Jørgen Fris Jensen was born on 26 September 1927 in Aarhus, Denmark. After a practical education in farming and studies at the Royal Veterinary and Agricultural University in Copenhagen he became Master of Animal Science in 1954 and PhD in 1959. He then worked in the Department of Research in Poultry and Rabbits at the National Institute of Animal Science.
In 1972 Fris Jensen was appointed Professor at the Royal Veterinary and Agricultural University, the professorship covering the disciplines of poultry breeding and nutrition. At the same time he also became Head of the Department in which he had previously worked. Arising from structural changes in the National Institute of Animal Science, Professor Jensen retired from the post of Head of the Department of Research in Poultry and Rabbits in 1993, but has continued as Professor at the Royal Veterinary and Agricultural University in Copenhagen.
J. Fris Jensen has been involved in the work as a number of councils and committees. Since 1976 he has been Chairman of the National council for Feedstuffs and, since 1989, of the National Committee on Feed Additives. For a great many years he has also been a member of the EEC Standing Committee on Agricultural Research and, since 1991, a member of the Danish Animal Ethics Council.
Poultry production has always interested J. Fris Jensen, both from a practical point of view and as a subject for research, and this has made him a valuable link between poultry science and commercial production. These interests also brought him into the WPSA at an early stage on for many years he has been much occupied with the possibilities that this organization provides. Within the framework of the European Federation of WPSA Branches he was one of the main driving forces behind the introduction of symposia and has always stressed the importance of the various tasks undertaken by the Working Groups. He has been a member of the Poultry Meat Quality working group since 1974 and was its chairman from 1976 to 1986. During this time he helped to establish some important procedures and guidelines for the scientific symposia programmes, and these continue to be used by this and other Working Groups. As a Council Member of the European Federation of WPSA Branches and a member of the Executive Committee of the WPSA itself, he has been involved in the management of the whole organization. In 1986 he was elected President of the WPSA European Federation, continuing in this post for two four-year terms until 1994.
J. Fris Jensen has been a prolific author, publishing many scientific articles on poultry production. His work is characterized by stringent accuracy and great practicality, often making it immediately usable by those directly involved in poultry production. He was editor of "Methods of Dissection of Broiler Carcasses and Description of Parts" published by Working Group 5 and "Terms used for Parts of Poultry in Different Languages" (WPSJ 1993; 39: 74-73. These publications continue to be valuable poultry production tools and fine examples of the results produced by an active Working Group.
In 1991, and in recognition of his work in the area of poultry meat quality, J. Fris Jensen received an Honorary Doctorate from Panonia Agricultural University in Hungary. He has also been honoured by the award of the Order of Knight of The Dannebrog, 1st Degree.