6 Years Citation Counts Rankings
Rankings
535,085
2,662
254
Ranking Based On Selection: 18
FS Botha
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,325
851
0.642
Microbiology
Antimicrobial activity
Oral Microbiology
Phytomedicine
* Last 6 Years Citation Counts Rankings
Rankings
552,028
2,752
270
Ranking Based On Selection: 19
Thobela Nkukwana
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,194
812
0.680
Poultry nutrition
welfare
production
* Last 6 Years Citation Counts Rankings
Rankings
588,620
2,986
289
Ranking Based On Selection: 20
Musafiri Karama
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,021
734
0.719
Foodborne zoonotic pathogens(Shiga toxin-producing Escherichia coli
Campylobacter
Salmonella) and bacteriophages molecular epi
* Last 6 Years Citation Counts Rankings
Rankings
588,978
2,988
290
Ranking Based On Selection: 21
Christine Maritz Olivier
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,337
733
0.548
Veterinary vaccines
ticks
acaricides
* Last 6 Years Citation Counts Rankings
Rankings
599,194
3,050
300
Ranking Based On Selection: 22
Sarah Clift
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,299
713
0.549
veterinary pathology
* Last 6 Years Citation Counts Rankings
Rankings
653,412
3,386
326
Ranking Based On Selection: 23
Melvyn Quan
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,501
614
0.409
* Last 6 Years Citation Counts Rankings
Rankings
746,573
3,976
394
Ranking Based On Selection: 24
Paul Tshepo Matjila
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,192
480
0.403
Molecular Parasitolgy
Veterinary Parasitology
* Last 6 Years Citation Counts Rankings
Rankings
767,248
4,088
402
Ranking Based On Selection: 25
Dietmar Holm
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
659
456
0.692
Ruminant health. Cattle production and reproduction. Veterinary education. Wildlife conservation.