Personal profile
Short presentation
My main research interests include most aspects of infectious poultry diseases including epidemiology, pathogenesis and pathology. I have practical experience with important poultry infections such as: fowl typhoid, fowl cholera, salmonellosis, colibacillosis and Gr+ infections. Currently, I am involved in research on avian influenza. In addition, I have an interest in the development of experimental in vivo poultry models. The last ten years I have been increasingly involved in poultry disease projects in the developing world including bangladesh, Vietnam and many African countries.
I teach poultry diseases on the veterinary curriculum and participate in teaching at several post graduate courses at the Department including "Heard Health & Public Health" and Animal Science
I have acted as a resource person for Danida and other agencies on several consultencies in Africa and Asia and been co-organizer and lecturer at several workshops in these regions
Expert for EFSA (European Food Safety Authority) in 2011.
CV
Veterinarian (DVM) 1988, PhD 1996 (Veterinary mikrobiology) and Diplomate ECPVS 2013
Since 1997 Associate professor at Department for Veterinary Disease Biology
2013-2017 Head of the graduate school “Microbiology” KU, Sund
2017- Professor MSO (Poultry diseases)
Academic awards:
1999 Aage & Edith Dyssegaards Foundation
1999 The Hede Nielsen Award
Publications (summary)
Peer reviewed manuscripts 78
Book Chapters 9
Conference proceedings 98
Popular manuscripts 17
Supervision
Post. doc 3 (currently 1)
PhD 10 (currently 2)
Masters 11 (currently 1)
Editorial posts
Editor for the international journal “Avian Pathology” – 2000 to 2006
Keywords
- ???Fugleinfluenza???
Collaborations and top research areas from the last five years
Research output
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A multiple correspondence analysis of necropsy findings in non-caged laying hens that died during the production period
Butler-Lund, V. P., Nielsen, L. R., Thøfner, I. C. N. & Christensen, J. P., 2026, In: Poultry Science. 105, 6, 11 p., 106734.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile6 Downloads (Pure) -
A longitudinal study of causes of mortality in Danish commercial laying hens in non-cage housing systems
Butler-Lund, V. P., Thøfner, I. C. N., Scharling, F. S., Nielsen, L. R. & Christensen, J. P., 2025, In: Avian pathology : journal of the W.V.P.A. p. 775-791 17 p.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile2 Citations (Scopus)15 Downloads (Pure) -
A simplified vaccination program elicits an immune response comparable to a complex standard vaccination program in commercial layers under field conditions
Martiny, K., Christensen, J. P., Hjulsager, C. K. & Larsen, L. E., 2025, In: Veterinary Immunology and Immunopathology. 280, 8 p., 110882.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile10 Downloads (Pure) -
Biosecurity practices and their determining factors in commercial layer chickens in selected regions of Tanzania
Mdemu, S., Matondo, A. B., Christensen, J. P., Amasha, A. E., Ngowi, H. A., Westwood, E., Ochai, S. O., Nonga, H. E., Osbjer, K. & Mdegela, R. H., 2025, In: BMC Veterinary Research. 21, 13 p., 581.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile2 Citations (Scopus)8 Downloads (Pure) -
Dødsårsager hos danske konsumægshøner
Christensen, J. P., Thøfner, I., Nielsen, L. R. & Butler-Lund, V. P., 2025, In: Fjerkræ. 55, 6, p. 12-15Research output: Contribution to journal › Journal article › Research
Open AccessFile14 Downloads (Pure) -
Factors influencing the frequency, knowledge, attitudes and practices of antibiotic use in commercial layer chicken farms, Tanzania
Mdemu, S., Matondo, A. B., Christensen, J. P., Amasha, A. E., Ngowi, H. A., Westwood, E., Ochai, S. O., Nonga, H. E., Osbjer, K. & Mdegela, R. H., 2025, In: Frontiers in Antibiotics. 4, 12 p., 1571096.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile4 Citations (Scopus)12 Downloads (Pure) -
Lentogenic avian paramyxovirus 1 of both class I and class II are circulating in Danish wild and commercial waterfowl
Martiny, K., Liang, Y., Ryt-Hansen, P., Larsen, L. E., Christensen, J. P. & Hjulsager, C. K., 2025, In: npj Viruses. 3, 9 p., 26.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile1 Citation (Scopus)9 Downloads (Pure) -
Two Outbreaks of Pigeon Paramyxovirus 1 With High Mortality in Captive Pigeons (Columbia livia) in Denmark, 2022–2023
Martiny, K., Schlachter, A. L. D., Jensen, T. K., Lean, F. Z. X., Núñez, A., Hammer, A. S., Grund, C., Höper, D., Breum, S. Ø., Christensen, J. P., Larsen, L. E. & Hjulsager, C. K., 2025, In: Transboundary and Emerging Diseases. 2025, 17 p., 5629889.Research output: Contribution to journal › Journal article › Research › peer-review
Open AccessFile26 Downloads (Pure)
Activities
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Danske konsumægproducenters opfattelser af dødelighed
Butler-Lund, V. P. (Speaker), Thøfner, I. (Other), Nielsen, L. R. (Other) & Christensen, J. P. (Other)
7 May 2025Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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NSVP Production Animal Pathology Network
Jensen, H. E. (Participant), Leifsson, P. S. (Participant), Thøfner, I. (Participant) & Christensen, J. P. (Participant)
10 Sept 2024Activity: Participating in an event - types › Participation in workshop, seminar, course
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Causes of mortality in Danish laying hens in non-cage housing systems
Christensen, J. P. (Other)
10 Sept 2024Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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Welfare-related causes of mortality identified in a longitudinal study in Danish commercial layers
Lund, V. P. (Speaker), Thøfner, I. (Other), Scharling, F. S. (Other), Nielsen, L. R. (Other) & Christensen, J. P. (Other)
28 Jun 2023Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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Danish egg producers’ knowledge, practices, attitudes and perceptions of laying hen mortality
Lund, V. P. (Speaker), Thøfner, I. (Other), Nielsen, L. R. (Other) & Christensen, J. P. (Other)
14 Jun 2023Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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Causes of mortality in Danish layers
Lund, V. P. (Other), Thøfner, I. (Other), Scharling, F. S. (Other) & Christensen, J. P. (Speaker)
8 Nov 2022 → 10 Nov 2022Activity: Presentations, memberships and other activity types › Lecture and oral contribution
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Kurs Helse og dyrevelferd hos verpehøns og slaktekylling
Thøfner, I. (Invited speaker), Wang, C. (Participant), Pors, S. E. (Participant), Poulsen, L. L. (Participant) & Christensen, J. P. (Participant)
17 Oct 2017Activity: Participating in an event - types › Participation in workshop, seminar, course
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Produktionsdyr: Fjerkræobduktion og -sygdomme i fjerkræsektionslokale
Christensen, J. P. (Lecturer)
28 Oct 2010Activity: Presentations, memberships and other activity types › Lecture and oral contribution
Press/Media
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Videnskab.dk: Fugleinfluenza truer stadig-interview artikel
06/05/2009
1 Media contribution
Press/Media: Press / Media
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Prizes
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IVHs kommunikationspris 2021
Thøfner, I. (Recipient) & Christensen, J. P. (Recipient), 2021
Prize: Prizes, scholarships, distinctions