Personal profile
Short presentation
Professor of Pig Health
Deputy head of Division for Production and Health
Teaching
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Danish and exotic pig diseases and zoonosis
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Pig herd health management
Research
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Respiratory infections
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Herd diagnosis of enteric infections
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Porcine zoonotic infections
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Post-weaning diarrhoea
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Gastric ulcers of sows
- Iron supplementation and hematology
- Urinary infections in sows
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Tail biting
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Acute phase proteins
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Objective health measurement
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Porcine health management
Other:
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Past president of the European College of Porcine Health Management
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Director of the Residence programme in Porcine Health Management at LIFE
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Chairman of the permanent expert committee on Classical and African Swine fever
Clinical Pig Medicine:
Research and teaching is based on the veterinary services to pig herds. Analysis and diagnosis of herd health status as well as herd management of health, immunity, production, economy, welfare, food-safety are central subjects.
Research and teaching is based on the veterinary challenges in pig herds. Analysis and diagnosis of herd health status as well as herd management of health, immunity, production, economy, welfare, food-safety are central subjects.
The research is based on methods from several scientific disciplines with main focus on population medicine. Since the conditions at the herd level are hard to reproduce experimentally, the research is most often coordinated with applied research in pig herds in cooperation with veterinary pig practitioners and the pig industry. Experimental laboratory studies are carried out in relation to e.g. disease mechanisms. Recent examples of research areas include herd diagnosis of enteric diseases post-weaning, antibiotic resistance, iron supplementation and hematology, diagnosis of gastric ulcers and urinary infections in sows, acute phase proteins, airborne transmission of infections and tail-biting. The teaching in pig diseases and health management is incorporated in a number of courses. In the veterinary curriculum an elective pig course is given in the production animal specialization, lectures on pig health and diseases and practical herd health management in pig herds. Also students in animal science are taught. Bachelor and master projects are completed by 5-10 students per year.
CV
Relevant employments
1983 - 1984 Mixed clinical practice, Funen 1984 - 1985 Researcher Danish Institute for Food and Veterinary Research (DFVF) 1985 - 1988 Ph.D. student Royal Veterinary and Agricultural University (RVAU) 1986 - 1987 Teaching assistant Vet. Epi. RVAU, Diagnostician, DFVF 1985 - 1990 Quality assurance officer, Scantox A/S, Ejby, Ll. Skensved 1988 - 1990 Research associate, DFVF 1990 - 1991 Postdoctoral fellow at Department of VMI University of Guelph, Canada 1991 - 1992 Research associate, DFVF 1993 - 1997 Senior Scientist at Department of Pathology and Epidemiology, DFVF 1997 - Professor of Swine Medicine, Dep. of Large Animal Sciences, RVAU 2007 - Group leader, Health and Production unit, Dep. of Large Animal Sciences, LIFE
Administration, memberships, awards etc.
1986 - 2004 Chairman 9 th - 17 th International Pig Veterinary Society Congresses 1987 - 1990 Secretary Danish Quality Assurance Group GLP and GCP 1989 - 1993 Secretary Danish Microbiological Society 1989 Veterinary specialist on pig health and production in Lithuania 1990 - 2000 President International working group on toxigenic P. multocida 1990 Awarded C.O. Jensen foundation prize 1991 Reviewer for Canadian Journal of Veterinary Research. 1991 Awarded by C.O. Jensen foundation for prize winning paper 1991 Awarded by Aage og Edith Dyssegårds fonds legat 1992 - Reviewer for Acta Vet. Scand. 1993 - 1999 President Danish Society for Veterinary Pathology and Hygiene 1995 Chairperson at Wold Veterinary Congress, Yokohama, Japan 1996- Reviewer Veterinary Quarterly 1997 Scientific chairman 2nd Int. Symp. Epi. & Contr. of Salmonella in Pork 1999 Organizing Com. 3 rd Int. Symp. on Epi. & Contr. of Salmonella in Pork 2000 Research Council visit to Peoples Republic China 2000 - 2008 Member of the Registration body, Danish Medical Agency 2001 Scientific Com. 4 th Int. Symp. on Epi. & Contr. of Salmonella inPork 2001 Scientific Com. 11 th Int. Conf. on Production Diseases in farm animals 2002 Veterinary specialist on pig health and production in Vietnam 2004 Veterinary specialist on pig health and production in Ghana 2004 Chairman of the Permanent scientific committee on Classical Swine Fever 2004 - 2007 President of the European College of Porcine Health Management 2006 Scientific Chairman 6th European Colloquium on Acute Phase Proteins 2006 Scientific Chairman International Pig Veterinary Society Congress
Keywords
- ???Afvejning af effektivitet, sundhed og velfærd i husdyrbruget???
- ???Antibiotika og antibiotikaresistens???
- ???Bakteriel fødevaresikkerhed???
- ???Bakteriologi???
- Herd and stable conditions
- Campylobacter
- Animal welfare
- ???Fugleinfluenza???
- Food borne disease
- ???Hygiejne og sundhed???
- ???Immunologi???
- ???Infektionssygdomme hos dyr???
- Listeria
- ???Overførsel af sygdomme fra dyr til mennesker???
- ???Prebiotika???
- ???Probiotika???
- Resistant organisms in food
- Salmonella
- Pigs
- ???Svin og genetik???
- ???Svinesygdomme???
- Zoonotic diseases
- ???Sygdomsepidemier blandt dyr???
- Disease inducing bacteria
- ???Sygdomskontrolprogrammer???
- ???Sygdomsresistens???
- ???Toksikologi???
- ???Vacciner???
- ???Virussygdomme???
Collaborations and top research areas from the last five years
Research output
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Genome-Wide Association Studies for 24 Hematological Traits in Production Pigs Before and After Weaning
Sun, J., Ibragimov, E., Morsing, M. K., Rydal, M. P., Nielsen, L. N., Cai, Z., Nielsen, J. P., Fredholm, M. & Karlskov-Mortensen, P., 2026, In: Animal Genetics. 57, 2, 11 p., e70091.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile6 Downloads (Pure) -
Robust detection in faeces and in vivo quantification of bacteriophages infecting enterotoxigenic Escherichia coli by quantitative PCR
Ács, N., Rydal, M., Pirolo, M., Nielsen, J. P., Rørby, K. K., Jeppesen, L. L. D. G., Nedergaard, H. B., Lorenzen, J., Brøndsted, L., Guardabassi, L. & Gambino, M., 2026, In: Veterinary and Animal Science. 32, 8 p., 100640.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile2 Downloads (Pure) -
Antibiotika til danske grise
Nielsen, J. P., 2025, Klinisk beslutningslære og One Health. Di Nucci, E., Ciofu, O. & Damborg, P. (eds.). København: Munksgaard , p. 269-285Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education › peer-review
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Can infectious omphalitis in piglets be clinically diagnosed during the first three days of life?
Blirup-Plum, S. A., Jensen, H. E., Hartmann, K. T., Nielsen, S. S., Pankoke, K., Hansen, M. S., Pedersen, K. S., Larsen, I., Nielsen, J. P., Olsen, J. E., Kudirkiene, E., Braunstein, T. H. & Barington, K., 2025, In: B M C Veterinary Research. 21, 12 p., 58.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile2 Citations (Scopus)54 Downloads (Pure) -
Histopathological characterisation of omphalitis in piglets
Blirup-Plum, S. A., Jensen, H. E., Nielsen, S. S., Hartmann, K. T., Hansen, M. S., Pedersen, K. S., Larsen, I., Nielsen, J. P., Olsen, J. E., Kudirkiene, E. & Barington, K., 2025, In: Acta Veterinaria Scandinavica. 67, 8 p., 42.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile11 Downloads (Pure) -
Outbreaks of post-weaning diarrhea caused by ETEC F4 are strongly associated with CHCF1 genotype in Danish pigs
Rydal, M. P., Lyderik, K. K., Andersen, A. B., Jørgensen, C. B., Damborg, P. & Nielsen, J. P., 2025, In: Scientific Reports. 15, 9 p., 41748.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile1 Citation (Scopus)7 Downloads (Pure) -
Risk-based sampling for surveillance of medicinal residues in carcasses of pigs and cattle: A scoping review
Hansen, T. V. A. & Nielsen, J. P., 2025, In: Preventive Veterinary Medicine. 243, 9 p., 106602.Research output: Contribution to journal › Review › peer-review
Open AccessFile1 Citation (Scopus)30 Downloads (Pure) -
Selection of resistant coliform bacteria in the intestine of pigs following flock versus individual treatment with neomycin against post-weaning diarrhoae or amoxicillin against umbilical infection
Kudirkiene, E., Eriksen, E. Ø., Liu, G., Christensen, A. E., Agerlin, M. V., Larsen, I., Weber, N. R., Pedersen, K. S., Nielsen, J. P. & Olsen, J. E., 2025, In: Letters in Applied Microbiology. 78, 2, 8 p., ovaf008.Research output: Contribution to journal › Journal article › Research › peer-review
Activities
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Effects of the anibiotic growth promotoer stop in Denmark
Nielsen, J. P. (Participant)
23 Sept 2005 → 29 Sept 2005Activity: Participating in an event - types › Organisation of and participation in conference
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x
Nielsen, J. P. (Participant)
12 Sept 2005 → 13 Sept 2005Activity: Participating in an event - types › Organisation of and participation in conference
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Piglet mortality
Nielsen, J. P. (Lecturer)
17 May 2005Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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x
Nielsen, J. P. (Participant)
17 May 2005 → 18 May 2005Activity: Participating in an event - types › Organisation of and participation in conference
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Management and age related diseases
Nielsen, J. P. (Lecturer)
17 May 2005Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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The use of acute phase proteins in pig production
Nielsen, J. P. (Participant)
14 Mar 2005 → 15 Mar 2005Activity: Participating in an event - types › Organisation of and participation in conference
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EBVS
Nielsen, J. P. (Member)
1 Jan 2005 → …Activity: Presentations, memberships and other activity types › Membership of committee, council, board
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ECPHM
Nielsen, J. P. (Member)
1 Jan 2005 → …Activity: Presentations, memberships and other activity types › Membership of committee, council, board